Northland Security Systems. Computer Viruses Types of Viruses  Nuisance viruses  Data-destructive viruses  Espionage viruses  Hardware-destructive.

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Presentation transcript:

Northland Security Systems

Computer Viruses

Types of Viruses  Nuisance viruses  Data-destructive viruses  Espionage viruses  Hardware-destructive viruses  Nuisance viruses  Data-destructive viruses  Espionage viruses  Hardware-destructive viruses

Methods of Operation  viruses  Macro viruses  Boot sector viruses  Trojan horse viruses  Stealth viruses  Polymorphic viruses  Logic (time) bombs  viruses  Macro viruses  Boot sector viruses  Trojan horse viruses  Stealth viruses  Polymorphic viruses  Logic (time) bombs

Virus Symptoms  Files become corrupt  Program does not operate properly  Programs or files vanish  Strange messages appear on monitor  Less memory space available  A volume name has changed  message appears repeatedly  Files become corrupt  Program does not operate properly  Programs or files vanish  Strange messages appear on monitor  Less memory space available  A volume name has changed  message appears repeatedly

Security Strategies  Data backup  Disaster recovery plan  Data encryption  User IDs and passwords  Biometric authentication  Network sniffers  Mini webcams  Firewalls  Data backup  Disaster recovery plan  Data encryption  User IDs and passwords  Biometric authentication  Network sniffers  Mini webcams  Firewalls

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