Site flagged by Google Safe Browsing as deceptive or malicious
Google Safe Browsing is the system behind the full-page red warning screens shown by Chrome, Firefox, Safari, and Edge when a site is believed to be distributing malware or behaving deceptively. This check looks for whether the site's domain or a specific path on it is currently flagged. On this site, a domain or path was found flagged by Google Safe Browsing. Once flagged, every major browser shows visitors a full-page warning before they can even reach the site, and traffic drops to near zero almost immediately, since very few people click through a warning telling them a site is dangerous. This is usually a symptom of a real underlying compromise, a hacked content management system, a malicious ad slipping through an ad network, or a vulnerable plugin, rather than an isolated flag. Your developer needs to investigate and remediate the underlying cause urgently, most commonly a compromised CMS, a malicious third-party ad, or a vulnerable plugin. Once fixed, request a review through Google Search Console under Security Issues. Typical resolution time after the fix ships is 24 to 72 hours before the warning is lifted.
Why this matters
Once flagged, every major browser shows visitors a full-page warning before they can even reach the site, and traffic drops to near zero almost immediately, since very few people click through a warning telling them a site is dangerous. This is usually a symptom of a real underlying compromise, a hacked content management system, a malicious ad slipping through an ad network, or a vulnerable plugin, rather than an isolated flag.
How to fix it
Your developer needs to investigate and remediate the underlying cause urgently, most commonly a compromised CMS, a malicious third-party ad, or a vulnerable plugin. Once fixed, request a review through Google Search Console under Security Issues. Typical resolution time after the fix ships is 24 to 72 hours before the warning is lifted.