Symantec distributes the product as a download, a box copy, and as OEM software. Other features included in it are e-mail spam filtering and phishing protection. It uses signatures and heuristics to identify viruses. Norton AntiVirus is an anti- virus or anti- malware software product, developed and distributed by NortonLifeLock since 1991 as part of its Norton family of computer security products. Microsoft Windows ( Windows 95 and later), macOS, Linux