Question

who infect once and then use computer networks to spread to other machines

Answer 1

Answer:

Virus infect once and then use computer networks to spread to other machines.

Viruses are the malicious software program which infects one system and make replicas of itself and modifies other computer programs and inserts its own code.

Viruses can range in severity from causing mildly annoying effects to damaging data or software and causing denial-of-service (DoS) conditions.