Pearson Edexcel GCSE Computer Science (1CP2)Specification point 4.2.1

Edexcel 1CP2 4.2.1: Network security

The free BugBot lessons that teach this point, a robot to try it on, and the past-paper questions that test it.

What it covers

Some attacks go straight at the network and its computers. This lesson covers the ones on the exam: guessing passwords by brute force, flooding a service until it falls over, listening in on data as it travels, and tricking a database with SQL injection. You will build a detector that spots a flood of requests.

  • Brute force
  • Denial of service
  • Data interception
  • SQL injection
  • Detecting a flood
Read the free lesson (20 min)

Or do it in the simulator, with tasks that mark themselves

Lessons that teach it

  1. F11.4 Network attacks Cyber security
    Brute force, denial of service, data interception and SQL injection, and detecting a flood.
  2. F11.7 Defending a network Cyber security
    Firewalls, anti-malware, access levels, updates, backups, penetration testing and policies.
  3. F11.9 Project: secure the robot Cyber security
    Authenticate with a password, decrypt an encrypted command, and act on it.

Try it on a robot

The task from F11.4 Network attacks, running here. Change the program and press Run.

The specification is Edexcel's own document; this page says which of our lessons teach point 4.2.1 and is not endorsed by the board.