Cyber-security

8. refers to the security of a computer or computer system
9. authentication mechanisms, access channels and systems all have to work properly
10. demands a ransom from you to get things back on track.
11. result in financial and reputational damage, requiring unplanned and often significant expenditure to recover.

1. ensure that information is hidden from people unauthorised to access it.
2. modifies other legitimate host files in such a way that when you execute a file in the victim’s system, you also execute the virus.
3. helps hackers spy on systems and their users.
4. self-replicating and spreads without end-user action, causing real devastation.
5. ensuring that data has not been tampered with and, therefore, can be trusted.
6. are attempts to expose users to unwanted, potentially malicious advertising.
7. malicious instructions that appear as legitimate programs.