Bitcoin is a digital currency without any central control. It was introduced 4 years ago today (3rd January 2009). 1 Bitcoin (BTC) is currently worth around $13. Last year Bitcoin grew considerably in market cap (now about $150 million) and popularity, with many organisations accepting Bitcoin as a form of payment.

As a software developer interested in security, the idea of a distributed digital currency with foundations in cryptography is fascinating. Read on if you want to find out more about Bitcoin or just have 5 minutes to spare.

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To get Administrator access on Windows (theoretically) you could plug in a USB hub with a virtual keyboard, USB mass storage and a random unknown device. The USB mass storage would have the payload you wanted to run in the form of a driver for the unknown device and the virtual keyboard would replay the keys needed to accept the warning messages about installing unsigned drivers.

More thoughts and comments about this over on the Hacker News discussion.