Malware types

• Virus

  Inserts itself into other computer programs

  Replicates and spreads into another program
• Trojan horse

  Disguised as a useful program but contains malicious code

  Can't self replicate

  Can provide a backdoor
• Rootkit


  Collection of malware

  Used to create backdoor

  Work at lower levels

  Hard to detect

  More control over system
• Ransomware


  Threaten to block access or release personal information unless you pay them
• Worm


  No host program Replicates quickly

  Works over networks

  Spreads between computers to slow them down