the.com/antivirus
The bouncer that ID-checks every file, sometimes mistaking your own code for a thug.
means Software that detects, blocks, and removes malicious programs trying to infect your computer.
from Borrowed from medicine's anti- (against) and virus (Latin for poison or slime); the digital sense bloomed in the late 1980s as the first PC plagues spread on floppy disks.
First defenderEarly antivirus chased viruses with literal names lists.
False positivesIt sometimes quarantines harmless files as suspects.
Signature huntingClassic engines match code against known-threat fingerprints.
Self-awareAntivirus itself is a prime malware disguise target.