: Unlike a "virus" that spreads by itself, a Trojan must be manually downloaded or run by a user—often disguised as a helpful tool, game, or document.
: Once run, it may hide in your system folders (like C:\Windows\System32 ) and set itself to launch automatically every time you start your PC. Signs of Infection Trojan.exe
: High CPU or disk usage that makes your computer lag or crash. : Unlike a "virus" that spreads by itself,