CoinMarketCap has issued a security alert concerning a malicious pop-up on its website that prompts users to 'Verify Wallet.' The platform advises users not to connect their wallets to this prompt as it is part of a potential phishing attack. The CoinMarketCap team is actively investigating the issue and working to resolve it. This alert, issued on June 21, 2025, underscores the critical need for vigilance in online security within the cryptocurrency community.