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Year Number of 802.11 packets required to crack WEP
2001 – 2004 5-10 million  (FMS attack)
2004 – 2007 500k (unique IVs) on average for 128-bit WEP  (Korek attack)
2007 – 2008 40k (ARP packets) using the PTW attack
2008 – Present 25k (replayed packets)  using the ARP replay and/or chopchop replay, with combined PTW+Korek analysis

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