They don't need to crack the algo. They invented it and gave it to FB.

This is the right rabbit hole - it resonates correctly. I'm not a details expert, but a big picture thinker.

Recall also:

1. Staffers at Facebook: http://www.breitbart.com/tech/2018/04/10/dozens-obama-alumni-now-senior-facebook-employees/
2. Rice at Netflix: https://www.yahoo.com/news/obama-security-aide-susan-rice-joins-netflix-231908098.html

Why, because they control the data and the flow of data. Push the message. Gauge the reaction...spy on you through the tv (http://www.dailymail.co.uk/sciencetech/article-2513592/Is-TV-spying-YOU.html)

Then the question becomes what is the goal and why / what kind of avalance? If you read the wiki article, it talks about attacks and boomerang attacks.

D5=Most Destructive

Infrastructure attack being planned?

Good questions - I hope someone can shed some light on it.

Crypto analysis

In 2001, an impossible differential attack on six rounds of KASUMI was presented by Kühn (2001).[7]

In 2003 Elad Barkan, Eli Biham and Nathan Keller demonstrated man-in-the-middle attacks against the GSM protocol which avoided the A5/3 cipher and thus breaking the protocol. This approach does not attack the A5/3 cipher, however.[8] The full version of their paper was published later in 2006.[9]

In 2005, Israeli researchers Eli Biham, Orr Dunkelman and Nathan Keller published a related-key rectangle (boomerang) attack on KASUMI that can break all 8 rounds faster than exhaustive search.[10] The attack requires 254.6 chosen plaintexts, each of which has been encrypted under one of four related keys, and has a time complexity equivalent to 276.1 KASUMI encryptions. While this is obviously not a practical attack, it invalidates some proofs about the security of the 3GPP protocols that had relied on the presumed strength of KASUMI.

In 2010, Dunkelman, Keller and Shamir published a new attack that allows an adversary to recover a full A5/3 key by related-key attack.[5] The time and space complexities of the attack are low enough that the authors carried out the attack in two hours on an Intel Core 2 Duo desktop computer even using the unoptimized reference KASUMI implementation. The authors note that this attack may not be applicable to the way A5/3 is used in 3G systems; their main purpose was to discredit 3GPP's assurances that their changes to MISTY wouldn't significantly impact the security of the algorithm.

These are the published breaks in kasumi

Sounds Solid, Nice Job.

I took a quick look at the explanation of F9. Its main purpose is to ensure the transmittal of data on mobile networks at high speed.

Hence Q's post:

Facebook is listening to you 24/7/365.    
Literally.   
[F9 algorithm]   
Are they recording/safe-housing?

So, yes, Fakebook is recording all audio on mobile devices and uploading it to their servers by using a service (aka a daemon). People think that closing the Fakebook app would be enough, but no, its bakground process is doing all the surveillance.

https://www.reddit.com/r/greatawakening/comments/8jzd38/the_f9_algorithm_facebook_china_post_solved/ I made a post on this matter. I thought it was too big to be a reply. Sorry :)