Wireless DoS attacks can be the result of:

To minimize the risk of a DoS attack due to improperly configured devices and malicious attack, harden all devices, keep passwords secure, create backups, and ensure that all configuration changes are incorporated off-hours.

Accidental interference only happens when another wireless device is introduced. The best solution is to monitor the WLAN for any interference problem and address them as they appear. Because the 2.4 GHz band is more prone to interference, the 5 GHz could be used in areas prone to interference. Some WLAN solutions enable APs to automatically adjust channels and use the 5 GHz band to compensate for interference. For instance, some 802.11n/ac/ad solutions automatically adjust to counter interference.

The figure illustrates how a cordless phone, or even a microwave, can interfere with WLAN communication.

The Cisco CleanAir technology enables devices to identify and locate non-802.11 interference sources. It creates a network that has the ability to adjust automatically to changes in its environment.