Malware blacklists are lists maintained by security vendors and browsers (Google Safe Browsing, Norton, McAfee, etc.) of sites known or suspected to host malicious content. Being listed means visitors see a warning page instead of your site, in the browser itself.
How to check
- Use a multi-engine blacklist checker that queries several vendors at once, since each maintains its own list independently
- Check Google Search Console’s Security Issues report directly if the site is verified there
Common causes of getting listed
- A compromised plugin or theme (especially on CMS platforms) injecting malicious scripts
- Outdated software with a known, exploited vulnerability
- Compromised FTP/hosting credentials used to upload malware directly
FAQ
How long does it take to get removed from a blacklist after fixing the issue?
It varies by vendor, from a few hours to several days, and typically requires actively submitting a review request after cleaning the site — removal isn’t automatic just because the malware is gone.