Why some computer viruses refuse to die
Posted in: Legal & Security at 14/08/2018 22:00
There are zombies on the internet - odd, undead lumps of code that roam endlessly seeking and finding fresh victims to infect that help keep the whole ugly horde staggering on, and on.
Most of these shambling data revenants are computer viruses and the most long-lived of all are worms.
"Most of those worms are self-spreading - that's why we still see them moving around," said Candid Wueest, principal threat researcher at Symantec, who has hunted viruses for years.
Typically, he said, when these malicious programs infected a machine, they kicked off a routine that scanned the entire net looking for other computers vulnerable in the same way as their current host.