revision

revision

1. cyber defences

   • backups keeping a copy of important data on a different system, so that it can be restored if the original is damaged
   • security software often called antivirus software even though it deals with more than just viruses, scans computers for known malware and removes it. Must be kept up to date with the latest malware definitions.
   • ethical hacking
     • grey hat hacking hacking done without the authorisation of the company, but with good intentions, often the company will be informed of how the hacker was able to gain access
     • white hat hacking, hacking that is done with the authorisation of the company being hacked. The hacker produces a report of all the vulnerabilities they found, so that the company can fix them.

2. cyber attacks

   • phishing – sending a fake email or message pretending to be from a bank or organisation, which tricks users into trying to log on to a fake website, stealing the login details
   • malware malicious software designed to cause harm
     • ransomware Malware that encryps users files and demands for a ransome to decryp them
     • botnet a network of computers which contain malware allowing them to be controlled by a hacker
     • keylogger malware that records every keypress and sends it to a hacker for analysis