Security Lessons
Security Lessons
You can find here lots of security related lessons including, Internet security, email security, password security, viruses and lots more. You can also view these lessons in an interactive way by clicking on the Interactive Lesson and to share the knowledge you can send these lessons to your friends via Email.
Security Lessons
PC Security
Level: Teens

Online hacking is the illegal entry into a computer through system gaps using spyware to obtain, tamper with or destroy data.

Hacking methods:

  • Probes and scans. attempts to discover information about remote computers
  • Account compromise. Discovery of user accounts and their passwords.
  • Packet sniffing. Capturing data that is sent across a network.
  • Denial of service. Flooding a network with requests that can overwhelm it .
  • Malicious code. Trojan horses, worms, viruses
  • Spoofing. Making a computer look like a "trusted computer".

Types of Hacking:

  • Hacking of servers and main frames..
  • Hacking of PCs.
  • Interception of data during transmission on the net.
  • Distortion of Websites by changing their content.
  • Denial-of-service attacks.

Hacking motives:

  • Political. Attacks against a governmental site or an institution.
  • Economical. Such as unfair trade competitions.
  • Retaliation. Some dissatisfied workers may try to take revenge of their institutions.
  • Subversive nature. To Satisfy a hacker destructive desires.
  • The abundance of hacking programs. Testing hacking programs.
  • Price. People want to get free access to expensive computer programs.

Hacking consequences:

  • Violations of the law and accountability.
  • Reputation damage.
  • Waste of resources.
  • Waste of time.

How to protect your PC against hacking:

  • Install Software Updates and patches.
  • Install a firewall program.
  • Install an antivirus program and keep it updated.
  • Have a strong password and change it regularly.


All network connections are vulnerable to hacking.