Reputation laundering in cybersecurity refers to a tactic where malicious software or threat actors behave in a seemingly legitimate manner for a certain period. This strategy is designed to build trust, evade detection systems, and avoid suspicion from security tools and analysts. By mimicking normal or benign activities, the malware or attackers gradually establish a positive reputation within the target environment. Once trust is gained and security measures are relaxed, the attackers can then execute their malicious objectives, such as data theft or system compromise, with a reduced risk of being caught. This technique complicates traditional security defenses that rely on reputation-based detection.