Network Security & Threats (OCR A-Level Computer Science): Flashcards

Gain unauthorised access to steal, alter, or destroy data

Malicious programs that replicate & spread, harming files/network

Overloads network/server with excessive requests, blocking users

Secretly monitors & records user actions to steal information

Malicious SQL code injected into queries to access/manipulate data

Tricks users into providing sensitive info by faking legitimacy

Redirects users from legitimate sites to fake ones unknowingly

Filters traffic based on rules, blocking unauthorised access

Intermediary between users & internet, masks IP addresses

Transforms data into secure format, unreadable without key

Uses same key for encryption and decryption

Uses pair of keys: public (encrypt) & private (decrypt)

Adds extra security layer requiring second verification form

Detects, quarantines, & removes malicious software

Monitors network traffic for suspicious activity, sends alerts