DeFi Saver/imToken DAI Reduction - Revision history

Azoundria at 17:55, 2 May 2023

2023-05-02T17:55:51Z

← Older revision		Revision as of 11:55, 2 May 2023
Line 1:		Line 1:
	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}}		{{Imported Case Study 2\|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}}
	{{Unattributed ~~Citations~~}}		{{Unattributed Sources}}

	[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.		[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

	This is a global/international case not involving a specific country.		This is a global/international case not involving a specific country.<ref name="slowmisthacked-678" /><ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" />
	<ref name="slowmisthacked-678" /><ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" />

	== About DeFi Saver ==		== About DeFi Saver ==
Line 51:		Line 50:
	!Description		!Description
	\|-		\|-
	\|October 8th, 2020 ~~12:00:00 AM~~		\|October 8th, 2020
	\|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 59:		Line 58:
	\|		\|
	\|}		\|}

			== Technical Details ==
			This section includes specific detailed technical analysis of any security breaches which happened. What specific software vulnerabilities contributed to the problem and how were they exploited?

	== Total Amount Lost ==		== Total Amount Lost ==
Line 78:		Line 80:
	== 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 ==
			No user funds were lost.
			== 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 ~~Policies ==~~		{{Prevention:Regulators:End}}
	~~No user funds were lost.~~

	== References ==		== References ==
	<references><ref name="slowmisthacked-678">[https://hacked.slowmist.io/en/?c=ETH%20DApp SlowMist Hacked - SlowMist Zone] (May 17, 2021)</ref>		<references><ref name="slowmisthacked-678">[https://hacked.slowmist.io/en/?c=ETH%20DApp SlowMist Hacked - SlowMist Zone] (May 18, 2021)</ref>

	<ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 24, 2021)</ref>		<ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 25, 2021)</ref>

	<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24, 2021)</ref>		<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 25, 2021)</ref>

	<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24, 2021)</ref>		<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24, 2021)</ref>		<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24, 2021)</ref>		<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 25, 2021)</ref>

	<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24, 2021)</ref>		<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24, 2021)</ref></references>		<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 25, 2021)</ref></references>

Azoundria at 17:24, 17 February 2023

2023-02-17T17:24:39Z

← Older revision		Revision as of 11:24, 17 February 2023
Line 1:		Line 1:
	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}}		{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}}
			{{Unattributed Citations}}

	[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.		[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

	This is a global/international case not involving a specific country.		This is a global/international case not involving a specific country.
			<ref name="slowmisthacked-678" /><ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" />

	== About DeFi Saver ==		== About DeFi Saver ==
Line 29:		Line 31:

	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 51:		Line 52:
	\|-		\|-
	\|October 8th, 2020 12:00:00 AM		\|October 8th, 2020 12:00:00 AM
	\|~~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 64:		Line 61:

	== Total Amount Lost ==		== Total Amount Lost ==
	The total amount lost ~~is unknown~~.		The total amount lost has been estimated at $310,000 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 75:		Line 72:

	== 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 86:		Line 83:

	== References ==		== References ==
	[https://hacked.slowmist.io/en/?c=ETH%20DApp SlowMist Hacked - SlowMist Zone] (May 17)		<references><ref name="slowmisthacked-678">[https://hacked.slowmist.io/en/?c=ETH%20DApp SlowMist Hacked - SlowMist Zone] (May 17, 2021)</ref>

	[https://defisaver.com/ DeFi Saver] (Jul 24)		<ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 24, 2021)</ref>

	[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24)		<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24, 2021)</ref>

	[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24)		<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24, 2021)</ref>

	[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24)		<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24, 2021)</ref></references>

Azoundria: Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}} DeFi SaverThere was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack. This is a global/international case not involving a specific country. == About DeFi Saver == "DeFi Saver is a one-stop dashboard for creating, managing and tracking your De..."

2023-01-25T18:55:49Z

Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/defisaverimtokendaireduction.php}} thumb|DeFi SaverThere was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack. This is a global/international case not involving a specific country. == About DeFi Saver == "DeFi Saver is a one-stop dashboard for creating, managing and tracking your De..."

New page

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

[[File:Defisaver.jpg|thumb|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

This is a global/international case not involving a specific country.

== About DeFi Saver ==
"DeFi Saver is a one-stop dashboard for creating, managing and tracking your DeFi positions." "Automation can manage your leverage and protect your position from liquidation based on your input, non-custodially and trustlessly."

"The decentralized wallet imToken tweeted that users reported that 310,000 DAI had been reduced, which conflicted with DeFi Saver Exchange. imToken recommends that the automated management system of collateralized bond warehouses (CDP) imi stated that its security team is investigating the incident and trying to troubleshoot all user wallets that hit and issue warnings."

"The complete attack process: (1) The attacker calls the swapTokenToToken function to pass in _exchangeAddress as the DAI contract address, selects _exchangeType as 4, and puts the attack payload in _callData to pass in. (2) At this time, the logic of _exchangeType == 4 will be followed, which will call the takeOrder function and pass in _callData. (3) The takeOrder function will make a specific call to the incoming _callData, so if the user who holds DAI has authorized the SaverExchange contract in the DAI contract , he can use the incoming _callData to call the transferFrom function of the DAI contract to transfer the user’s DAI Export directly, and it can be constructed in _callData. (4) Through the constructed _callData and the previous user authorized the SaverExchange contract with DAI, the SaverExchange contract can directly transfer the DAI in the user account to the address specified by the attacker by calling the transferFrom function of the DAI contract."

"DeFiSaver responded that this part of the funds is safe and is contacting users. DeFiSaver admitted that this was related to the foreign exchange benefits reported in June."

This is a global/international case not involving a specific country.

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 - DeFi Saver/imToken DAI Reduction
!Date
!Event
!Description
|-
|October 8th, 2020 12:00:00 AM
|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 ==
No user funds were lost.

== References ==
[https://hacked.slowmist.io/en/?c=ETH%20DApp SlowMist Hacked - SlowMist Zone] (May 17)

[https://defisaver.com/ DeFi Saver] (Jul 24)

[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24)

[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24)

[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24)

[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24)

[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24)

[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24)