Malicious software

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Virus

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A self-replicating program that attaches itself to other files and spreads from one device to another.

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Trojan

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A hidden program that appears as legitimate software but performs malicious actions.

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Worm

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A self-replicating program that spreads through networks and causes damage to computer systems.

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Ransomware

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A type of malware that encrypts a user's files and demands payment for the decryption key.

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Adware

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A type of software that displays unwanted advertisements.

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Spyware

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A program that collects and sends personal information from a user's device without their knowledge.

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Rootkit

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A type of malware that is designed to hide its presence and give attackers full control over the infected device.

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Data theft

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Stealing personal information or confidential data.

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System disruption

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Disrupting the normal functioning of a device or network.

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Spamming

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Sending unsolicited emails or messages.