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Wireless & Mobile

WEP

Wired Equivalent Privacy

An obsolete, easily broken Wi-Fi encryption standard.

WEP was the original Wi-Fi encryption scheme and is now thoroughly broken because its short initialization vectors repeat and leak key material, allowing recovery of the key after capturing enough traffic. It relies on the weak RC4 cipher and offers no real protection today. It should never be deployed, and its failure drove the move to WPA and then WPA2 with AES-based CCMP. On the exam it is the canonical example of a deprecated, insecure protocol.

Memory hook

Wired Equivalent Privacy: the broken original (weak RC4 plus a tiny IV). Think "Weak, Easily Penetrated."

Related terms

Looking WEP up is step one. Getting tested on it is step two.

A free account opens all 4 Domain 1 objectives, 271 exam-style questions with a lesson and a lab on each, a placement check that skips what you already know, and a dated plan. No card.

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