Blockchain.info Roommate Fund Theft - Revision history

Azoundria: COMPLETE 30 minutes. Created and expanded an initial section related to the reality of the situation. Reviewed information from the blockchain transaction and expanded source information and related sections of the article. Added information about the comment response to the other user who lost 301 BTC. Consolidated some of the prevention section information. Adding date/time for the wiki article itself. Prepared a promotional post for the wiki article.

2024-09-18T01:20:42Z

COMPLETE 30 minutes. Created and expanded an initial section related to the reality of the situation. Reviewed information from the blockchain transaction and expanded source information and related sections of the article. Added information about the comment response to the other user who lost 301 BTC. Consolidated some of the prevention section information. Adding date/time for the wiki article itself. Prepared a promotional post for the wiki article.

← Older revision		Revision as of 19:20, 17 September 2024
Line 3:		Line 3:
	[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info Logo/Homepage]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.		[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info Logo/Homepage]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.

	The country for this case study is not yet known.<ref name="reddit-7471" /><ref name="reddit-7708~~" /><ref name="blockchaindotinfo-7709" /><ref name="coinmarketcap-623" /><ref name="blockchaindotcom-4728" /><ref name="bitdegree-4729~~" />		The country for this case study is not yet known.<ref name="reddit-7471" /><ref name="reddit-7708" />

	== About Blockchain.info ==		== About Blockchain.info ==
	"The world’s most popular crypto wallet. Over 80 million wallets created to buy, sell, and earn crypto." "As they say, not your keys, not your crypto. Blockchain.com Private Key Wallets are the most widely-used wallets for self-custody of your crypto. We make it easy for people who are ready to control their private keys to hold them with a Secret Private Key Recovery Phrase." "When it comes to ensuring that your crypto is secure, we think about every last detail so you don’t have to."		"The world’s most popular crypto wallet. Over 80 million wallets created to buy, sell, and earn crypto." "As they say, not your keys, not your crypto. Blockchain.com Private Key Wallets are the most widely-used wallets for self-custody of your crypto. We make it easy for people who are ready to control their private keys to hold them with a Secret Private Key Recovery Phrase." "When it comes to ensuring that your crypto is secure, we think about every last detail so you don’t have to."

			Third Party Review:<ref name="bitdegree-4729" />

			Homepage:<ref name="blockchaindotcom-4728" />

			== About voluntaryistimtch ==
			voluntaryistmitch is a Reddit user<ref>[https://old.reddit.com/user/voluntaryistmitch voluntaryistmitch Profile - Reddit] (Accessed Sep 17, 2024)</ref>.

	== The Reality ==		== The Reality ==
	~~This sections~~ is ~~included if~~ a ~~case involved deception or information that was unknown~~ at ~~the time~~. ~~Examples include:~~		Using a web-based wallet leaves the user vulnerable to many additional attack vectors which don't exist in offline hardware-based solutions or even in software-based solutions. Being on a website, the user is subject to the potential for the source code to be modified live, while a software wallet would require them to at least download an updated version. Software offers the ability to verify the new versions before upgrading, while a web-based wallet would fundamentally be running within a browser, that doesn't run any additional checks on the new code. In addition, using a web-based wallet requires information to be sent to/from a third party during the normal process of using the wallet, which creates a large opportunity for abuse of the user's information in order to take the funds.

	* When the ~~service was actually started (if different than~~ the ~~"official story")~~.
	* Who actually ran a ~~service and their own personal history.~~
	* How the ~~service was structured behind~~ the ~~scenes. (For example~~, ~~there was no "trading bot".)~~
	* Details of ~~what audits reported and how vulnerabilities were missed during auditing~~.

