ding dong iiits 3 systems software and security Flashcards
what is a virus
a form of malware that inserts itself into normal programs so when the host program is executed, the virus is too
what is a worm
a form of malware that spreads autonomously
what is a trojan
malware installed on a computer disguised as desirable software
what is spyware
malware that collects data about activities on the computer, then sends it back to the attack investigator e.g. recording passwords entered
what is adware
malware that automatically renders unwanted adverts to generate revenue e.g. unclosable pop ups
what is phishing
obtaining sensitive info by disguising the message and/or link as a trustworthy source
can contain malware
what is social engineering
a form of attack that exploits the fact that often the weak points in systems by manipulating them to get info or access
what is a brute force attack
when al possible combinations are systematically tried with the hope of eventually getting it right
what is a denial of service attack
when a network resource becomes deliberately overloaded with unnecessary requests, preventing it from responding normally
what is an SQL injection
when an SQL command is entered as a user input on a website
what is encryption
the process of encoding data and making it secret so that only the authorised viewers can decrypt and read the data and third parties cannot.
network policies
acceptable use
disaster recovery - rules for when something goes wrong
backup policy
failover - if a piece of key hardware - e.g. server - sotps working a secondary back up device will take over the functionality to prevent network downtime
archiving
