OK techie friends, help me out... what's a "digital signature"?http://www.nytimes.com/2016/10/06/technology/yahoo-email-tech-companies-government-investigations.html?_r=0 …
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Do you read anything into Charlie describing it as a digital signature "of a communication method"? (Not of a user/account/server)
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Sub-strings from base-64 encoded email attachments (derived from things like embedded corporate logos), and any uncommon...
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...artifacts arising from a target's tooling, for example if their app transmits a UUID (like a registration code or serial).
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The possibilities here are basically limitless, and we can't infer the specific nature of the string without more info.
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Big legal issue is whether scan included content or not. Do we need more info on the string to answer that Q?
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To clarify last question: are there digital signatures that could be found scanning only headers?
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Yes, but rare, and would raise questions of if it's truly unique vice uncommon. Mostly MUA related: http://forensicswiki.org/wiki/Email_Headers …
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do you feel that this new
#Yahoo revelation is worse/more extensive than the NSA metadata program?
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Have a hard time seeing "usual suspects" fit here given unique use; 702 About collection proves nontargets use thosepic.twitter.com/e0CDEUgMJa
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Here they'd need probable cause that the codewas not being used by anyone else; that sounds like digital signature
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The fact that the CIA is in possession of so many data, makes me doubt even more of trusting those presidential candidates.
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so you don’t think it was hashes in some way? Interpol runs db with hashes for known CP files http://www.interpol.int/News-and-media/News/2015/N2015-041 …
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