	== What Happened ==		== What Happened ==
Line 34:		Line 36:
	\|August 1st, 2013 11:21:22 AM MDT		\|August 1st, 2013 11:21:22 AM MDT
	\|Blockchain Transaction		\|Blockchain Transaction
	\|The transaction on the blockchain where ~~the~~ 40 BTC of funds are taken from the wallet.		\|The transaction on the blockchain where 40.416 BTC of funds are taken from the wallet of the victim and transferred to the attacker<ref name="blockchaindotinfo-7709" />.
	\|-		\|-
	\|		\|August 7th, 2013 1:52:00 AM MDT
	\|		\|Reddit Thread Started
	\|		\|voluntaryismitch starts a Reddit thread about their loss with details, attempting to understand what may have happened that allowed the loss to occur<ref name="reddit-7708" />.
			\|-
			\|November 4th, 2013 9:26:33 PM MST
			\|Mention In Reddit Thread Comment
			\|voluntaryistmitch posts in response to another user who reported losing 301 BTC to explain their story<ref name="reddit-7471" />. When asked whether or not they had confronted their roommates yet, they neglected to answer the question<ref name="reddit-7471" />.
	\|}		\|}

Line 55:		Line 61:

	"Just another piece of data. I ran a full Symantec scan and the only thing it found was a tracking cookie from quantserve.com. I'm assuming that is nothing, but I just wanted to mention it."		"Just another piece of data. I ran a full Symantec scan and the only thing it found was a tracking cookie from quantserve.com. I'm assuming that is nothing, but I just wanted to mention it."

			Malicious Transaction: <ref name="blockchaindotinfo-7709" />

			Attacker Wallet Address: 1GvmpUY1RdR5zf7jDZnpjfuBnoCz3S2xSS

	== Total Amount Lost ==		== Total Amount Lost ==
	The total transferred was 40.41600000 BTC. The total amount lost has been estimated at $4,000 USD.		The total transferred was 40.41600000 BTC. The total amount lost has been estimated at $4,000 USD<ref name="coinmarketcap-623" />.

	== Immediate Reactions ==		== Immediate Reactions ==
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	== Ultimate Outcome ==		== Ultimate Outcome ==



Line 72:		Line 83:

	"I'd appreciate some help to understand what happened, and if possible, how I can get the BTC back. I'm not a tech person, so it's been a struggle to learn what I have about Bitcoin..."		"I'd appreciate some help to understand what happened, and if possible, how I can get the BTC back. I'm not a tech person, so it's been a struggle to learn what I have about Bitcoin..."



	"I followed the transactions and it looks interesting. The address it was sent to then sent that balance to two other addresses. If you track those addresses down, they also keep doing a forked balance split by sending to two other addresses. I am not very good at digging deep into this stuff though, so maybe someone else has an idea of what is happening."		"I followed the transactions and it looks interesting. The address it was sent to then sent that balance to two other addresses. If you track those addresses down, they also keep doing a forked balance split by sending to two other addresses. I am not very good at digging deep into this stuff though, so maybe someone else has an idea of what is happening."

			"I do not have 2-factor for Gmail, but I'll do that now and change all my passwords to something much more robust."

	"I ~~do not have 2-factor~~ for ~~Gmail~~, but I'~~ll do that now and change all my passwords to something much more robust~~."		=== Post On Another Loss Thread ===
			voluntaryistmitch posted a comment on another thread regarding another user who lost a total of 301 bitcoin<ref name="reddit-7471" />.<blockquote>
			I'm sorry for your loss. Mine hurt, but I'm sure nowhere near as bad as yours.</blockquote>

	== Total Amount Recovered ==		== Total Amount Recovered ==
	There do not appear to have been any funds recovered in this case.		There do not appear to have been any funds recovered in this case.

	~~What funds were recovered? What funds were reimbursed for those affected users?~~

	== Ongoing Developments ==		== Ongoing Developments ==
	What parts of this case are still remaining to be concluded?		What parts of this case are still remaining to be concluded?
	== ~~General~~ Prevention Policies ==		== Individual Prevention Policies ==
	The blockchain.info wallet is web-based, which makes it a form of hot wallet. Hot wallets are vulnerable to breach, and should not be used to store large sums of money. Always store the vast majority of funds offline in a cold storage medium which is not connected to the internet.		The blockchain.info wallet is web-based, which makes it a form of hot wallet. Hot wallets are vulnerable to breach, and should not be used to store large sums of money. Always store the vast majority of funds offline in a cold storage medium which is not connected to the internet.

