i recently came to possess a printed out slide deck detailing an nsa collection program against telegram. i got it very accidentally, i live in a building with many national security-types and found the printout in the trash area. sounds crazy, not sure who's it was or why they took it out of a secure facility, but weirder things have happened. in a past life i used to work in government and even held a security clearance at times, and the program seems plausible to me. not going to post the slides themselves, don't want anyone to get in trouble, but i have no problem summarizing.
* the nsa collection program is called JUICYSTUFF. sometimes abbreviated JUST or JUST*. the program has buckets for different targets. JUSTRUMORS = russia, JUSTCHAOS = china, JUSTDISORDER = north korea, JUSTINSIGHT = iran, JUSTHAVOC = violent extremist organizations, JUSTMIRE = rest of world, JUSTSILENCE = telegram bots, etc.
* the program primarily uses two technical tools, TEMPTINGBAKE, sometimes abbreviated TEBA, and HUNTINGGLASS. both work by spoofing target users when interacting with telegram servers.
* TEMPTINGBAKE is the more sophisticated tool. given a telegram user id, it can collect the user's contact list, messages and media. it can only collect content accessible and readable on telegram servers so not things like secret chats. because its so sensitive nsa limits it to a few hundred targets per day. there are thousands of targeted users on TEMPTINGBAKE collection so most are collected every several weeks.
* HUNTINGGLASS requires a user id and additional telegram key information associated with the target user. nsa can usually provide this from other data holdings. it collects the same information as TEMPTINGBAKE.
* total telegram users targeted is in the 10s of thousands. tasking users is managed by an internal nsa jira instance. the target management aspect of the collection program is called JUDICIOUSHARVEST.
* nsa runs the program for the whole us intelligence community and the five eyes.
fair to have some skepticism about this, would love to see if any anons have heard of this program (i hadn't) or have ideas for figuring out accuracy. i hope the fact that this was printed means someone else out there with more knowledge is trying to get the word out. there's too much organizing that unfortunately happens on telegram not more secure methods imo, so i consider this as a warning. maybe telegram even tac
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