The recent stabbing attack at the college in Texas brings attention to self defense issues surrounding edged weapons.
Some form of edged weapon have been around since the stone age. One of the most known incidents involving box cuters was the events of September 11th. A box cuter is basically a small knife.
It is important to know how to defend yourself against edged weapons.
One of the training programs I do deals with that issue.

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Click here to see more on this story at CNN.
http://www.cnn.com/2013/04/09/justice/texas-college-stabbing/index.html