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Efficient Ops
Efficient Ops
Aug 14, 2017 · Information Security

Critical Xshell Backdoor Alert: How Malicious DLLs Leak Data and What to Do

A recent security advisory reveals that popular remote terminal Xshell versions contain a backdoor in the nssock2.dll component, enabling shellcode to harvest host information, generate monthly DGA domains, and potentially expose sensitive data, prompting immediate version checks and upgrades.

DGAXshellbackdoor
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Critical Xshell Backdoor Alert: How Malicious DLLs Leak Data and What to Do