How to Secure RMM Tools Like ScreenConnect Against Attacker Abuse

Remote monitoring and management (RMM) tools such as ScreenConnect are increasingly exploited by attackers because they are trusted by default, run with high privileges, and rarely flagged by traditional antivirus software. Cybersecurity experts warn that compromising a single RMM credential can give an attacker persistent, wide-ranging access across an organization without needing custom malware. Key warning signs of abuse include unfamiliar RMM software appearing on endpoints, sessions outside normal support hours, unexpected installs on servers, and rapid deployment across multiple machines. Recommended defenses include scoping user permissions to the minimum required, separating RMM admin accounts from everyday credentials, requiring approval for new device enrollment, and auditing standing access at least quarterly. Security professionals advise treating RMM software as a privileged access path rather than a routine application, and flagging any install that cannot be immediately attributed to a known user or task.