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Channel

☢️🧑🏻‍💻OT Sentinel | ICS/OT Security🧑🏻‍💻☢️

@pythonwithmedev

On this record: Topic · Growth · Engagement · What this channel posts · Reactions · Stars · Posts · Citations · Cite this entry

1,191subscribers

+194 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of 1,000–3,162.

Register entry

Telegram ID-1002156387032
TypeChannel
Username@pythonwithmedev
CreatedBetween 1 June 2024 and 30 September 2024 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded8 August 2026
Last confirmed live25 September 2026
Measurements held13
Confirmed unchanged1 time, most recently 25 September 2026
On Telegramt.me/pythonwithmedev

Topic

Hacking & security — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 18 September 2026 and assigned it the closest of 31 fixed categories, at 99% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and why it has no browse page of its own yet.

Growth

9971,1911,0947 August 2026 — 997 subscribers8 August 2026 — 997 subscribers16 August 2026 — 1,036 subscribers19 August 2026 — 1,044 subscribers22 August 2026 — 1,057 subscribers25 August 2026 — 1,073 subscribers28 August 2026 — 1,105 subscribers31 August 2026 — 1,121 subscribers3 September 2026 — 1,129 subscribers9 September 2026 — 1,126 subscribers13 September 2026 — 1,138 subscribers16 September 2026 — 1,141 subscribers25 September 2026 — 1,191 subscribers7 August 202625 September 2026
13 measurements spanning 49 days, net +194. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 968–1,220 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)SubscribersChange
25 Sept 2026, 09:001,191+50
16 Sept 2026, 18:571,141+3
13 Sept 2026, 07:001,138+12
9 Sept 2026, 07:011,126-3
3 Sept 2026, 19:351,129+8
31 Aug 2026, 18:051,121+16
28 Aug 2026, 09:031,105+32
25 Aug 2026, 04:181,073+16
22 Aug 2026, 10:261,057+13
19 Aug 2026, 07:041,044+8
16 Aug 2026, 02:151,036+39
8 Aug 2026, 00:34997no change
7 Aug 2026, 19:30997first reading

Engagement

20 posts held, back to 31 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 page of Telegram’s post history, 20 posts per page.

Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 20 posts for this entry, the most recent from 6 August 2026. An engagement rate over an empty window would be a number about nothing.

What this channel posts

Video runtime
1m 11s
Average length
1m 11s

Measured directly from 1 video with a duration reading, out of the posts we hold for this channel — not this channel’s whole posting history, only the sample this register has actually read. An exact reading to the second, taken from the post itself rather than from Telegram’s own rounded chrome, so it carries no ≈ mark.

Reaction mix

33 reactions across 12 posts, in 5 distinct kinds. The most used accounts for 60.6% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
🔥2060.6%
💯515.2%
👾412.1%
👍26.06%
😨26.06%

No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.

Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.

Coverage. Reactions were read on 12 of the 20 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 33 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 20 most recent posts we hold, published 31 July 2026 to 6 August 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Telegram Stars

Stars received
7
across the posts below
Posts paid on
5
of 20 we hold a reading for · 25%
Most on one post
2
single highest reading

A paid reaction is a reader spending Telegram Stars — bought with money — on a post by @pythonwithmedev. Telegram publishes the count on the public post preview alongside ordinary reactions, and this register reads it there. It is the only figure on this site that measures money moving rather than attention.

Stars are not reactions, and the two are never added. They are rendered in the same strip on Telegram and counted in the same shape, but one is a tap and the other is a purchase. The reaction totals and the engagement rate elsewhere on this page exclude every figure in this section, and no rate here is computed against a reaction count.

This is not revenue, and we publish no currency figure. What a Star costs a reader and what it pays a channel are different numbers, Telegram takes a share we cannot observe, and the terms have changed. Converting a Star count into money would be an estimate dressed as a measurement, so the count is where we stop.

Counted over the 20 most recent posts we hold for this entry, published 31 July 2026 to 6 August 2026. Star counts above 1,000 reach us in Telegram’s short form and carry the same three-significant-figure rounding as everything else on this page.

Recent posts

6 Aug 2026, 09:10 UTC165 views8 reactionsread 8 August 2026

🛡️ نگاهی به یک برد الکترونیکی در قلب تجهیزات امنیتی صنعتی در این تصویر یک برد الکترونیکی رو می‌بینیم که از بخش‌های مختلفی مثل مدار تغذیه، قطعات پردازشی، ماژول‌های ارتباطی، رله‌ها و سیستم‌های حفاظتی تشکیل شده. بخش تغذیه با استفاده از ترانس، سلف‌ها و خازن‌ها وظیفه تأمین برق پایدار برای قسمت‌های مختلف مدار رو داره؛ چون در سیستم‌های صنعتی حتی یک نوسان کوچک برق می‌تونه باعث اختلال در عملکرد تجهیزات کنترلی بشه. قسمت پردازش…

👾4🔥3👍1

6 Aug 2026, 09:09 UTC141 views4 reactions1 Starread 8 August 2026
Photo

Photo, posted without a caption

🔥4

6 Aug 2026, 07:33 UTC176 views1 reactionsread 8 August 2026

۲. حالت دوم: حملات به پسوردهای Hashed (هش‌شده) اینجا داستان فنی‌تر میشه. فرض کن مهاجم به دیتابیس دسترسی پیدا کرده، اما به‌جای پسورد، با یه رشته ثابت‌طول (مثلاً ۶۴ کاراکتری برای SHA-256) مواجهه که از الگوریتم‌های یک‌طرفه (همان Hashing algorithm که توی دیاگرام هست) تولید شده. اینجا مهاجم سه راه بیشتر نداره: الف) حمله دیکشنری (Dictionary Attack): مهاجم یه لیست بزرگ از کلمات رایج، پسوردهای لو رفته یا ترکیب‌های محتمل رو…

