A trojanized copy of the open-source FTP client FileZilla 3.69.5 is circulating online. The archive contains the legitimate FileZilla application, but with a single malicious DLL added to the folder. When someone downloads this tampered version, extracts it, and launches FileZilla, Windows loads the malicious library first. From that moment on, the malware runs inside what appears to be a normal FileZilla session. Because the infected copy looks and behaves like the real software, victims may not realize anything is wrong. Meanwhile, the malware can access saved FTP credentials, contact its command-and-control server, and potentially remain active on the system. The risk does not stop with the local computer. Stolen credentials could expose the web servers or hosting accounts the user…