Tag: smtp relay

1 Attack Reports | 0 Vulnerabilities

Attack reports

PCPJack Hijacked 230 AWS, GCP, and Azure Servers to Run a Hidden SMTP Relay Network

PCPJack operators compromised 230 cloud Linux servers across AWS, GCP, and Azure to build a covert SMTP relay network for email-based attacks. Researchers discovered exposed directories on infrastructure at 213.136.80[.]73 containing complete deployment toolkits including Chisel binaries, Python de…
sliver
chisel
proxy network
teampcp
pcpjack
2026-06-03
cloud compromise
smtp relay
Published: June 3, 2026
Linked vulnerabilities : CVE-2021-4034
Downloadable IOCs: 2
Click here to see more Attack Reports