Wireless Network Security Issues

There are three common security threats in WLAN

Denial of Service

A denial of service attack crowds the radio channel by sending out de-authentication or dis-association packets to prevent clients from connecting to the AP and accessing the network. An RF jammer is a tool typically used to jam the radio channel, so valid clients won’t be able to access the network. Rogue clients can also spoof the SSID and AP to de-authenticate or dis-associate legitimate clients.

Passphrase or Password Cracking

Hackers can sniff or eavesdrop over-the-air traffic to crack the PSK passphrase of an SSID and access the network. They can also break user credentials to change settings as an admin or access unauthorized resources as authorized users.

Data Breach

By spoofing a legitimate SSID or AP, hackers can leverage the rogue spoofing AP to collect user data. Common threats are from man-in-the-middle or evil twin attacks.