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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 […]

More from 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

AWS, Google and Oracle may benefit as Microsoft blames the Pentagon and the Pentagon blames Microsoft A hole in a Department of Defense email server operated by Microsoft left more than a terabyte of sensitive data exposed less than a month after Office 365 was awarded a higher level of US government security accreditation.…

More from The Register 24 Feb 2023, 8:30 a.m. Amazon Web Services Azure Email Exposure Google Government Microsoft Office 365 Oracle