	In general, it is not good practice to let anyone else know how many bitcoin you have, and to have a decoy wallet with less bitcoin more easily accessible.		In general, it is not good practice to let anyone else know how many bitcoin you have, and to have a decoy wallet with less bitcoin more easily accessible.
	~~== Individual Prevention Policies ==~~
	{{Prevention:Individuals:Placeholder}}		{{Prevention:Individuals:Placeholder}}

Line 107:		Line 119:
	== References ==		== References ==
	<references>		<references>
	<ref name="reddit-7471">[https://~~www~~.reddit.com/r/Bitcoin/comments/1pxcif/~~comment~~/cd71v9c/ voluntaryistmitch - "I had 40 BTC stolen despite having 2FA turned on at Blockchain" - Reddit] (Accessed Mar 19, 2022)</ref>		<ref name="reddit-7471">[https://old.reddit.com/r/Bitcoin/comments/1pxcif/i_just_lost_301btc_70000_on_blockchaininfo_use/cd71v9c/ voluntaryistmitch - "I had 40 BTC stolen despite having 2FA turned on at Blockchain" - Reddit] (Accessed Mar 19, 2022)</ref>
	<ref name="reddit-7708">[https://www.reddit.com/r/Bitcoin/comments/1jvd57/40_btc_gone_please_help_me_understand_what/ 40 BTC Gone - Please Help Me Understand What Happened - Bitcoin Reddit] (Accessed May 16, 2022)</ref>		<ref name="reddit-7708">[https://www.reddit.com/r/Bitcoin/comments/1jvd57/40_btc_gone_please_help_me_understand_what/ 40 BTC Gone - Please Help Me Understand What Happened - Bitcoin Reddit] (Accessed May 16, 2022)</ref>
	<ref name="blockchaindotinfo-7709">[https://blockchain.info/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction ~~3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434~~ - Blockchain Explorer] (Accessed May 17, 2022)</ref>		<ref name="blockchaindotinfo-7709">[https://blockchain.info/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction Transferring 40.416 BTC from The Victim to the Attacker - Blockchain Explorer] (Accessed May 17, 2022)</ref>
	<ref name="blockchaindotcom-7710">[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18, 2022)</ref>		<ref name="blockchaindotcom-7710">[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18, 2022)</ref>
	<ref name="coinmarketcap-623">[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin Historic Pricing Data - CoinMarketCap] (Accessed May 16, 2021)</ref>		<ref name="coinmarketcap-623">[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin Historic Pricing Data - CoinMarketCap] (Accessed May 16, 2021)</ref>

Azoundria at 21:41, 13 September 2024

2024-09-13T21:41:08Z

Show changes

Azoundria at 23:53, 12 April 2023

2023-04-12T23:53:28Z

← Older revision		Revision as of 17:53, 12 April 2023
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	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}}		{{Imported Case Study 2\|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}}
	{{Unattributed ~~Citations~~}}		{{Unattributed Sources}}

	[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.		[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.

	The country for this case study is not yet known.		The country for this case study is not yet known.<ref name="reddit-7471" /><ref name="reddit-7708" /><ref name="blockchaindotinfo-7709" /><ref name="blockchaindotcom-7710" /><ref name="coinmarketcap-623" /><ref name="blockchaindotcom-4728" /><ref name="bitdegree-4729" />
	<ref name="reddit-7471" /><ref name="reddit-7708" /><ref name="blockchaindotinfo-7709" /><ref name="blockchaindotcom-7710" /><ref name="coinmarketcap-623" /><ref name="blockchaindotcom-4728" /><ref name="bitdegree-4729" />

