What Is Malware and How Does It Affect Your Computer?
Malware is any type of software that is designed to steal data, damage systems, or do other harm. It can be spread from one device to another via USB sticks, floppy disks, or the Internet. It can be downloaded onto personal devices and workstations, as well as into IoT devices that connect to corporate networks. Attackers use a variety of techniques to infect computers and networks with malware, including security bugs, exploiting naive users, and using vulnerabilities in third-party software plugins.
Computer viruses are among the simplest forms of malware. They hide snippets of their code inside other programs, and once those programs are executed, the virus can do its damage or spread to other executable files on the device. Other types of malware include Trojan horses, worms, logic bombs, and rootkits.
Almost every device connected to a network can be attacked by malware, from smartphones to IoT devices to office desktops. Attackers are motivated by a wide range of motives, from making money to stealing personal data or disrupting business systems.
Some of the most common uses of malware are extortion (encrypting data and demanding ransom for its release), corporate espionage, sabotage, and cyberwarfare. Some attackers even use malware to mine cryptocurrency by hijacking the computing power of infected machines.
Some warning signs of malware include a sudden loss of available disk space, a swell in Internet activity that doesn’t correlate with user behavior, and the appearance of new toolbars, extensions, or home pages on your browser. Malware may also send back and forth to an attacker’s command and control servers, which can cause a significant slowdown in your system.