CSS: The Hidden Threat Lurking in Your Inbox | HappeningNow.news

Cybersecurity · 166 views

CSS: The Hidden Threat Lurking in Your Inbox

CSS was once just about design. Now researchers warn it's powerful enough to exfiltrate data from webmail — and some vendors aren't prepared.

Source AI Summary Published August 5, 2026 Brief Under 1 min brief
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The use of CSS in webmail has raised concerns about its potential to exfiltrate data. Researchers have found that CSS is powerful enough to be used for malicious purposes, including data extraction from webmail. This capability was previously associated with design, but its versatility has made it a potential threat. The preparedness of vendors to address this issue is uncertain, as some may not be equipped to handle the risks associated with CSS in webmail.

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