News tagged with codebook

Guide to breaking cell phone security revealed

(AP) -- A German security expert has raised the ire of the cell phone industry after he and a group of researchers posted online a how-to guide for cracking the encryption that keeps the calls of GSM-standard cell phone users ...

Dec 30, 2009
4.8 / 5 (14) 1

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8,400+ terrorist attacks in 2012, new data shows

Although terrorism touched 85 countries in 2012, just three - Pakistan, Iraq and Afghanistan - suffered more than half of 2012's attacks (54 percent) and fatalities (58 percent), according to new data released today by the ...

Dec 20, 2013
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Explained: The Shannon limit

It's the early 1980s, and you’re an equipment manufacturer for the fledgling personal-computer market. For years, modems that send data over the telephone lines have been stuck at a maximum rate of 9.6 kilobits ...

Jan 19, 2010
4.5 / 5 (22) 5 | with audio podcast

How to Measure What We Don't Know

(PhysOrg.com) -- How do we discover new things? For scientists, observation and measurement are the main ways to extract information from Nature. Based on observations, scientists build models that, in turn, are used to make ...

Sep 10, 2009 feature
4.7 / 5 (24) 11

List of search results for codebook