I'd like to thank my co-author, Martin Zugec, for his valuable contributions to this report. This intrusion adds three dimensions to the public understanding of Chinese APT activity in contested ...

Hackers are impersonating IT staff in Microsoft Teams to trick employees into installing malware, giving attackers stealthy access to corporate networks. Microsoft Teams impersonation and social ...

IntroductionThreat actors often take advantage of major global events to fuel interest in their malicious activities. Zscaler ThreatLabz is diligently tracking a surge in cybercriminal activity that ...

A fake CAPTCHA scam is tricking Windows users into running PowerShell commands that install StealC malware and steal passwords, crypto wallets, and more. A new social engineering campaign is abusing ...

A China-linked threat actor known as Lotus Blossom has been attributed with medium confidence to the recently discovered compromise of the infrastructure hosting Notepad++. The attack enabled the ...

IntroductionIn May 2025, Zscaler ThreatLabz discovered CVE-2025-50165, a critical remote code execution (RCE) vulnerability with a CVSS score of 9.8 that impacts the Windows Graphics Component. The ...

In the world of cybersecurity, understanding the deepest layers of the operating system isn't just academic—it's essential. For those of us defending, analyzing, or testing Linux environments, the ...

ms17_vuln_status.cpp - This program sends 4 SMB packets. 1 negotiation, 1 session setup, 1 tree connect and 1 TransNamedPipe request. This program then reads the NT_STATUS response from the ...

For years, the Middle East has maintained its reputation as a fertile ground for advanced persistent threats (APTs). In the midst of routine monitoring of suspicious activities on the systems of ...

In late May, researchers drove out a team of China state hackers who over the previous seven months had exploited a critical vulnerability that gave them backdoors into the networks of a who’s who of ...