A suspicious torrent link promised a free .msi installer. "Maybe it’s a mirror of the official one," Maya rationalized. She downloaded the file— Ica-x64.msi —but as installation began, her screen flashed an error: "Digital Signature Invalid." Confused, she forced through the install, only for Windows Defender to pop up, flagging the file as Trojan:Win64/CoreL.Downloader . She canceled the installation, heart racing. "What if I’ve already downloaded malware?" she thought, recalling a cybersecurity tip from a friend.