The document is about different types of malware including viruses, spyware, ransomware, bots, rootkits, Trojan horses, worms, and adware. It states that a virus is a type of malicious software that infects files and replicates itself. Once executed, it infects files and copies itself in a way to spread. Some of the most well-known viruses mentioned are spyware, ransomware, bots, rootkits, Trojan horses, worms, and adware.

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I N F O R M AT I C I

2. U N V I R U S ,
I N I N F O R M A T I C A
È U N S O F T W A R E
A P P A R T E N E N T E
A L L A C A T E G O R I A
D E I M A L W A R E
C H E , U N A V O L T A
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I N F E T T A D E I F I L E
I N M O D O D A F A R E
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3. I V I R U S P I Ù
C O N O S C I U T I
S O N O :
• S P Y W A R E
• R A N S O M W A R E
• B O T
• R O O T K I T
• T R O J A N H O R S E
• W O R M
• A D W A R E