SQL Slammer is another worm that first appeared in 2002. The main aim of this computer virus is to cause DDoS attacks via the machine it infects first. This computer worm primarily targeted Microsoft SQL 2000 servers that hadn’t been updated in a long time.
SQL Slammer mainly spreads through the internet, where it scans the online world for systems with vulnerabilities. Hackers can program SQL Slammer in a packet sized 376 bytes. If there is a vulnerable server nearby, SQL Slammer can infect it through the internet.