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vulnerabilities
CSS: The Hidden Threat Lurking in Your Inbox
Researchers have identified that Cascading Style Sheets (CSS) can be exploited to exfiltrate data from webmail clients, presenting a security risk that some email vendors have not adequately addressed. The discovery highlights an unexpected attack vector using a technology traditionally associated with web design.
Why it matters: Email users and organizations managing webmail infrastructure should understand this CSS-based exfiltration risk and verify that their vendors have implemented mitigations, as this attack could expose sensitive messages and credentials.
- Source published
- First seen by Cybersecurity Tracker