Why the browser is now the front line for AI security

AI is making phishing attacks faster and harder to stop, with attackers using AI to quickly create and rotate phishing infrastructure (fake websites designed to steal login information) across multiple channels like email, social media, and search ads, while employees simultaneously adopt unvetted AI tools that expose sensitive data. Traditional security defenses that rely on blocklists and IOC feeds (indicators of compromise, like flagged domain names and IP addresses) are becoming ineffective because phishing pages now appear and disappear in hours, making them essentially zero-day attacks (previously unseen threats) that blocklists cannot catch in time. The article argues that browsers are now the critical security battleground where both attacker delivery and account compromise occur.