1. BitPay. https://bitpay.com/
2. Android Security Vulnerability (2013). http://bitcoin.org/en/alert/2013-08-11-android
3. Becker, J., Breuker, D., Heide, T., Holler, J., Rauer, H.P., Böhme, R.: Can we afford integrity by Proof-of-Work? Scenarios inspired by the bitcoin currency. In: Böhme, R. (ed.) The Economics of Information Security and Privacy, pp. 135–156. Springer, Heidelberg (2013)
4. Bitcoin Forum. List of Major Bitcoin Heists, Thefts, Hacks, Scams, and Losses. https://bitcointalk.org/index.php?topic=83794
5. Bitcoin Forum. CoinJoin: Bitcoin privacy for the real world (2013). https://bitcointalk.org/index.php?topic=279249.0