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Tempest, tempâpest, n. lit. a portion of time, a season, then weather, bad weather; wind rushing with great velocity, usually with rain or snow; a violent storm ; any violent commotion. [L. tempestas, a season. tempestâtempus, time]

Tempest was the name of a classified (secret) U.S. government project to study Â the susceptibility of some computer and telecommunications devices to emit electromagnetic radiation (EMR) in a manner that can be used to reconstruct intelligible data. Tempest's name is believed to have been a code name used during development by the U. S. government in the late 1960s, but at a somewhat later stage, it became anÂ acronym for Telecommunications Electronics Material Protected from Emanating Spurious Transmissions. 
https://searchsecurity.techtarget.com/definition/TempestÂ 
In 2011, a group of young students discovered a new meaning of Tempest that had remained hidden for 200 years. This is their story ...

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To find out how to register and take part read the rest of this article, and the info on the rules page. You can find out more on the resources page too.

Read more: What do you need to do?

Welcome to the new web site of the University of Southampton National Cipher Challenge. The official 2011 Challenge will start at 3.15 on September 29^th, and you can register online from September 14^th. If you have an account from last year you can carry on using it, but we have deleted the info about who is on which team as we suspect some, maybe most, of the teams will change. As before if you want to enter on your own you only need an account, and if you want to invite someone to join in with you you can do so by using the Team Builder tab in your user profile. Good luck!

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Tempest

What do you need to do?

Cipher Challenge 2011