The publication, Guide to Bluetooth Security (NIST Special Publication 800-121 Rev. 1), is a revision of the original guide released in September 2008.
A draft version of the revised document was released for public comment in October 2011. The final version reflects these comments, which recommended no significant changes other than minor technical corrections and rewordings to the draft text.
The Guide to Bluetooth Security describes the security capabilities of technologies based on Bluetooth, an open standard for short-range radio frequency communication and gives recommendations to organizations on securing their Bluetooth devices effectively.