In connection with encryption modes and WLAN passwords, the question is often asked about the restriction of WLAN to devices with specific MAC addresses. The safety gain by this measure is not very large, but the comfort disadvantage is noticeable. Any serious attacker would monitor network traffic for a while to find the MAC addresses of active devices.
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If devices such as smartphones become inactive because they are out of range or sleep, the attacker can hijack their MAC address. MAC locks make it difficult for attackers to work, they do not prevent burglaries.
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