Security

Traffic Distribution System (TDS)

A traffic distribution system is software that decides where to send each visitor based on traits such as location, browser or referrer. Malware operators use one to show payloads to real victims and hide them from security scanners.

Deep dive

Learn Article

What Is a Polyglot File and Why Upload Checks Miss It

A polyglot file is valid in two formats at once, such as an image that also holds script. Learn why upload checks miss it and how to defend.

beginner 5 min read

Back to glossary