The type of malware that disguises itself as legitimate software is known as trojan malware. Trojans can appear as harmless programs or files, tricking users into downloading or executing them. Once activated, they can steal sensitive information, create backdoors for attackers, or initiate other forms of cyberattacks. Unlike viruses, trojans do not replicate themselves but rely on user interaction to spread. Awareness of this malicious software is crucial for maintaining cybersecurity and protecting personal data.