Nati Tal, Head of Guardio Labs, discusses their work on "“DeceptionAds” — Fake Captcha Driving Infostealer Infections and a Glimpse to the Dark Side of Internet Advertising." Guardio has uncovered a large-scale malvertising campaign dubbed “DeceptionAds,” which tricks users into running a malicious PowerShell command under the guise of proving they’re human. This fake CAPTCHA scheme delivers Lumma info-stealer malware while bypassing security measures like Google’s Safe Browsing.
Even after disclosure and takedown efforts, the campaign resurfaced—raising concerns about the effectiveness of existing defenses against ad-driven cyber threats.
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