Cyber Security by David Sutton

Author:David Sutton [Sutton, David]
Language: eng
Format: epub, mobi
Publisher: BCS Learning and Development Ltd
Published: 2022-01-15T00:00:00+00:00

Wireless network attacks

Cyber-attacks that use wireless connectivity can generally be in one of three areas:

cyber-attacks on a Wi-Fi (802.x) infrastructure;

cyber-attacks on a Bluetooth infrastructure;

cyber-attacks on the Global System for Mobile Communications (GSM), third generation (3G), fourth generation (4G) and fifth generation (5G) cellular mobile infrastructure.

Wi-Fi attacks

Wi-Fi attacks are extremely common and can usually be conducted in one of two ways. The more difficult approach is for the attacker to intercept the signal of a wireless access point, to store the intercepted data, and to attempt to recover the access key by ‘brute force’ searching. Those access points that only have WEP or the original WPA encryption will be much easier to break into than those with WPA versions 2 and 3.

The second (and often more straightforward) method is for the cyber-attacker to introduce their own access point with an SSID similar or identical to that of a genuine access point, for example in any public space offering ‘free’ Wi-Fi. When an unsuspecting user tries to connect, and gives their access key, the attacker’s computer will capture the data and the attacker will be able to access the real network as if they were a genuine user. Further, if the attacker is even more skilled, they will allow the user’s computer to make an onward connection to the real network, creating a ‘man-in-the-middle’ attack. The attacker can now monitor the user’s application login details, providing the attacker with access to at least one system within the organisation, from which they may be able to access other systems, or even find they have administrative access.

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