05/12/2025
FBI Issues Critical Warning about Outdated Wi-Fi Router Vulnerability
The FBI last week issued a critical warning to individuals and businesses about a surge in cyberattacks targeting outdated Wi-Fi routers. Cybercriminals are exploiting vulnerabilities in older, unsupported routers to install malware known as "TheMoon." This malware allows cyber actors to install proxies on unsuspecting victim routers and conduct cybercrimes anonymously.
The alert highlights that routers produced in 2010 or earlier are particularly vulnerable, especially if remote administration is enabled. Signs of infection include overheating, connectivity issues, unexpected configuration changes, and the appearance of unauthorized admin accounts.
The FBI recommends individuals and companies take the following precautions:
• If the router is at end of life, replace the device with an updated model if possible.
• Immediately apply any available security patches and/or firmware updates for your devices.
• Login online to the router settings and disable remote management/remote administration, save the change, and reboot the router.
• Use strong passwords that are unique and random and contain at least 16 but no more than 64 characters. Avoid reusing passwords and disable password hints.
• If you believe there is suspicious activity on any device, apply any necessary security and firmware updates, change your password, and reboot the router.
If you suspect your router has been compromised, the FBI recommends that you report the incident to the agency’s Internet Crime Complaint Center (IC3) at www.ic3.gov.
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