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Disguises itself as legitimate software to trick users into executing it. Unlike viruses and worms, it does not replicate itself. Example: Zeus Trojan.

Malware that encrypts the victim's files and demands payment for the decryption key. Example: CryptoLocker.

Designed to spy on the user's actions without consent and report back to the author. It can steal sensitive information. Example: CoolWebSearch.

A network of private computers infected with malicious software and controlled as a group. Example: Mirai Botnet.

Software tools that run on servers and identify vulnerable computers to spread malware. Example: Angler Exploit Kit.

A type of malware that attaches itself to clean files and spreads to other files. It can only spread when the infected file is executed. Example: ILOVEYOU virus.

Records the user's keystrokes on a keyboard and transmits this information to a malicious party. Example: HawkEye Keylogger.

Automatically delivers advertisements. It can be intrusive and sometimes covertly installed. Example: Adware.BrowseFox.

A type of malicious activity that uses native, legitimate tools built into a system to execute a cyber attack. It leaves no footprint and is memory-based. Example: APT38’s fileless attack.

A small piece of software that installs a malware payload onto a target system. Example: StarDust Dropper used to spread the Stardust botnet.

A malicious program that is triggered by a specific event or condition, such as a date. Example: The triggered event of a logic bomb in Da Vinci Virus.

Masquerades as legitimate security software and claims that the computer is infected with viruses, tricking the user into paying for fake removal tools. Example: WinFixer.

Malware that spreads across networks and devices without needing to attach itself to a host file. It exploits vulnerabilities or uses trickery to copy itself onto other computers. Example: WannaCry.

Malware that bypasses normal authentication procedures to access a system, allowing remote control of the computer. Example: Back Orifice.