CSS Shenanigans: How Spammers Style Their Way Past Your Spam Filters!
Malicious actors are exploiting CSS to bypass spam filters and track users, according to Cisco Talos. By leveraging CSS properties like text-indent and opacity, attackers hide content in emails, evading detection. These tactics can lead victims to phishing pages and allow for potential fingerprinting attacks, compromising security and privacy.

Hot Take:
Who would’ve thought that Cascading Style Sheets (CSS), the unsung hero of web design, could moonlight as a tool for cyber espionage? It’s like finding out your yoga instructor is a secret agent. CSS has graduated from merely making your web pages pretty to becoming a cybercriminal’s best friend, bypassing those pesky spam filters like they’re nothing. Move over, James Bond; there’s a new secret agent in town, and it’s wearing a stylesheet cape.
Key Points:
– Malicious actors are using CSS to dodge spam filters and track user actions.
– Features of CSS allow tracking even when dynamic content is restricted.
– Hidden text salting in emails can fool detection engines.
– CSS properties like text-indent and opacity help conceal content.
– Advanced filtering mechanisms are recommended to combat these threats.