It is a type of malware that spreads copies of itself from computer to computer. It can replicate itself and doesn't have to attach itself to a program to cause damage. But how do computer worms work? They can arrive as attachments or be transmitted through software vulnerabilities. When they are opened, they may provide a link to a malicious website or it could even automatically download the computer worm. Once it’s installed the worm goes to work and infects the machine without the user's knowledge.
Worms modify and delete files and add malicious software onto a computer. A worm's purpose is only to make copies of itself over and over which in turn depletes system resources. Worms can also steal data, install a backdoor, and allow a hacker to gain control over a computer and its system settings.
So, with this knowledge how can you tell if your computer has a worm? See below:
- Monitor your computers speed and performance because if your computer seems sluggish or your programs are crashing this is a great sign something may be wrong.
- When worms replicate themselves, they fill up the free space on your computer's hard drive, this is also something to watch for.
- Had some files that were there yesterday and today they are gone? Well this is something worms do, deleting and replacing files on your computer.
With a general idea of what worms do, and what signs to look out for, what can be done to protect your computer against computer worms? Try these steps:
- Make sure you have strong internet security software that blocks these threats with anti-phishing technology, defences against viruses, ransomware and spyware.
- Be cautious if you receive an email from an unknown sender that has attachments or suspicious links.
- Check that your operating system and any apps are up to date and remember to check for patches for security flaws.
Be sure to follow these steps to make sure you don't fall victim to computer worms.