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Sources of virus
Boost Bits
The Morris Worm, released in 1988, infected 6,000 computers and almost crashed the early
Internet, leading to the creation of the first Computer Emergency Response Team (CERT).
HOW DO YOU KNOW YOUR PC HAS A VIRUS?
An infected computer system may:
Display unusual messages on the screen. Just as rust weakens and
Load programs more slowly. damages a bridge, a virus
weakens and damages the
Take longer to shut down.
functions of a computer.
Increase the size of infected files.
Automatically change file names or types.
HOW TO PREVENT YOUR PC FROM A VIRUS?
To prevent your PC from getting a virus:
Download only legal software from trusted sources.
Avoid opening emails from unknown senders.
Don’t open email attachments unless you know the sender.
Don’t download music, programs, or games from unfamiliar websites.
Install and use antivirus software on your computer.
Scan pen drives, CDs, and other external storage devices for viruses before using them on
your PC.
MALWARE
Malware is a malicious program designed to damage or perform unwanted actions on a
computer. The term "malware" combines "malicious" and "software," where "mal" comes from
the Spanish word for "bad," making it easier to remember as "badware."
There are various types of malware that can harm your computer similarly to a virus, including
worms, trojan horses, spyware, ransomware, rootkits, and backdoors.
Worms
Worms are a type of malware that replicates itself without human intervention. They use significant
memory space while replicating, which can cause a computer to slow down, behave unpredictably,
and disrupt other tasks. Worms spread from one computer to another through their replication
process.
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