andreyka26_se
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Hey, I'm software engineer at Microsoft, with 7 years of experience. Here we are talking about F(M)AANG big tech interviews: leetcode, system design and corpo life.

YouTube: @andreyka26_se
Instagram: andreyka26_se
TikTok: @andreyka26__
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Let me start.

Whenever you click on the "vote", the telegram page loads.

STEP 1. telegram-page.html (naming for simplicity, actually named "/pnbZeA4")

This telegram page is regular "document" request that loads bunch of js files:
- 4vt095smidla.js.
See screen 1.

STEP 2. telegram-client-preloader.js (actually named "/4vt095smidla.js")

This preloader loads telegram client loader and bunch of other .js files

See screen 2.

STEP 3. telegram-webworker-loader.js (actually named "/9nnoq789wklc.js").

This loader registers WebWorker that runs telegram client js. This webworker runs in separate thread so we actually don't see opened sockets to Telegram.
See screen 3

STEP 4 telegram-client-webworker.js (actually named "/vmu7hv3hxb8g.js") starts communication with telegram using websockets.
To see it in webtools, go to edge://inspect/#workers, and click "inspect" on all workers you will see

See screen 4, 5, 6

Attaching deobfuscated files (some of them are so large that I need to do it locally)
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From now on, as they are changing domains the next day after my report - I will be posting domains to report here, so please join me, and let's ban motherfuckers, or at least make them pay for domains. For you it will be few clicks I will leave report content and links
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Daily (111 day streak)

Everyone in discussion is keep saying it is hard, but I got stuck in understanding how to understand the node is leaf, or node is root, or node in the middle.
I will give you hint: the node is leaf in graph only in case it has single connection and this connection is parent. Otherwise problem is not that hard (check hints in leetcode)

https://leetcode.com/problems/maximum-number-of-k-divisible-components/description/?envType=daily-question&envId=2025-11-28

#daily #hard
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