CoinMarketCap experienced a front-end security breach that temporarily exposed users to a malicious wallet verification pop-up, marking another high-profile crypto phishing incident.
How the Attack Unfolded
- Hackers exploited a doodle image feature to inject malicious JavaScript code
- The attack used CoinMarketCap’s backend API to deliver a manipulated JSON payload
- Users saw fake “Verify Wallet” pop-upsâa classic phishing tactic to steal crypto credentials
- The compromised script ran briefly before being detected and removed
Technical Breakdown
Security firm Coinspect Security analyzed the attack:
- Attackers leveraged the platform’s rotating doodle display without altering core infrastructure
- The injected code triggered unauthorized wallet verification prompts across the site
CoinMarketCap’s Response
The company quickly mitigated the threat, stating:
“Upon discovery, we acted immediately to remove the problematic content. Comprehensive measures have been implemented to isolate and mitigate the issue.”
Unanswered Questions
- How many users were affected? (No disclosure yet)
- Were any wallets compromised? (No confirmed reports)
User Protection Recommendations
- Never enter wallet credentials on unexpected pop-ups
- Bookmark official sites to avoid fake domains
- Use hardware wallets for critical transactions
- Enable 2FAÂ on all crypto accounts
Broader Implications
This incident highlights:
 Growing sophistication of crypto phishing attacks
 Front-end vulnerabilities in major platforms
 Need for enhanced security audits of API integrations
Stay vigilantâalways verify requests for sensitive wallet actions.
Disclaimer
This content is for informational purposes only and does not constitute financial, investment, or legal advice. Cryptocurrency trading involves risk and may result in financial loss.