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DoS or Denial of Service Attacks are one thing, but Amplified Denial of Service Attacks could threaten the internet itself. Tom Scott explains what they are.

More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott

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This video was filmed and edited by Sean Riley.

Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels