CoinMarketCap, one of the most widely used cryptocurrency data platforms, is currently facing a serious security incident after its front-end was reportedly compromised by malicious actors.
CoinMarketCap, one of the most popular cryptocurrency data platforms, is reportedly facing serious security breaches. As people try to access the website today, they are met with security warnings from potential phishing attacks.
MetaMask has flagged the site as “Deceptive”, citing risks such as fake wallet interfaces, secret recovery phrase theft, and malicious transactions. Users are urged to stay cautious amid suspected redirect or phishing activity.

According to multiple user reports and a warning from MetaMask, visitors to the site are being shown deceptive pop-ups urging them to “Verify Wallet.” These prompts are believed to be part of a phishing scheme designed to trick users into connecting their crypto wallets, potentially exposing them to asset theft.
🚨 BREAKING: CoinMarketCap has reportedly been hacked. DO NOT ENTER YOUR PRIVATE #Bitcoin KEYS!! 🚨 pic.twitter.com/vpCR0JHykZ
— Carl ₿ MENGER ⚡️🇸🇻 (@CarlBMenger) June 20, 2025
CoinMarketCap recently acknowledged the security breach in a recent post on Twitter:
🚨 Security Alert
— CoinMarketCap (@CoinMarketCap) June 20, 2025
We’re aware that a malicious pop-up prompting users to "Verify Wallet" has appeared on our site.
⚠️ Do NOT connect your wallet.
Our team is actively investigating and working to resolve the issue.
The repercussions of this breach could be catastrophic for the company and the people who regularly check the website on a daily basis. CoinMarketCap reportedly receives over 340 million visits a month, meaning that millions of cryptocurrency holders could have been exposed to potential phishing attacks.
At this time, the attack appears to be limited to the platform’s front-end interface, meaning the underlying data and infrastructure may remain intact. However, users are strongly advised to avoid visiting the site until the issue is resolved and to never connect their wallets or input sensitive information.
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