Computer Security

1
Computer Security

• An Introduction

2
Synopsis

• Viruses
• Spyware
• Rootkits
• Worms
• Identity Thieves and Phishers
• Spam

3
Viruses

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

4
Viruses II

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

5
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 P2P prtograms
• ALWAYS run a virus protection program
• Run a firewall
• Don't accept unsolicited files when using IM
  systems

6
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.

7
Spyware

• 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

8
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.

9
Types of spyware

• Programs
• Pop-ups
• Snoopware
• Browser hijackers
• Key loggers
• Dialers
• Browser cookies

10
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

11
Rootkits
12
Worms
13
Identity Thieves and Phishers
14
SPAM