Understanding Computer Viruses and Malware

The video discusses the vulnerabilities of computers to various types of malware, including viruses, worms, ransomware, and Trojans. It highlights specific examples like the Chernobyl virus, Code Red worm, Cryptolocker ransomware, Bakasoftware Trojan, and Stuxnet digital weapon. Each type of malware is explained in terms of its operation, impact, and historical context. The video concludes with advice on avoiding malware and emphasizes the importance of using legitimate antivirus programs.

What is the primary function of a computer virus?

• To enhance computer performance

• To spread to multiple computers and cause harm

• To protect against malware

• To improve internet connectivity

What was unique about the Chernobyl virus?

• It was the first virus to spread via email

• It was the first virus to use Bitcoin

• It could physically damage computer hardware

• It was harmless to Windows 98 users

How did the Code Red worm spread to computers?

• Through social media links

• Through email attachments

• By exploiting a vulnerability in Microsoft’s IIS

• Via USB drives

Which type of malware is known for spreading without needing a host program?

• Trojan Horse

• Ransomware

• Worm

• Adware

What is the main goal of ransomware like Cryptolocker?

• To install antivirus software

• To encrypt files and demand a ransom for decryption

• To improve computer speed

• To delete all files on a computer

What was the main method of distribution for Cryptolocker?

• Through direct downloads from websites

• By physical USB drives

• Via social media

• Through a botnet

What was the outcome for users who paid the Cryptolocker ransom?

• They always got their files back

• They never got their files back

• They sometimes got their files back

• Their computers were permanently damaged

What is a Trojan Horse in the context of computer malware?

• A virus that spreads through email

• A program that disguises itself as legitimate software

• A type of ransomware

• A worm that infects servers

What was the strategic purpose of the Stuxnet virus?

• To disrupt Iranian nuclear development

• To slow down internet speeds

• To encrypt files for ransom

• To steal personal data

Why is Bakasoftware difficult to remove from infected computers?

• It encrypts all files

• It spreads across multiple locations on the hard drive

• It deletes system files

• It requires a special tool to uninstall