What Is Malware and How Does It Affect Your Computer?
Malware, short for malicious software, is any type of code or software designed with a harmful intent to harm other systems or devices. This broad definition includes ransomware, worms, Trojan horses, spyware and other malware threats. Cybercriminals use malware to steal and contaminate sensitive information or to attack a computer, system, server or network.
The goal of most types of malware is to make money. That might mean stealing account credentials or financial data, encrypting files to demand a ransom payment or selling access to computer programs on the dark web. Attackers may also use malware to spy on a victim’s device or online activities or to gain control over a targeted system to launch additional attacks.
Often, malware is delivered via phishing or tricking users into clicking links or opening attachments in emails or other communications. Other methods include USB or other removable media schemes and exploiting hardware or system vulnerabilities. A popular example of malware is an evil twin, a copy of a legitimate program that has been altered to install malicious software when accessed or run. Another type of malware is a logic bomb, which stays dormant until certain conditions are met and then carries out its malicious function.
Some symptoms of malware infection include a sudden loss of disk space or unusually slow device or computer performance. You may also notice popup ads or suspicious activity on your social media accounts or email inbox. If you think you might have a malware infection, take immediate action.