Malicious software designed to damage, disrupt, spy on, or gain unauthorized access to computers and networks.
Malware is an umbrella term covering many types of harmful programs. Viruses attach themselves to legitimate files and spread when those files run. Worms spread on their own across networks. Trojans disguise themselves as useful software. Spyware and keyloggers secretly collect information, ransomware encrypts files and demands payment, and adware floods users with unwanted ads.
Malware commonly arrives through phishing emails, malicious downloads, infected USB drives, compromised websites, or unpatched software vulnerabilities. Signs of infection can include slow performance, unexpected pop-ups, or unfamiliar programs, though sophisticated malware is designed to stay hidden. Protection relies on regular updates, reputable endpoint security, cautious browsing and downloading habits, the principle of least privilege, and offline backups.
Protecting devices such as laptops, phones, and servers that connect to a network from malware, exploitation, and misuse.
KeyloggerSoftware or hardware that secretly records the keys a user types, often to steal passwords and other sensitive information.
PhishingA social engineering attack that uses fake emails, messages, or websites to trick people into revealing information or installing malware.
RansomwareMalware that encrypts or steals a victim's files and demands payment, usually in cryptocurrency, to restore access or prevent leaks.
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