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Recently, blockchain security firm CertiK identified a series of critical vulnerabilities in Kraken’s exchange platform that could potentially lead to losses amounting to hundreds of millions of dollars. The initial discovery was made within Kraken’s deposit system, which failed to correctly differentiate between various internal transfer statuses.

CertiK’s thorough investigation centered on three pivotal questions:

  1. Can a malicious actor fabricate a deposit transaction to a Kraken account?
  2. Can a malicious actor withdraw fabricated funds?
  3. What risk controls and asset protection measures might be triggered by a large withdrawal request?

Investigation Findings

CertiK’s testing revealed that Kraken’s defense systems failed to prevent fabricated deposits and withdrawals. Notably, the exchange’s security measures allowed for the deposit of millions of dollars into any Kraken account, the withdrawal of over $1 million in fabricated crypto, and conversion into valid cryptos. Alarmingly, no alerts were triggered throughout the multi-day testing period, and Kraken only responded and locked the test accounts days after the incident was officially reported.

Upon discovering these vulnerabilities, CertiK informed Kraken, which classified the issue as “Critical,” the most serious level of security threat at Kraken. Despite initial cooperation in addressing the vulnerability, Kraken’s security operations team reportedly threatened individual CertiK employees to repay mismatched amounts of crypto within an unreasonable timeframe, without providing proper repayment addresses.

Transparency and Call to Action

In response to these threats and in the interest of transparency and user security, CertiK decided to go public with their findings. They emphasized that no real Kraken users’ assets were directly involved in the research activities and that all fabricated tokens generated were part of their testing to expose the security flaws.

CertiK urges Kraken to cease any threats against whitehat hackers and focus on strengthening their security systems to safeguard the future of Web3. Despite Kraken’s security team failing to detect numerous test transactions and large withdrawals, the exchange’s response to the identified vulnerabilities highlights the need for improved risk control and prevention mechanisms.


CertiK’s findings underscore the importance of rigorous security protocols in cryptocurrency exchanges. As Web3 continues to evolve, exchanges like Kraken must prioritize robust security measures to protect users’ assets and maintain trust within the crypto community.

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