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5 Early Programming Languages That Still Power The Internet Today
Jakub Zerdzicki/Getty Images Programming languages that power the internet are often a lot older than you think. While a ton of new frameworks or variations on popular languages are released regularly, major sites and most of the internet still hinge on languages that predate the world wide web in some spots. These languages are a … Read more
CSS Email Attacks Let Hackers Steal Passwords, Tokens and Hijack AI Browsers
A newly disclosed findings show that seemingly harmless in emails can be weaponized to steal login credentials, hijack authentication tokens, and manipulate AI-powered browsers, all while bypassing the sanitization filters webmail providers rely on to keep users safe. Webmail clients such as Gmail, Outlook, Fastmail, ProtonMail, Yahoo Mail, and AOL Mail must render untrusted HTML … Read more
New CSS Bomb Attacks Let Hackers Steal Passwords and Tokens From Webmail Users
Security researcher Gareth Heyes has revealed techniques for , the technologies used to format emails, to manipulate user interfaces, leak authentication data, and in some cases, capture passwords. Webmail services need to display HTML controlled by the sender without compromising the security of the mailbox application. To achieve this, providers sanitize the markup and restrict … Read more
CSS Bomb Attacks Turn Malicious Emails Into Password-Stealing Keyloggers
A new class of email-based attacks that exploit ordinary CSS styling code to hijack webmail interfaces, spy on user activity, and even steal passwords in real time, all without relying on JavaScript or traditional malware. Dubbed “CSS bomb” attacks, the technique weaponizes trusted formatting features found in nearly every major webmail platform, turning a routine … Read more
Webmail CSS Attacks Expose a New Risk for AI-Powered Email Tools
Webmail CSS Attacks Expose a New Risk for AI-Powered Email Tools August 09, 2026 CSS attacks on major webmail services can steal credentials, hijack sessions and manipulate AI tools connected to users’ inboxes. PortSwigger researcher Gareth Heyes demonstrated something that should make every webmail team a little nervous: plain CSS, the styling language that’s supposed to … Read more
New CSS Attacks Can Break Webmail Defenses to Steal Passwords and Tokens
Swati KhandelwalAug 08, 2026Email Security / Vulnerability 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 … Read more
CSS:the bomb inside your inbox
Published: Thursday, 6 August 2026 at 22:00 UTC Updated: Thursday, 13 August 2026 at 09:21 UTC – – It’s quite common for webmail clients to render untrusted CSS in a trusted UI. They attempt to make this safe using CSS sanitization. In this paper I’m going to show you how to break out of trust … Read more