	== About Blockchain.info ==		== About Blockchain.info ==
Line 73:		Line 72:
	!Description		!Description
	\|-		\|-
	\|August 1st, 2013 11:21:00 PM		\|August 1st, 2013 11:21:00 PM MDT
	\|Main Event		\|Main Event
	\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.		\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.
Line 100:		Line 99:
	== Ongoing Developments ==		== Ongoing Developments ==
	What parts of this case are still remaining to be concluded?		What parts of this case are still remaining to be concluded?
			== General Prevention Policies ==
	== Prevention Policies ==
	The blockchain.info wallet is web-based, which makes it a form of hot wallet. Hot wallets are vulnerable to breach, and should not be used to store large sums of money. Always store the vast majority of funds offline in a cold storage medium which is not connected to the internet.		The blockchain.info wallet is web-based, which makes it a form of hot wallet. Hot wallets are vulnerable to breach, and should not be used to store large sums of money. Always store the vast majority of funds offline in a cold storage medium which is not connected to the internet.

	In general, it is not good practice to let anyone else know how many bitcoin you have, and to have a decoy wallet with less bitcoin more easily accessible.		In general, it is not good practice to let anyone else know how many bitcoin you have, and to have a decoy wallet with less bitcoin more easily accessible.
			== Individual Prevention Policies ==
			{{Prevention:Individuals:Placeholder}}

			{{Prevention:Individuals:End}}

			== Platform Prevention Policies ==
			{{Prevention:Platforms:Placeholder}}

			{{Prevention:Platforms:End}}

			== Regulatory Prevention Policies ==
			{{Prevention:Regulators:Placeholder}}

			{{Prevention:Regulators:End}}

	== References ==		== References ==
Line 115:		Line 127:
	<ref name="blockchaindotcom-7710">[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18, 2022)</ref>		<ref name="blockchaindotcom-7710">[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18, 2022)</ref>

	<ref name="coinmarketcap-623">[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin price today, BTC live marketcap, chart, and info \| CoinMarketCap] (May 15, 2021)</ref>		<ref name="coinmarketcap-623">[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin price today, BTC live marketcap, chart, and info \| CoinMarketCap] (May 16, 2021)</ref>

	<ref name="blockchaindotcom-4728">[https://www.blockchain.com/wallet/ Blockchain.com Wallet - Store and Invest in Crypto] (Dec 23, 2021)</ref>		<ref name="blockchaindotcom-4728">[https://www.blockchain.com/wallet/ Blockchain.com Wallet - Store and Invest in Crypto] (Dec 24, 2021)</ref>

	<ref name="bitdegree-4729">[https://www.bitdegree.org/crypto/blockchain-wallet-review Blockchain Wallet Review: Learn How To Buy Bitcoin On Blockchain] (Dec 23, 2021)</ref></references>		<ref name="bitdegree-4729">[https://www.bitdegree.org/crypto/blockchain-wallet-review Blockchain Wallet Review: Learn How To Buy Bitcoin On Blockchain] (Dec 24, 2021)</ref></references>

Azoundria at 20:54, 15 February 2023

2023-02-15T20:54:52Z

← Older revision		Revision as of 14:54, 15 February 2023
Line 1:		Line 1:
	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}}		{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}}
			{{Unattributed Citations}}

	[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.		[[File:Blockchaininfo.jpg\|thumb\|Blockchain.info]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.

