The first known computer virus was called Brain, and compared to today’s malware, it was pretty mild.
Then the Morris worm took down the still-young Internet, and triggered the development of firewalls (now part of virtually every network – Cisco is a huge player here). Since then we’ve had viruses, worms, Trojans and more, and as fast as we’ve figured out how to stop one kind of malware, another emerges. Pioneer anti-virus products like McAfee VirusScan (company founded 1987) Trend Micro (1988) and Symantec’s Norton Anti-Virus (released 1990) continue to battle on. It’s not certain who’s winning.