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MALWARE & RELATED CYBERSECURITY TERMS

Malware means malicious software — software intentionally designed to harm, disrupt, spy on, manipulate, or gain unauthorized access to a computer, device, application, or network.

1. DIRECT SYNONYMS / UMBRELLA TERMS

TERM	MEANING
Malware	Umbrella term for malicious software.
Malicious Software	The full expression from which the term malware is derived.
Malicious Code	Code designed to perform harmful or unauthorized actions.
Malicious Program	A software program created or modified for harmful purposes.
Malicious Application	An application that performs harmful, deceptive, or unauthorized activities.
Malicious Payload	The harmful component or action delivered by an attack.

2. SPECIFIC TYPES OF MALWARE

TYPE	FUNCTION / CHARACTERISTIC
Virus	Replicates by attaching itself to files or programs.
Worm	Self-propagates, often through networks or connected systems.
Trojan / Trojan Horse	Disguises itself as legitimate or useful software.
Ransomware	Restricts access to systems or data, commonly through encryption, and demands payment.
Spyware	Secretly monitors activity or collects information.
Keylogger	Records keystrokes, potentially capturing sensitive information.
Adware	Displays unwanted advertising; some variants can behave maliciously.
Rootkit	Designed to conceal malicious activity and maintain privileged access.
Backdoor	Provides unauthorized or concealed access to a system.
Bot / Botnet Malware	Enables compromised devices to be remotely controlled, often as part of a botnet.
Cryptojacker	Secretly uses computing resources for cryptocurrency mining.
Wiper	Malware designed primarily to destroy, overwrite, or erase data.

3. BROADER CYBERSECURITY TERMS

VULNERABILITY  →  EXPLOIT  →  MALWARE / MALICIOUS CODE  →  PAYLOAD  →  ATTACK  →  INTRUSION  →  COMPROMISE  →  DATA BREACH

TERM	CONCEPT
Vulnerability	A weakness or flaw that may be exploited.
Exploit	A technique, code, or mechanism used to take advantage of a vulnerability.
Payload	The action or malicious component delivered or executed during an attack.
Attack	An intentional attempt to compromise, disrupt, manipulate, or gain unauthorized access.
Intrusion	Unauthorized entry into a system, network, or environment.
Compromise	A condition in which a system, account, device, or data has been successfully breached or affected.
Data Breach	Unauthorized access to, disclosure of, or exposure of protected or sensitive data.
Data Exfiltration	Unauthorized extraction or transfer of data from a system.

4. TERMS FOR THE MALICIOUS ACTOR

Threat Actor — an individual or group capable of conducting malicious activity.

Attacker — a person or entity conducting an attack.

Cybercriminal — someone who conducts criminal activity using computers or networks.

Malicious Actor — a person, group, or entity acting with harmful intent.

Adversary — an opposing entity considered a security threat.

Intruder — an unauthorized party that gains access to a system or environment.

Operator — an entity controlling or directing malicious infrastructure or activity.

CONCEPTUAL DISTINCTION

Vulnerability = the weakness.

Exploit = the means of taking advantage of the weakness.

Malware = malicious software or code.

Payload = the harmful action/component delivered.

Attack = the overall malicious activity.

Compromise = the target has been successfully affected or breached.

Data Breach = unauthorized exposure/access to protected data.