What type of malware is indicated if an internal computer is launching attacks on other computers?

In this scenario, the correct answer indicates that a Trojan is involved when an internal computer is launching attacks on other computers. Trojans are known for disguising themselves as legitimate software or files to trick users into executing them. Once activated, a Trojan can create backdoor access to the infected system, allowing attackers to control the machine and use it to launch various types of attacks on other systems.

The behavior described in the question, where an internal system is being used to attack others, aligns with the typical functionality of a Trojan, as it may be part of a botnet controlled by an attacker. The Trojan can execute commands remotely, compromise user data, or spread malware to other machines on the network.

In contrast, other types of malware like viruses, ransomware, and worms have distinct characteristics or methods of operation. Viruses generally need human interaction to spread, ransomware encrypts files for extortion, and worms are self-replicating and spread across networks without requiring user intervention. Therefore, analyzing the use of the internal computer actively attacking others reflects Trojan activity due to its capability to allow external control and malicious actions.