2FA: What It Is, How It Works and When It Can’t Save You

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Bitcoin is the exception to a lot of rules, but there’s one universal truth even it can’t escape: Wherever there is money to be stolen, someone will try to steal it – and occasionally they will succeed. They will succeed because the tools we build are imperfect, certainly, but they will also succeed because we’re imperfect and we use those tools imperfectly or worse, not at all. Today I’d like to discuss one such tool: Two-factor authentication. [Read more…]

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Cold Storage: Part 3

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In previous installments, we’ve discussed the nature of cold storage and built a cold storage solution using an inexpensive netbook, Lubuntu and Electrum. Today we’re in the home stretch: We’ve built our new toy, we just need to learn how to use it. [Read more…]

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Cold Storage: Part 2

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Yesterday I posted part one¬†of my first ever multipart video series and I’m proud to announce that part two is now available. This time around, we’re actually building a cold storage system using a relatively inexpensive netbook, Lubuntu and Electrum. [Read more…]

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Cold Storage: Part 1

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There’s a local Bitcoin lunch I go to most Wednesdays. It’s about the sort of thing you’d expect, a good core group of regulars and a rotating cast of interested novices hanging around, sharing knowledge. What surprised me is that nearly all of these novices (and many of the regulars) have the same exact questions: What is cold storage, do I need it and how do I get it? [Read more…]

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ASICMiner Block Erupter Teardown

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All right, so less of a teardown and more of a “take off the one removable part and take pictures” but if I used the right words all the time you guys would never find my stuff on Google, right?

Regular readers are probably aware that a while back I received a couple of demo units from the good folks at ASICMiner, who are packaging their ASICs in these adorable little USB Bitcoin mining sticks. At that time I promised you all a teardown and while there’s been a bit of a delay, this is that teardown. [Read more…]

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