The Caffe Latte attack debunks the age old myth that to crack WEP, the attacker needs to be in the RF vicinity of the authorized network, with at least one functional AP up and running. We demonstrate that it is possible to retrieve the WEP key from an isolated Client - the Client can be on the Moon! - using a new technique called "AP-less WEP Cracking". With this discovery Pen-testers will realize that a hacker no longer needs to drive up to a parking lot to crack WEP. Corporations still stuck with using WEP, will realize that their WEP keys can be cracked while one of their employees is transiting through an airport, having a cup of coffee, or is catching some sleep in a hotel room. Interestingly, Caffe Latte also has a great impact on the way Honey-pots work today and takes them to the next level of sophistication.