Malware Types Flashcards

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Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is malware?

Software made to harm a computer or data. It can steal, damage, or disrupt.

Malware that attaches to files or programs and spreads when you run them.

A worm spreads by itself across networks without a host program. It can spread fast and slow or crash systems.

Malware that looks like a useful program but hides harmful actions. It tricks users into installing it.

It secretly watches what you do on a device. It can collect data like websites visited or passwords.

A type of spyware that records every key you press. It can send your typed data to an attacker.

Software that shows unwanted adverts on your device. Some adware also tracks you to show targeted ads.

Malware that locks your files or device and demands money to unlock them. It often uses encryption.

Malware that hides deep in the system to avoid detection. It lets attackers keep control with admin rights.

A group of infected computers controlled by an attacker. Malware turns devices into bots to send spam or attack others.

Malware that shows fake warnings to scare you into installing software or paying money. The “fix” is often more malware.

Malicious code that runs when a set condition is met, like a date. It then deletes or damages data.