On Tue, Nov 17, 2015 at 1:19 PM, Tony Arcieri
media accounts were already posting pictures of the Eiffel Tower along with "God bless you on your mission" 72 hours before the attack:
http://www.dailymail.co.uk/news/article-3320732/ISIS-supporters-shared-image...
It would be rather ironic if ISIS committed an opsec failure that bad which intelligence services weren't able to pick up on, and yet encryption is blamed anyway.
Years of news reports has shown they don't consider it opsec failure but modus operandi. Unfortunately, absent other specific actionable intel knowledge, even such generic warnings picked up can't be acted on. So this is rather moot, what are you going to do, lock down a country everytime someone holds their fist in the air and wishes or swears... please. Let's get back to real police work. And understand that freedom isn't free.