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The infographic shows 556 intercepted videos out of 100,000 intercepted communications, the majority of which are text messages and email.

So why aren't the terrorist evildoers hiding their few KB of text communications within multi-GB YouTube videos of cats and video games?

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USA claim AQ have been using stenography since the 90s:

http://usatoday30.usatoday.com/tech/news/2001-02-05-binladen...

Commercial companies then built tools to identify most common steg, and AQ adapted by writing their own algorithms - which turned out to be not very good:

http://edition.cnn.com/2012/04/30/world/al-qaeda-documents-f...

It still breaks down, because you need to pre-share the arrangement of how you will exchange information that is hidden in images.

That really puts into perspective how huge Yo app is a threat to national security. It's only a matter of time until the NSA is intercepting Yos, or at least capturing Yo metadata.

I bet a Yo takeover is coming within few months. Buying the company may cost less than hacking it...

already got a insider - http://www.theguardian.com/technology/2014/jun/23/yo-founder...

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