	The country for this case study is not yet known.		The country for this case study is not yet known.
			<ref name="reddit-7471" /><ref name="reddit-7708" /><ref name="blockchaindotinfo-7709" /><ref name="blockchaindotcom-7710" /><ref name="coinmarketcap-623" /><ref name="blockchaindotcom-4728" /><ref name="bitdegree-4729" />

	== About Blockchain.info ==		== About Blockchain.info ==
Line 51:		Line 53:

	Don't Include:		Don't Include:

	* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.		* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.
	* Anything that wasn't reasonably knowable at the time of the event.		* Anything that wasn't reasonably knowable at the time of the event.
Line 73:		Line 74:
	\|-		\|-
	\|August 1st, 2013 11:21:00 PM		\|August 1st, 2013 11:21:00 PM
	\|~~First~~ Event		\|Main Event
	\|~~This is an expanded~~ description of what happened and the impact. If multiple lines are necessary, add them here.		\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.
	\|-
	\|
	\|
	\|
	\|-		\|-
	\|		\|
Line 86:		Line 83:

	== Total Amount Lost ==		== Total Amount Lost ==
	The total amount lost ~~is unknown~~.		The total amount lost has been estimated at $4,000 USD.

	How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?		How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?
Line 97:		Line 94:

	== Total Amount Recovered ==		== Total Amount Recovered ==
	~~It is unknown how much was~~ recovered.		There do not appear to have been any funds recovered in this case.

	What funds were recovered? What funds were reimbursed for those affected users?		What funds were recovered? What funds were reimbursed for those affected users?
Line 110:		Line 107:

	== References ==		== References ==
	[https://www.reddit.com/r/Bitcoin/comments/1pxcif/i_just_lost_301btc_70000_on_blockchaininfo_use/ I just lost 301BTC ($70,000+) on blockchain.info. USE 2FA / Cold wallets! : Bitcoin] (Mar 19)		<references><ref name="reddit-7471">[https://www.reddit.com/r/Bitcoin/comments/1pxcif/i_just_lost_301btc_70000_on_blockchaininfo_use/ I just lost 301BTC ($70,000+) on blockchain.info. USE 2FA / Cold wallets! : Bitcoin] (Mar 19, 2022)</ref>

	[https://www.reddit.com/r/Bitcoin/comments/1jvd57/40_btc_gone_please_help_me_understand_what/ 40 BTC Gone - Please Help Me Understand What Happened : Bitcoin] (May 16)		<ref name="reddit-7708">[https://www.reddit.com/r/Bitcoin/comments/1jvd57/40_btc_gone_please_help_me_understand_what/ 40 BTC Gone - Please Help Me Understand What Happened : Bitcoin] (May 16, 2022)</ref>

	[https://blockchain.info/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 17)		<ref name="blockchaindotinfo-7709">[https://blockchain.info/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 17, 2022)</ref>

	[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18)		<ref name="blockchaindotcom-7710">[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 \| Blockchain Explorer] (May 18, 2022)</ref>

	[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin price today, BTC live marketcap, chart, and info \| CoinMarketCap] (May 15)		<ref name="coinmarketcap-623">[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin price today, BTC live marketcap, chart, and info \| CoinMarketCap] (May 15, 2021)</ref>

	[https://www.blockchain.com/wallet/ Blockchain.com Wallet - Store and Invest in Crypto] (Dec 23)		<ref name="blockchaindotcom-4728">[https://www.blockchain.com/wallet/ Blockchain.com Wallet - Store and Invest in Crypto] (Dec 23, 2021)</ref>

	[https://www.bitdegree.org/crypto/blockchain-wallet-review Blockchain Wallet Review: Learn How To Buy Bitcoin On Blockchain] (Dec 23)		<ref name="bitdegree-4729">[https://www.bitdegree.org/crypto/blockchain-wallet-review Blockchain Wallet Review: Learn How To Buy Bitcoin On Blockchain] (Dec 23, 2021)</ref></references>

Azoundria: Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}} Blockchain.infoA blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of..."

2023-01-21T19:57:32Z

Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}} thumb|Blockchain.infoA blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of..."

New page

{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/blockchaininforoommatefundtheft.php}}

[[File:Blockchaininfo.jpg|thumb|Blockchain.info]]A blockchain.info user reports that their wallet was emptied, and the transaction referenced has 40.416 BTC. The user sent password information to their email addresses, however they found no login history on the email. They received a transfer code to their phone, which they leave unlocked. They report some of their browser history is deleted. The user was drugged from surgery at the time. The prevailing theory is that one of their roommates took the funds. Another possibility is that they were another victim of the failures in the Blockchain.info random number generator, with the attack sending funds to a second address.

