It's ironic that spooks so often remind us that we've got nothing to fear from their activities if we've got nothing nasty to hide, while they themselves are rarely comfortable without multiple layers of secrecy, anonymity and plausible deniability. While there was little or nothing at the conference worth keeping secret, the sense of paranoia was constant. The uniformed guard posted to the entrance was there to intimidate, not to protect. The restrictions on civilians attending the law enforcement agency sessions were, I gather, a cheap marketing gesture to justify their $6,500-per-head entrance fee with suggestions of secret information that the average network-savvy geek wouldn't have known.
It poses a tremendous threat to human rights and dignity in countries without adequate legal safeguards, and still invites occasional abuses in countries with them. Its costs are paid by citizens who are deliberately kept in the dark about how much they're paying for it, how effective it is in fighting crime and how susceptible it is to abuse. And that's the way the entire cast of characters involved wants to keep it.
