In cybersecurity, a worm is a type of malware that can replicate itself and spread across devices within a network. Worms can self-replicate automatically and spread by using automatic file sending and receiving features that have been enabled, intentionally or not, on network computers. Once a worm has infected a computer, it installs itself in the device’s memory and can then transfer itself to other machines. Worms can modify and delete files, and they can even inject additional malicious software onto a computer. Sometimes a worms purpose is only to make copies of itself over and over, depleting system resources, such as hard drive space or bandwidth, by overloading a shared network. Worms can also steal data, install a backdoor, and allow a hacker to gain control of the infected device. To prevent the threat of computer worm infections, good cybersecurity hygiene is essential. The following measures can help prevent computer worm infections:
- Install operating system updates and software patches.
- Use firewalls to protect systems from malicious software.
- Use antivirus software to prevent malicious software from running.
- Never click on attachments or links in emails or other messaging applications that might be malicious.
