A computer worm is a type of virus that can replicate itself and spread from device to device.
Worms don't need to attach themselves to a software program in order to cause damage.
Worms can be transmitted via software vulnerabilities, or through attachments or links in spam emails. These links can send the user to a malicious website, or even automatically download the computer worm. Once it’s installed, the worm silently goes to work and infects the machine without the user’s knowledge.

Worms can modify and delete files, inject additional malicious software, and deplete system resources such as hard drive space or bandwidth. They can also steal data, install backdoors, and give bad actors control over the device and its system settings.

How to tell if your computer has a worm:
Run a virus scan - even if the scan comes up negative, you can still be proactive in detecting any malicious activity i.e.
- by taking note of your hard drive space - when worms repeatedly replicate themselves, they start to use up the free space on your computer.
- by monitoring speed and performance - if your computer is working more slowly than normal, or programs are crashing or not running properly, there could be a worm using up processing power.
- by keeping an eye out for missing or new files - a worm will delete and replace files

How to protect against worms:
- Update your computer’s operating system and applications with the latest versions and patches.
- Be wary of phishing: exert caution when opening emails from unknown senders.
- Invest in an excellent antivirus such as RAV Antivirus, that can help block the threat of worms.

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