The country for this case study is not yet known.

== About Blockchain.info ==
"The world’s most popular crypto wallet. Over 80 million wallets created to buy, sell, and earn crypto." "As they say, not your keys, not your crypto. Blockchain.com Private Key Wallets are the most widely-used wallets for self-custody of your crypto. We make it easy for people who are ready to control their private keys to hold them with a Secret Private Key Recovery Phrase." "When it comes to ensuring that your crypto is secure, we think about every last detail so you don’t have to."

"I import the private key into blockchain.info." "I had previously used a paper wallet, but transferred my money back to Blockchain to enable easier transactions. I was using 2 factor authentication with an SMS code being sent to my phone to be able to access my wallet. I did not notice this at the time, but now that I checked, a wallet authentication code was was sent to my phone at 12:17am Aug 2nd. I do not recall ever seeing this until now." "[H]e was texted a confirmation code to enable the transaction, not a notice saying it had happened."

"I was once sent an email from Blockchain with a wallet backup saying the following, but that is all I'm aware of - "Attached to this email is an AES encrypted wallet backup which contains everything you need to restore your bitcoin balance. You can use it to restore the wallet at anytime at My Wallet or using the 3rd party MultiBit Desktop client."

"The password was not very strong at all..." "My password could probably be stronger, but it is one of the stronger ones I use. 5 letters and 6 numbers. I don't believe I use it anywhere else." "And as I mentioned earlier in this post, I stupidly sent myself and email with my username and password to my wallet when I first opened one at Blockchain." "It looks like I used the same one for Coinbase as well, but just those 2 locations."

"I don't have my phone locked."

"On July 17th, somebody signed in by iPhone with a different IP address than what mine appears to be (an the site says it was a Verizon IP, though that is my provider). It is close to the city where I live, but probably 30 minutes away."

"On July 30th, I was logged in from a Starbucks on the hospital's WiFi which I can see on the map. Besides that, the location on the map appears to be where my apartment is and have the same IP address (the first 11 characters are the same, but then they change - I don't understand what that means)."

"Just another piece of data. I ran a full Symantec scan and the only thing it found was a tracking cookie from quantserve.com. I'm assuming that is nothing, but I just wanted to mention it."

"Today when I logged onto Blockchain.info, I noticed the 40+ BTC I had in my wallet were gone and had been sent to this address 1GvmpUY1RdR5zf7jDZnpjfuBnoCz3S2xSS at 12:20am Aug 2nd."

"I checked my laptop browser history, and I do not see any activity during the time of the transfer. However, it looks like there is a gap in my history where I or somebody else cleared the history on my computer. 8/1 12pm to 8/2 11am is missing. The transfer happened at 12:20am on 8/2."

"I did not notice this at the time, but now that I checked, a wallet authentication code was was sent to my phone at 12:17am Aug 2nd. I do not recall ever seeing this until now." "The time between the two is 3 minutes. 12:17am the code was sent. 12:20am, the was the transaction that emptied the wallet." "I honestly do not remember seeing this text until right now (5 days later). I was quite out of it that day. I had a surgery for which I was put under, 10 hours earlier in the day and was basically a zombie. I do not recall seeing the message at the time, either when it was sent, or after the fact, but it is possible that I did see the message that day but didn't think much of it (again, I was very out of it)."

"I don't believe anybody could have borrowed my phone at that time. I was at home for a few days in my apartment because of a surgery. I may have turned on my wifi once (though I don't think so) if that could do something." "We've eliminated people without physical access to your phone and computer because your email wasn't accessed by someone else."

"I'd appreciate some help to understand what happened, and if possible, how I can get the BTC back. I'm not a tech person, so it's been a struggle to learn what I have about Bitcoin..."

