Cyber security threats
Watch the whole lecture free
Make a free account to watch every lecture to the end: 7 practice questions, 2 real past-paper questions with the answers explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
That was the teaching part. The rest of this lecture is free with an account: 7 practice questions, 2 real past-paper questions with the answers explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
No password needed now: we email you a link to set one. Already have an account? Sign in, then come back to this page.
The teaching part (1 min) is free to watch. A free account opens the whole lecture: 7 practice questions, 2 real past-paper questions with the answers explained, the mistakes that lose marks, the full-marks tip, a one-card summary and a quick quiz.
What this lecture covers
- Under attack
- Brute-force attack
Read the transcript of the teaching part
Last time
Before we start: last time, in Digital currency and blockchain, you learned these points. Here they are again on one card. Keep them in mind, because today builds on them.
Under attack
Every day, criminals try to break into accounts, steal data and knock websites offline. Cyber security is about protecting systems, networks and data from attack, damage and unauthorised access. To defend, you must first know the attacks. There are eight to learn, and malware has several kinds.
Brute-force attack
In a brute-force attack, a hacker uses trial and error to find a password. Software tries every possible combination, starting with common passwords. It keeps going until the correct password is found. The aim is to gain unauthorised access, then steal, change or delete data.
How often it comes up
The whole chapter: Cyber Security.
Chapter 5.3: Cyber security threats
- Cyber security threats 6 min
Also for IGCSE Computer Science 0478
Which topics come up most in IGCSE Computer Science 0478 past papers, counted from every paper since 2004: Paper 1 topic frequency, Paper 2 topic frequency.