CSS: The Hidden Threat Lurking in Your Inbox
Researchers warn that CSS, once purely for design, can now be used to exfiltrate data from webmail, leaving some vendors unprepared for the threat.
Researchers warn that CSS, once limited to web design, now poses a significant security threat in webmail. It can be used to exfiltrate sensitive data from inboxes by exploiting styling features. Some email vendors remain unprepared for this attack vector, leaving users vulnerable.