I ran across a (new?) company, Authentica, that's fielding a security model for email, web pages and documents. The mail product, MailRecall, uses a plugin that fetches a key lease for each received message and restricts access based on the properties of the lease. Their website, http://www.authentica.com, has little to no real information about the actual crypto or key protocols used. Anyone heard about this? Thoughts on its usefulness? On a similar note, I had run across http://www.safedepositbox.com a few weeks ago and actually sent email asking what they were using to protect stored documents. The website was pretty vague, and the response was about the same. The flack blathered on about not sharing that information outside their NDA'd "Trusted Partners", though he assured me they used "industry standard" protocols.