Protecting a Network - Word Drop

Out-of-date software is a ______, a weakness that an attacker could use. In a ______ test, authorised experts attack the organisation's own system to find weaknesses. They may find a website open to SQL injection before a criminal does. The test does not stop an attack itself, it shows which weaknesses need fixing. Installing software ______ removes weaknesses that are already known.

Anti-malware software detects, blocks and removes ______ such as viruses and ransomware. It checks new files against a database of known code patterns called ______. A file that matches is placed in ______ so it cannot run. It cannot protect against malware it does not recognise, so it needs regular updates.

A ______ monitors data going in and out of a network and blocks traffic that its rules do not allow. It can limit ______ of service attacks by blocking the addresses sending a flood of requests. It can also limit brute-force attacks by blocking repeated connection attempts. A firewall cannot stop a user being tricked into opening an infected attachment.

______ scrambles plaintext into ciphertext using an algorithm and a ______. Only someone with the correct key can decrypt it. It limits data ______ and theft, because captured or stolen card details cannot be read without the key. It does not stop data being intercepted or a device being stolen.