Criminals are using CSS to get around filters and track email usage

Cisco Talos says hackers are abusing CSS in emails The stylesheet language is used to hide content, track people's behavior, ...
Bleeping Computer

Office 365 Phishing Uses CSS Tricks to Bypass Email Gateways

A phishing campaign using Office 365 voicemail lures to trick them into visiting landing pages designed to steal their personal information or infect their computers with malware. The phishing emails ...
Security Boulevard

NDSS 2025 – Exploiting the Complexity Of Modern CSS For Email And Browser Fingerprinting

Leon Trampert (CISPA Helmholtz Center for Information Security), Daniel Weber (CISPA Helmholtz Center for Information Security), Lukas Gerlach (CISPA Helmholtz Center for Information Security), ...