Log in

🎄 Cryptonary Christmas Sale! 50% OFF. Save $500 Now Only ⏰ : 0d 23h 43m 28s

News

White Hat patches $350 million SushiSwap vulnerability

Updated: Jul 30, 2024
Published: Aug 18, 2021
0
Share:

A security researcher discovered a vulnerability that put over $350 million worth of Ethereum at risk on SushiSwap and made sure it was patched.

Post Feature Image

The researcher decided to investigate SushiSwap's code

In a blog post, samczsun, a security researcher at venture capital firm Paradigm, explained that he happened to come across a discussion about a capital raise on the platform. As a result, he decided to inspect the project's code on Etherscan.

In the process, he came across a vulnerability in the MISO Dutch Auction Contract, where some functions had no access control. Upon further investigation, the researcher discovered a vulnerability that, if exploited, could result in all crypto assets in the token auction contract being drained by a malicious actor. Samczsun tested the vulnerability with a successful exploit before turning to his colleagues Georgios Konstantopoulos and Dan Robinson to take a look and review the findings.

Fixing the bug was more complicated than expected

Samzcun and the SushiSwap team tried to fix the vulnerability by buying the allocated funds with a flash loan. This would have ended the auction and allowed them to repay the flash loan with funds from the auction. The plan was complicated by the fact that there was a concurrent batch auction that did not work the same way and was not vulnerable to the exploit. At some point, it was decided that the BitDAO team running the token sale would manually end the auction by buying the remaining allocation and immediately completing the process and retrieving the funds. Samzcun noted that it only took five hours to recover the funds.

Today's announcement comes just days after the attack on Poly Network, another high-profile DeFi platform. In this hack, the vulnerability was not found in time, so a hacker managed to exploit the protocol and steal $600 million from it.

Continue reading by joining Cryptonary Pro

Save 50%

$997 $497/year

Get everything you need to actively manage your portfolio and stay ahead. Ideal for investors seeking regular guidance and access to tools that help make informed decisions.

VisaCardImageMsCardImageCoinbaseCardImageSolanaCardImage

For your security, all orders are processed on a secured server.

As a Cryptonary Pro subscriber, you also get:

  • 3X Value Guarantee - If cumulative documented upside does not reach 300% during your 12-month membership, you can request a full refund.

  • 24/7 access to experts with 50+ years’ experience

  • All of our top token picks for 2025

  • On hand technical analysis on any token of your choice

  • Weekly livestreams & ask us anything with the team

  • Daily insights on Macro, Mechanics, and On-chain

  • Curated list of top upcoming airdrops (free money)

3X Value Guarantee

If cumulative documented upside does not reach 300% during your 12-month membership, you can request a full refund.

Terms & Conditions apply

Star

Trusted by 300,000+ investors

Our track record speaks for itself

With over 2.4M tokens and widespread misinformation in crypto, we cut through the noise and consistently find winning assets.

Our track record speaks for itself

With over 2.4M tokens and widespread misinformation in crypto, we cut
through the noise and consistently find winning assets.

/images/advertorial/corpcomm3.webp
/images/advertorial/corpcomm4.webp
/images/advertorial/corpcomm5.webp

Frequently Asked Questions

Yes. We've consistently identified winners across multiple cycles. Bitcoin under $1,000, Ethereum under $70, Solana under $10, WIF from $0.003 to $5, PopCat from $0.004 to $2, SPX blasting past $1.70, and our latest pick has already 200X'd since June 2025. Everything is timestamped and public record.

No. When we founded Cryptonary in 2017 the market was new to everyone. We intentionally created content that was easy to understand and actionable. That foundational principle is the crux of Cryptonary. Taking complex ideas and opportunities and presenting them in a way a 10 year old could understand.

Signal vs noise. We filter out 99.9% of garbage projects, provide data backed analysis, and have a proven track record of finding winners. Not to mention since Cryptonary's inception in 2017 we have never taken investment, sponsorship or partnership. Compare this to pretty much everyone else, no track record, and a long list of partnerships that cloud judgements.

We share highly sensitive, time-critical research. Once it's out, it can't be "returned." That's why membership is annual only. Crypto success takes time and commitment. If someone is not willing to invest 12 months into their future, there is no place for them at Cryptonary.

Yes. You will have 24/7 to the team that bought you BTC at $1,000, ETH at $70, and SOL at $10. Through our community chats, live Q&As, and member only channels, you can ask questions and interact directly with the team. Our team has over 50 years of combined experience which you can tap into every single day.

Daily. We provide real-time updates, weekly reports, emergency alerts, and live Q&As when the markets move fast. In crypto, the market moves fast, in Cryptonary, we move faster.

We stand behind the value of our research. If the documented upside from our published research during your 12-month membership does not exceed three times (3X) the annual subscription cost, you can request a full refund. Historical context: In every completed market cycle since 2017, cumulative documented upside has exceeded 10X this threshold.

Recommended from Cryptonary
BTC, ETH and More: Key Levels Tested Again Across Majors
PRO
Market Updates
BTC, ETH and More: Key Levels Teste...Markets are moving fast, but direction remains elusive. Price has been active across majors, sweepin...
10 min read
Dec 19, 2025
Market Pulse: Bitcoin's Security Under Debate
Market Pulse
Market Pulse: Bitcoin's Security Un...Speculation around quantum computing threats to Bitcoin is ramping up, shaking confidence just as ri...
2 min read
Dec 19, 2025
AMA with Adam & Abror: 18th december
PRO
Livestreams
AMA with Adam & Abror: 18th decembe...In this conversation, Abror and Adam discuss the recent inflation data and its impact on the market,...
1 min read
Dec 19, 2025