How Malware Works
Malware is software designed to exploit devices for the benefit of its creator, and that’s why it poses a threat to anyone with a device connected to the internet. There are many different types of malware, and they’re spread through a variety of means including phishing attacks, compromised websites, malicious attachments, and rogue apps.
Some of the most notorious forms of malware include viruses, worms, ransomware, spyware, bots and adware. While they share some characteristics, each type of malware functions differently.
For example, a virus can hide in an executable file on a computer until it is activated and replicates itself, spreading from one program to another within the same system or among multiple systems. A worm, on the other hand, exploits vulnerabilities in operating systems to automatically spread from computer to computer.
Regardless of how they’re deployed, most malware is designed to do the following:
Intelligence gathering: Attackers use spyware to record keystrokes, access web cameras and microphones, and capture screenshots. This information can be used to steal passwords, usernames and payment details. Destruction or vandalism: Logic bombs hidden in programs can remain dormant until a certain condition is met, at which point they destroy files or disrupt systems.
Malware can also steal computer resources and rob users of their computing power by running a cryptomining program (cryptojacking). It’s important to understand how malware works so you can protect yourself from these dangers. If you’re experiencing frequent system crashing or blue screens, or see popup ads that aren’t related to the websites you’re visiting, you may have malware.