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John is planning on upgrading his BIOS. What is the most important step to take before upgrading the BIOS?
Make a note of all the BIOS settings.
Harriet has just switched on her system and opened a Word document. Unprompted, her computer suddenly connects to the Internet. What kind of attack is this a symptom of?
(a) An ACK attack
(b) A worm
(c) A logic bomb
(d) A virus
- (c) A logic bomb.
- - Harriet's computer is exhibiting symptoms of a logic bomb. A logic bomb notifies an attacker when a certain set of circumstances has occurred. This triggers an attack on the system.
What is a logic bomb?
A logic bomb is a piece of code intentionally inserted into software with the intention of setting off a malicious function when specified conditions are met or at a specific time. Other malicious types of software, such as viruses and worms, often contain logic bombs. For example, a virus may be set to attack host systems on a specific day.
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