How many weak packets do I need to crack WEP?

Weak Scheduling Attack:

This is a tough question, based on probability: each packet may reveal one bit of the key, once in a few thousand times. You will need about a million data packets to be sure that the attack works. However, it has been done in less than 250,000

Bruteforce Attack:

The Bruteforce attack does not require any weak keys or captured traffic, however you will need a lot more CPU time to break a key using a bruteforce attack.

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