New CSS Attacks Can Break Webmail Defenses to Steal Passwords and Tokens

Organization: info@thehackernews.com (The Hacker News)

Location: Global

Source: info@thehackernews.com (The Hacker News)

New research shows content inside an email can escape its message boundary and interfere with the webmail interface. Across attack chains spanning Outlook, Gmail, Fastmail, Proton Mail, Yahoo Mail, and AOL Mail, the techniques can capture passwords, take over third-party accounts, leak tokens, hijack trusted UI actions, and manipulate AI tools that read email. PortSwigger researcher Gareth


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