Two types of requests are anticipated to be the most frequent: first, a specific request for a data item using its associated map symbol as a lookup key; and second, general requests for unspecified metadata associated with a data item.
Metadata associated with the malicious code used by Fancy Bear suggests a point of origin.
"The second is that it has more of these rings of metadata associated with it.
For example, tools like P.G.P. don't encrypt the "metadata" associated with e-mails — stuff like dates, e-mail addresses, and even subject lines.
The agency, the memo noted, already had "in its databases a large amount of communications metadata associated with persons in the United States".
Facebook disclosed that during the first half of 2013, it turned over content data from between 5000 and 5999 accounts – a rise of about 1000 from the previous six month period – and customer metadata associated with up to 999 accounts.
The procedures "would clarify that the National Security Agency NSAA) may analyze communications metadata associated with United States persons and persons believed to be in the United States", Wainstein wrote.
Eventually, the NSA gained authority to "analyze communications metadata associated with United States persons and persons believed to be in the United States", according to a 2007 Justice Department memo, which is marked secret.
It compares the "metadata" associated with the image against a database of signatures that represent the characteristic ways in which different devices capture and compress image data, to ensure that the image is what it claims to be.
When you pop a CD into your computer, your music player displays metadata associated with the files on the disc: usually the artist, the album title, the track titles, the date of issue and not much else.
The memo said: The Supplemental Procedures, attached at Tab A, would clarify that the National Security Agency NSAA) may analyze communications metadata associated with United States persons and persons believed to be in the United States…We conclude that the proposed Supplemental Procedures are consistent with the applicable law and we recommend that you approve them.
