The main reason Skype included high-level encryption wasn't a fear of wiretapping, says a spokesman for the Estonian programmers.

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Cubby is built on LogMeIn's own cloud data sync and storage service - not hosted on a third party cloud data platform - and takes advantage of the same online-banking-level encryption capabilities used in LogMeIn's connectivity offerings (like LogMeIn Free and Pro, LogMeIn Rescue and join.me).

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After the experiment in the Cambridge cafe, the owners switched to a higher level of encryption for their network, making it impossible to use Firesheep.

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"Today, we don't have the level of encryption that we would need to take (a phone) overseas and fully integrate it into our mission-command systems, " Mazzanti said.

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