# fingerprinting

**Fingerprint harvesting in the bot ecosystem**  
Published  April 22, 2026  
[Antoine Vastel](/content/research/author/antoine-vastel/index.html)  
This report uncovers how bot ecosystems harvest and reuse real browser fingerprints, including signals from commercial anti-bot systems, to scale realistic impersonation. These fingerprints are becoming operational assets, enabling more efficient and harder-to-detect automation. The implication is clear: detection systems must assume replay and treat client-side signals as untrusted.

**BotmasterLabs: Powering an Era of Spam**  
Published  March 23, 2026  
[Antoine Vastel](/content/research/author/antoine-vastel/index.html), [Nicolas Sama](/content/research/author/nicolas-sama/index.html), [Naif Mehanna](/content/research/author/naif-mehanna/index.html), [Kurt Nistelberger](/content/research/author/kurt-nistelberger/index.html)  
How XRumer and XEvil scaled forum spam by combining automation, CAPTCHA solving, and brittle fingerprinting.