The Washington Post is out with the latest revelations from the Snowden leaks and it shows that the NSA relies on foreign telcos and "allied" intelligence agencies to scoop up data on email contact lists and instant messaging buddy lists to help build its giant database of connections. Remember a few weeks ago how it was reported that the NSA was basically building a secret shadow social network? It seems like this might be one of the ways it's able to tell who your friends are.
There are a variety of important points here. First off, this information is not coming directly from the tech companies (which, again, suggests that earlier claims that the NSA had direct access to all their servers was mistaken). Rather they're picking this information up off the backbone connections in foreign countries. It also explains why they get so much data from Yahoo -- because, for no good reason at all, Yahoo hasn't forced encryption on its webmail users until... the news of this started to come out.
And here's the big problem: because all of this information is collected overseas, rather than at home, it's not subject to "oversight" (and I use that term loosely) by the FISA court or Congress. Those two only cover oversight for domestic intelligence. The fact that the NSA can scoop up all this data overseas is just a bonus.
Also, while the program is ostensibly targeted at "metadata" concerning connections between individuals, the fact that it collects "inboxes" and "buddy lists" appears to reveal content at times. With buddy lists, it can often collect content that was sent while one participant was offline (where a server holds the message until the recipient is back online), and with inboxes, they often display the beginning of messages, which the NSA collects.
Separately, because this is allowing them to gather
so much data, it apparently overwhelmed the NSA's datacenters. At times, this is because they get inundated with... spam. For example, one of the documents revealed show that a target they had been following in Iran had his Yahoo email address hacked for spamming, and that presented a problem:
In fall 2011, according to an NSA presentation, the Yahoo account of an Iranian target was “hacked by an unknown actor,” who used it to send spam. The Iranian had “a number of Yahoo groups in his/her contact list, some with many hundreds or thousands of members.”
The cascading effects of repeated spam messages, compounded by the automatic addition of the Iranian’s contacts to other people’s address books, led to a massive spike in the volume of traffic collected by the Australian intelligence service on the NSA’s behalf.
After nine days of data-bombing, the Iranian’s contact book and contact books for several people within it were “emergency detasked.”
Because of this mess, the NSA has tried to stop collecting certain types of information, doing "emergency detasks" of certain collections. This, yet again, shows how ridiculous Keith Alexander's "collect it all" mantra is. When you collect it all, you get inundated with a ton of bogus data, and the information presented here seems to support that.
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