US National Security Agency (NSA) has been tracking bitcoin users
Some news about on on the NSA tracking BTC users, according to Edward Snowden papers
National Security Agency keeping tabs on bitcoin users globally
- Report from March 2013
- cataloging and cross-referencing of data that ultimately helped them to "track down the senders and receivers of bitcoins"
- NSA called its bitcoin spying project Oakstar
- Initial focus of the mission was counterterrorism-focused
- NSA appear to have been monitoring groups that were using the level of anonymity allowed by bitcoin transactions for clandestine purposes, such as money laundering activities