What Is Malware and How Does It Affect Your Computer?
Malware, or malicious software, is an umbrella term for a variety of programs that attack computer systems. These programs are designed to perform a variety of functions, including stealing information from users and causing damage to a system.
Cybercriminals use malware to steal personal information, lock up devices, encrypt files and data, and sabotage devices. Some forms of malware are also used in corporate espionage and cyberwarfare.
While viruses are the most common form of malware, other types of malicious software exist. These include adware, Trojans, and botnets. Adware collects personal data, such as browsing and download history, and uses this information to generate revenue for the developer.
Spyware, another type of malware, watches user activity and records keystrokes. It may also attempt to download more malicious software.
Malware can spread when users visit infected websites or click on links sent in email. It can also spread through file sharing or peer-to-peer file sharing services. Several types of worms can infect computers without actually running the program. Worms replicate themselves to create a network of infected machines. The worms often remain active on all infected machines.
The Conficker worm, one of the first malware examples, took advantage of several attack vectors, including unpatched vulnerabilities in Windows. In turn, it was the catalyst for the creation of the world’s first antivirus tool.
Malware has become increasingly complex. Today, threat actors are using remote administration tools to gain administrative control of infected systems.