Computer Security An Introduction Synopsis Viruses Spyware Rootkits

Computer Security An Introduction

Synopsis Viruses Spyware Rootkits Worms Identity Thieves and Phishers Spam

Viruses A malicious computer program that, when executed by an unsuspecting person, performs tasks that include selfreplication and deploying a payload. Most common payloads: Jokes/vandalism Data destruction/corruption Spam distribution Information/data theft Hijacking Ransomware Virus and other malware distribution

Viruses II Kinds of viruses: Macro viruses Memory resident viruses File infector viruses Boot viruses Multi-partite Worms Trojan Horses Virus hoaxes

Virus protection Keep your computer up to date! Run a virus checker and keep it up to date! Use UAC and do not run as administrator. Do not open attachments Do not “click here” Don't use P 2 P prtograms ALWAYS run a virus protection program Run a firewall Don't accept unsolicited files when using IM

What to do if you DO get a virus Don't panic Disconnect the computer Boot into safe mode and re-run your anti-virus. If that fails, install another virus (in safe mode) and try that.

Spyware is software that usually installs in your computer without your knowledge and send back to its manufacturer information you would rather not divulge. Information that can be sent back: Websites visited Credit card and other numbers Key clicks Any information on your hard drive

Spyware II How does Spyware get installed? Automatic downloads from some websites. Sometimes being tricked into clickinga download. Sometimes embedded into some other software Sometimes it comes in an attachment, like a virus.

Types of spyware Programs Pop-ups Snoopware Browser hijackers Key loggers Dialers Browser cookies

Best defenses Windows Defender Increase Browser security settings Use the Real-Time protection feature in Windows defender Run full system scans weekly. Clean your cookies

Rootkits

Worms

Identity Thieves and Phishers

SPAM