Just-In: Bitfinex Suffers Data Breach, Tether CEO Says “Seems Fake”

Bitfinex, a major cryptocurrency exchange, faces turmoil as reports of a significant data breach surface.
By Coingape Staff
Updated May 20, 2025
Bitfinex

Highlights

  • Bitfinex, a leading cryptocurrency exchange, grapples with reports of a massive data breach, involving 2.5 terabytes of data and 400,000 customer records.
  • Tether's CEO questions the authenticity of the breach, citing discrepancies in the leaked data and emphasizing Bitfinex's robust security measures.
  • Despite concerns, Bitfinex assures users that thorough analysis has not revealed any breaches and pledges to prioritize the safety of user funds.

Bitfinex, a prominent cryptocurrency exchange, has been rocked by news of a significant data breach. According to reports, approximately 2.5 terabytes of data, including sensitive information from around 400,000 customers, has been leaked. The revelation has sparked widespread panic among users concerned about the security of their accounts and assets given that there has been a prior hack. In response to these alarming developments, the CEO of Tether, the company behind the USDT stablecoin often used on Bitfinex, has cast doubt on the legitimacy of the breach. He expressed skepticism, stating that the situation “seems fake” based on the available information.

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Confirmation of Bitfinex Data Breach and Response from Tether CEO

Tether CEO Paolo Ardoino confirmed that the data breach news was fake. In light of the emerging details surrounding the data breach, Tether CEO has offered more insights into the situation. While acknowledging the existence of the leaked data, he highlighted several key points that call into question the validity of the breach. According to the CEO, the alleged hackers have posted two mega links containing sample data, which purportedly includes 22.5 thousand records of email addresses and passwords. However, he emphasized that Bitfinex does not store plaintext passwords or 2FA secrets in clear text.

Furthermore, only 5,000 of the 22,500 emails match Bitfinex users’ credentials. The CEO also noted the absence of direct communication from the hackers, indicating that their initial post set a deadline for contact, yet no legitimate attempt to reach Bitfinex has been made. Despite the alarming nature of the situation, Tether’s CEO reassured users that thorough analysis of their systems has not revealed any breaches thus far. Additionally, he highlighted the robust security measures in place, such as heavy rate limiting on the KYC platform, which would deter bulk data downloads.

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Assessment of the Situation and Assurance of Fund Safety

Despite the widespread concern and speculation surrounding the alleged data breach, Bitfinex remains steadfast in its assurance of fund safety. The exchange is actively monitoring the situation and conducting a comprehensive analysis of its systems to detect any potential vulnerabilities or breaches.

While acknowledging the prevalence of fear, uncertainty, and doubt (FUD) in the cryptocurrency community, Bitfinex is committed to maintaining transparency and diligence in addressing security concerns. The exchange encourages users to remain vigilant and report any suspicious activity promptly. As investigations continue and additional information emerges, Bitfinex pledges to keep users informed and take necessary measures to safeguard their assets and personal information.

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Coingape Staff
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