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February 4, 2026

Notepad++ users take note: It’s time to check if you’re hacked Dan Goodin | usagoldmines.com

Infrastructure delivering updates for Notepad++—a widely used text editor for Windows—was compromised for six months by suspected China-state hackers who used their control to deliver backdoored versions of the app to select targets, developers said Monday.

“I deeply apologize to all users affected by this hijacking,” the author of a post published to the official notepad-plus-plus.org site wrote Monday. The post said that the attack began last June with an “infrastructure-level compromise that allowed malicious actors to intercept and redirect update traffic destined for notepad-plus-plus.org.” The attackers, whom multiple investigators tied to the Chinese government, then selectively redirected certain targeted users to malicious update servers where they received backdoored updates. Notepad++ didn’t regain control of its infrastructure until December.

Hands-on keyboard hacking

Notepad++ said that officials with the unnamed provider hosting the update infrastructure consulted with incident responders and found that it remained compromised until September 2. Even then, the attackers maintained credentials to the internal services until December 2, a capability that allowed them to continue redirecting selected update traffic to malicious servers. The threat actor “specifically targeted Notepad++ domain with the goal of exploiting insufficient update verification controls that existed in older versions of Notepad++.” Event logs indicate that the hackers tried to re-exploit one of the weaknesses after it was fixed but that the attempt failed.

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This articles is written by : Nermeen Nabil Khear Abdelmalak

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