Security

1
Security

• By
• Arisara Sangsopapun

2
What is computer security

• Prevention
• prevent assets from being damaged
• Detection
• allow you detect when asset has been damaged
• Reaction
• allow you recover asset

3
Threats, Vulnerabilities and Attacks

• Threat
• is any incidences that have an undesirable effect
  on asset
• Vulnerability
• is some unfortunate characteristic that makes it
  possible for a threat
• Attack
• is some action involves the exploitation of
  certain vulnerabilities and leads to threat

4
Types of Threats

• Disclosure Threat
• the dissemination of information to an individual
  for whom that information should not be seen
• Integrity Threat
• any unauthorized change to information stored on
  a computer system
• Denial of Service Threat
• occurs when access to computer system resource is
  intentionally blocked as a result of bad action
  taken by another user

5
Trojan Horses and Viruses

• Trojan Horse
• any program that is expected to perform some
  desirable function, but it actually performs some
  undesirable function
• Viruses
• virus can reproduce itself and infect other
  program

6
Common Attack Methods

• Password Spoof program
• spoofing the use to believe that computer is
  correctly and prompting that user for login and
  password information
• Logic Bomb
• is coded embedded in some program that is set to
  explode when certain criteria are met

7
Simple Attack Prevention Methods
Individual Screening Checking the background,
credentials, family and other personal
information of individual who can possible
attack Physical Controls securing the
facility and enclosure the surrounding a
computer system. Care in Operations being
careful in our own activities to avoid common
types of attack