In the latest OT & IoT Security Report from Nozomi Networks Labs, an analysis of more than 500,000 wireless networks worldwide found only 6% are adequately protected against wireless deauthentication attacks. This means most wireless networks, including those in mission-critical environments, remain highly exposed to downtime and other threats associated with such attacks.
According to Nozomi Networks Labs, deauthentication attacks exploit weaknesses in network protocols to force devices off the network, disrupting operations and potentially paving the way for further attacks. They leverage a built-in feature in the Wi-Fi protocol, specifically in the management frames used for communication between devices and access points. By transmitting fake deauthentication frames, attackers can force devices to disconnect from the network. This can escalate into more severe disruptions, such as data interception and unauthorized access, especially when combined with additional malicious actions.
The report says that to be adequately protected against deauthentication attacks organizations require the implementation of Management Frame Protection (MFP). Three actions that can be taken are:
- Enable 802.11w (MFP), which is essential for defending against deauthentication attacks. This standard adds encryption to management frames, making it significantly harder for attackers to forge deauthentication messages and disrupt the network.
- Upgrade to WPA3, which provides enhanced security features, including Protected Management Frames (PMFs). This protocol helps to protect against deauthentication attacks and ensures a more robust defense against wireless threats.
- Regularly monitor wireless networks for signs of suspicious activity. By scanning for devices conducting deauthentication attacks or other disruptive behaviors, organizations can quickly identify and respond to threats.
