A Worm is a malicious software program that exploits vulnerabilities to infect and spread by making copies of itself. It can replicate without the need to attach itself to a host program. It is therefore not a Virus by definition, because a computer virus needs an active host program to be able to replicate.
Worm malware is often referred as a Computer Worm, but Worms can infect Mobile Devices like cell phones and tablets as well. They are a general Cyber Security threats.
How does a Worm Program work?
Because it is self-sufficient malware program, it is not dependant on specific actions by the user of the device to help it to spread. Its programming allows it to do so automatically and quickly. This is also a factor that differentiate a Worm from a Virus because a Virus needs the user to open the infected host file, or document for it to be able to spread.
The fact that a worm is self-replicating program may not sound very threatening, but this alone can do damage. By being unrestricted to make endless copies of itself, these copies can overwhelm the available resources on the devices that they infect.
The worm programs can also be designed “to carry payloads”. This type of worm can be designed to delete or encrypt files. It can also be designed to install a backdoor program. The backdoor program will then allow the designer of the worm access to the device and to gain control over the device and its system settings. Once they have access, they can then also steal confidential information and data.
How does Worm Malware spread?
Worms are designed to exploit vulnerabilities in networks and on computers and mobile devices.
The most common way for Worm malware to spread is by email. This is usually in the form of an attachment on and email. Once it is opened, it directs the device to a malicious website, which will then download the worm. It will then replicate onto the device and attempt to spread to other devices. In some cases, it can spread by sending emails to the email addresses in the address book of the infected device.
Designers of Worm malware are taking advantage of popular trends. Instant messaging and chat platforms on are also a popular way to spread Worm Malware.
Worms can also spread through networks.
How to protect your device against a worm attack.
- Be wary of any suspicious attachments.
- Ensure that the security features on your device are active and keep it updated.
- Install security software from a reputable brand like Norton, McAfee or Bitdefender. Security software will also detect and remove malware that is already on the device.