A sophisticated malspam campaign discovered by the Hunterss exploits Google’s DoubleClick ad-tracking infrastructure to bypass email security gateways before deploying a multi-stage. According to Hunterss, initial access begins with a malicious HTML attachment Bestellung_2026.html (“order” in German) containing a zero-second meta-refresh redirect to a legitimate ad.doubleclick[.]net click-tracking URL. Because DoubleClick is a high-reputation Google-owned domain, most email gateways and […]
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