Corporate, Personal Secrets Revealed In Online Word Docs
from the what-have-you-written-lately? dept
A researcher from AT&T Labs is demonstrating just how easy it is to find confidential (either corporate or personal) information online with a simple test. He did some random online searches for word documents, downloaded them, and then looked at what data had been "deleted", but which the document still had hidden. Basically, the problem here is that most people don't realize just how much extra and "deleted" information programs like Word store. Microsoft claims that in the next version of Office they're going to have tools to help prevent this sort of thing.
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Two ideas come to mind:
(1) disable the fast-and-historical save options until the user specifically chooses to enable them; the oblivious user should be protected.
(2) when you save historical information, save it encrypted by default. The worst case is when the user can't unlock their own hidden historical data, which isn't all that bad. Encrypt to a machine+user specific metric, which automatically unlocks when opened by the same detected machine+user, or offer a more complete encryption path that encrypts according to a provided pki or simple password. Even WEAK encryption would be a big win here, but there are plenty of much stronger crypto standards *built into everyday operating systems*.
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here are the Microsoft articles on this
http://support.microsoft.com/default.aspx?scid=kb;EN-US;211209
http://support.microsoft.com/defau lt.aspx?scid=kb;EN-US;197978
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