More interesting stuff

This is by far the best stuff I've read on the wiretapping issue. Some other stuff that has been sputering out in the media is in Cringley's column last week on PBS.

Here's what is most likely going on with the NSA and FISA from a guy who used to work for the NSA:

"What I think is going on here is that they're using social network analysis. They get some numbers or endpoints of interest, and start out with classical traffic analysis, which can all be done (as I think you pointed out) with pen registers or their moral equivalent. They look for other numbers, and follow the graph of connections by transitivity.

"It's well known that any graph of associations in the real world tends to generate cliques, and that the clique size for a social group of any sort tends to actually be fairly small. This is the 'six degrees of Kevin Bacon' effect. But in a social network, there will also be people with many edges coming to them, and many paths in the transitive closure of the graph of their relationships, and those people are often 'centers.'

"In fact, just that sort of analysis was done -- after the fact -- of the 9/11 hijackers (in this week's links).

"I would guess that the SNA is used to identify people of interest -- although there would be some false positives, like if they all rented apartments from the same rental management firm, or all ordered from the same we-deliver falafel place. But someone who shows up in the transitive network of a lot of calls from overseas, and is also a high edge-count in the SNA graph, is definitely someone to be interested in. I wouldn't be at all surprised if that's when they apply for a FISA warrant and start actually intercepting."

So what we have the NSA doing is probably data mining, calling records in order to identify the people they want to order intercepts on. They are doing it without warrants because they like being sneaky, don't think they could get past the FISA court a warrant for 100 million calling records, and because the FISA law from 1978 probably doesn't distinguish between a pen-trap and an intercept.

If that's really the case, this doesn't sound quite as bad as we've feared. I feel better thinking that they are culling calling records rather than listening-in to my conversations. And it makes a lot more sense, from a pure technical capability standpoint.

So why couldn't they just tell us? Why couldn't they have simply amended the FISA law to take such activities into account? Because they like to be sneaky, tend to distrust even the people who pay them (that's us), and because they for some reason think that the bad guys won't figure this out for themselves.

Duh.

In english what the guy said was, we're trying to do some pattern matching here, and the pattern matching algorithm's are good and bad since they could turn up false positives. A lot of Computer Science terms are used, like graphs, which is like an arbitrary flowchart (oxymoron, but true).

IMHO, The key here is "high edge-count in the SNA (social network analysis) graph", which could be the start of such an algorithm, but by no means everything. Let's amend the FISA in some way that the ACLU doesn't end up being wiretapped, and the normal checks and balances are restored, and call it a day... perhaps if the country wasn't so polarized.

The FISA is used to carry out economic espionage tasks as well.