notepad++ security

The notepad++ security tag covers a supply-chain attack on Notepad++ that exploited its update infrastructure between June and December 2025. Attackers intercepted and redirected update traffic for certain users, delivering a custom backdoor called Chrysalis that provided hands-on-keyboard access. The incident highlights a vulnerability common to many Windows applications: an updater that trusts its download source without verification. Content under this tag provides guidance for both home users and enterprise defenders on identifying exposure and remediating affected systems. The tag focuses on this specific attack vector and its implications for Windows security practices.