A while ago I wrote that perhaps the greatest contribution the Bitcoin experiment will make to humankind is to teach you and me and our neighbors more about the realities of economics. And later I added that the Bitcoin experiment will also contribute to greater understanding of attack surfaces and online crime. Many of the ideas about how to mine Bitcoins, store Bitcoins, and trade with Bitcoins as a medium of exchange illustrate both the strengths and weaknesses of any other medium of exchange in a world full of human beings. Seeing the discussion of Bitcoins here on Hacker News reminds me of early online discussions in the 1990s of online payment systems such as PayPal, and the arguments beforehand that PayPal wouldn't have to invest a lot of time and effort (as it eventually did) building defenses against theft and fraud. If a weakness in a system is attached to a lot of money, the way to bet is to bet that someone will go looking for that weakness, even if you haven't thought of it.
This prompts a question for all the security-knowledgeable persons who participate here on Hacker News, a question once asked of the inventor of Pretty Good Privacy (PGP). How expensive do you think it would be for the United States National Security Agency (or a comparable organization from another national government) to crack a Bitcoin store, given that we know that some Bitcoin caches have already been cracked? And if the organization storing Bitcoin data held personal bank account data too, how attractive a target might it be to thieves?
This prompts a question for all the security-knowledgeable persons who participate here on Hacker News, a question once asked of the inventor of Pretty Good Privacy (PGP). How expensive do you think it would be for the United States National Security Agency (or a comparable organization from another national government) to crack a Bitcoin store, given that we know that some Bitcoin caches have already been cracked? And if the organization storing Bitcoin data held personal bank account data too, how attractive a target might it be to thieves?