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Researchers uncovered a 230-node cloud-based email relay network after the actor PCPJack accidentally exposed tools, logs, and C2 files online A threat actor tracked as PCPJack compromised 230 cloud servers across Amazon Web Services, Google Cloud, and Microsoft Azure and turned them into a covert email relay network. Hunt.io researchers discovered the operation because PCPJack […]

Security Affairs 5 Jun 2026, 10:19 p.m. Incident · 2 stories Amazon (company) Amazon Web Services Azure Cloud Compromise Email Exposure Google Microsoft Research Threat Actor