"I followed the transactions and it looks interesting. The address it was sent to then sent that balance to two other addresses. If you track those addresses down, they also keep doing a forked balance split by sending to two other addresses. I am not very good at digging deep into this stuff though, so maybe someone else has an idea of what is happening."

"I do not have 2-factor for Gmail, but I'll do that now and change all my passwords to something much more robust."

The country for this case study is not yet known.

The background of the exchange platform, service, or individuals involved, as it would have been seen or understood at the time of the events.

Include:

* Known history of when and how the service was started.
* What problems does the company or service claim to solve?
* What marketing materials were used by the firm or business?
* Audits performed, and excerpts that may have been included.
* Business registration documents shown (fake or legitimate).
* How were people recruited to participate?
* Public warnings and announcements prior to the event.

Don't Include:

* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.
* Anything that wasn't reasonably knowable at the time of the event.
There could be more than one section here. If the same platform is involved with multiple incidents, then it can be linked to a main article page.

== The Reality ==
This sections is included if a case involved deception or information that was unknown at the time. Examples include:

* When the service was actually started (if different than the "official story").
* Who actually ran a service and their own personal history.
* How the service was structured behind the scenes. (For example, there was no "trading bot".)
* Details of what audits reported and how vulnerabilities were missed during auditing.

== What Happened ==
The specific events of the loss and how it came about. What actually happened to cause the loss and some of the events leading up to it.
{| class="wikitable"
|+Key Event Timeline - Blockchain.info Roommate Fund Theft
!Date
!Event
!Description
|-
|August 1st, 2013 11:21:00 PM
|First Event
|This is an expanded description of what happened and the impact. If multiple lines are necessary, add them here.
|-
|
|
|
|-
|
|
|
|}

== Total Amount Lost ==
The total amount lost is unknown.

How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?

== Immediate Reactions ==
How did the various parties involved (firm, platform, management, and/or affected individual(s)) deal with the events? Were services shut down? Were announcements made? Were groups formed?

== Ultimate Outcome ==
What was the end result? Was any investigation done? Were any individuals prosecuted? Was there a lawsuit? Was any tracing done?

== Total Amount Recovered ==
It is unknown how much was recovered.

What funds were recovered? What funds were reimbursed for those affected users?

== Ongoing Developments ==
What parts of this case are still remaining to be concluded?

== Prevention Policies ==
The blockchain.info wallet is web-based, which makes it a form of hot wallet. Hot wallets are vulnerable to breach, and should not be used to store large sums of money. Always store the vast majority of funds offline in a cold storage medium which is not connected to the internet.

In general, it is not good practice to let anyone else know how many bitcoin you have, and to have a decoy wallet with less bitcoin more easily accessible.

== References ==
[https://www.reddit.com/r/Bitcoin/comments/1pxcif/i_just_lost_301btc_70000_on_blockchaininfo_use/ I just lost 301BTC ($70,000+) on blockchain.info. USE 2FA / Cold wallets! : Bitcoin] (Mar 19)

[https://www.reddit.com/r/Bitcoin/comments/1jvd57/40_btc_gone_please_help_me_understand_what/ 40 BTC Gone - Please Help Me Understand What Happened : Bitcoin] (May 16)

[https://blockchain.info/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 | Blockchain Explorer] (May 17)

[https://www.blockchain.com/btc/tx/3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 Transaction: 3ea2a7343d5623058ac7cc403d82e4fc9a351ef0e8818f1fe0d1b3351e6ad434 | Blockchain Explorer] (May 18)

[https://coinmarketcap.com/currencies/bitcoin/historical-data/ Bitcoin price today, BTC live marketcap, chart, and info | CoinMarketCap] (May 15)

[https://www.blockchain.com/wallet/ Blockchain.com Wallet - Store and Invest in Crypto] (Dec 23)

[https://www.bitdegree.org/crypto/blockchain-wallet-review Blockchain Wallet Review: Learn How To Buy Bitcoin On Blockchain] (Dec 23)