Such an attack is beyond the capability of most organizations and requires capability that is unlikely to be in ISIL’s arsenal. An attack on this scale is difficult to pull off without authorities getting wind of it. The coordination required suggests state involvement.
It is common for people with no experience in government to believe that false flag attacks are not possible, because they think the entire government would have to be involved and not everyone would go along with it. Someone would talk. However, if the report I have received is correct, hardly anyone has to be involved, and security forces are simply disabled.
Remember the reports that during 9/11, a simulation of the actual events that were occuring was being conducted, thus confusing responsible parties about the reality.
I am unable to reveal any further information. If security experts find the information credible, they should direct their inquiries to the French authorities.
http://www.paulcraigroberts.org/2015/11/15/french-security-left-blind-during-paris-attacks-2/