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New, by me: A Dark Adtech Empire Fed by Fake CAPTCHAs

Late last year, security researchers made a startling discovery: Kremlin-backed disinformation campaigns were bypassing moderation on social media platforms by leveraging the same malicious advertising technology that powers a sprawling ecosystem of online hucksters and website hackers. A new report on the fallout from that investigation finds this dark ad tech industry is far more resilient and incestuous than previously known.

https://krebsonsecurity.com/2025/06/inside-a-dark-adtech-empire-fed-by-fake-captchas/