🔥1

6 Aug 2026, 07:32 UTC922 views2 reactions1 Starread 8 August 2026
Photo

فرق حمله به پسوردهای Plaintext با هش‌شده چیه؟ توی این دیاگرام، دو مسیر مجزا برای حمله به پسوردها ترسیم شده که درکش برای هر مهندس امنیتی واجبه. بیایید قدم‌به‌قدم بررسیش کنیم. ۱. حالت اول: حملات به پسوردهای Clear-Text (متن باز) اینجا سیستم (یا مهاجم) مستقیماً به لیست پسوردهای ذخیره‌شده روی هارد یا دیتابیس دسترسی داره و این پسوردها کلاً بدون هیچ تغییری ذخیره شدن. مهاجم با خوندن فایل، مستقیم به رشته‌های پسورد می‌رسه. ا…

💯2

4 Aug 2026, 09:59 UTC223 views2 reactionsread 8 August 2026

اما در Modbus TCP ماجرا کاملاً فرق دارد، چون داده قرار است از شبکه Ethernet و با پروتکل TCP/IP عبور کند، به جای CRC، یک هدر ۶ بایتی به اسم MBAP به ابتدای PDU اضافه می‌شود که شامل Transaction ID است که مثلاً اینجا عدد ۳۷۵۲ را برای آن در نظر گرفته‌اند و کارش این است که در ارتباطات همزمان، مشخص کند هر پاسخ مربوط به کدام درخواست است، بعد Protocol ID که برای Modbus همیشه صفر است، سپس Length که تعداد بایت‌های باقی‌مانده از…

👍1🔥1

4 Aug 2026, 09:58 UTC841 views4 reactions2 Starsread 8 August 2026
Photo

خیلی از بچه‌های اتوماسیون وقتی با Modbus کار می‌کنند، گاهی فکر می‌کنند این دو پروتکل با هم فرق اساسی دارند، اما در عمل، تفاوت‌شان به جای ساختار دستور، به نحوه بسته‌بندی و انتقال برمی‌گرده. بگذارید یک مثال عملی بزنم تا قضیه کامل دستتان بیاید. فرض کنید می‌خواهیم از یک PLC دو تا رجیستر هولدینگ با آدرس‌های ۷ و ۸ را بخوانیم، دستوری که در هر دو پروتکل کاملاً یکسان است و به شکل ۰۱ ۰۳ ۰۰۰۷ ۰۰۰۲ نوشته می‌شود، که این یعنی آدرس…

🔥4

3 Aug 2026, 09:48 UTC170 views1 reactionsread 8 August 2026
Forwarded from @ModernLANVideo

با یک ارتقای ساده RAM، عملکرد سرورت چند برابر بهتر میشه ارتقای RAM فقط اضافه کردن چند ماژول حافظه نیست؛ اگر اصولش رعایت نشه ممکنه با خطاهای Performance ناسازگاری RAM یا حتی Boot نشدن سرور مواجه بشید. توی این ویدیو مراحل و نکات مهم ارتقای RAM روی سرورهای HP رو به صورت خلاصه نشون دادم . @ModernLan

🔥1

3 Aug 2026, 09:37 UTC148 viewsread 8 August 2026

، RSA که معروفترین الگوریتم نامتقارنه و بر پایهٔ فاکتورگیری اعداد بزرگ طراحی شده، و ECC که با کلید بسیار کوتاهتر امنیتی معادل RSA رو ارائه میده و برای دستگاههای محدود عالیه. بریم سراغ Hashing که یه فرآیند کاملاً یکطرفهست و از روی خروجیش نمیشه به دادهٔ اصلی رسید. اینجا MD2 و MD5 و SHA-0 و SHA-1 همگی قدیمی و شکسته شدن، در حالی که خانوادهٔ SHA-2 و SHA-3 استانداردهای فعلی و امن محسوب میشن و توی همهٔ پروتکلها استفاده میشن…

3 Aug 2026, 09:36 UTC≈1,060 views2 reactions1 Starread 8 August 2026
Photo

یه نقشهٔ کلی از الگوریتمهای رمزنگاری که توی هر سیستم امنیتی باهاشون سروکار داریم. از بخش Encryption شروع میکنیم که به دو شاخهٔ متقارن و نامتقارن تقسیم میشه. توی روش متقارن، رمزگذاری و رمزگشایی با یه کلید واحد انجام میشه، که مهمترین چالشش انتقال امن همون کلیده. اینجا الگوریتمهای جریانی مثل RC4، SEAL و WAKE رو داریم که داده رو بایت به بایت پردازش میکنن و برای ارتباطات لحظهای مناسب هستن، هرچند RC4 امروزه دیگه ضعیفه. در…

🔥2

2 Aug 2026, 22:42 UTC160 views3 reactionsread 8 August 2026
Forwarded from @iranopensourceFile

@iranopensource🌎

💯3

Showing the 12 most recent of 20 posts we hold for @pythonwithmedev. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Stars beside a post are paid reactions — Telegram Stars, bought with money and spent on that post. They are a different unit from reactions and are never added to them, here or anywhere else on this page.

Forward network

Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.

Mentions

Named by 1 registered channel — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.

Named by

Channels on the register whose posts name this channel's handle.

Names

Channels on the register whose handles appear in this channel's posts.

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 25 September 2026 — this entry's latest reading, not the date you are reading this.

“☢️🧑🏻‍💻OT Sentinel | ICS/OT Security🧑🏻‍💻☢️” (@pythonwithmedev), 1,191 subscribers as measured 25 September 2026. Telegram Register, tgregister.com/channel/pythonwithmedev.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.