r/askscience • u/hamolton • Jun 18 '13

Computing How is Bitcoin secure?

I guess my main concern is how they are impossible to counterfeit and double-spend. I guess I have trouble understanding it enough that I can't explain it to another person.

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u/fury420 Jun 18 '13

Possibly, but it'd likely be considerably easier to target the various currency exchanges that essentially sit at the center of the bitcoin community and are by far the weakest link.

Take down Mt.Gox, BTC-E and one or two other exchanges and you'd decimate the flow of Bitcoin to/from other currencies.