What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

요즘 해외거주 한국인 상대로 발신번호 조작해서 보이스피싱 하는 경우가 많아진거 같은데

전 5년 전에 일본 휴대폰으로 전화와서 받았더니 한국말로 제 본명 대면서 맞냐고 물어보길래 "아닌데요?" 하길래 "그럼 누구십니까?" 이래서 "이명박입니다." 했더니

이후 반년 동안 오는 사기 전화에서 전부 이명박 취급 당함

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Geocoding API 비교: 가격, 무료 티어 및 이용 약관 등
------------------------------
- *지오코딩 API는 주소
좌표 변환 기능을 제공* 하며, *리버스 지오코딩* 은 주어진 좌표에 거리 주소를 할당하는 것으로 다양한 애플리케이션에 활용됨
- 가격, 무료 사용량, 데이터 사용 조건 기준으로 7개 주요 API 서비스 비교
- HERE, Google Maps, Azure Maps, OpenCage, TomTom Maps, LocationIQ, No…
------------------------------
https://news.hada.io/topic?id=20524&utm_source=googlechat&utm_medium=bot&utm_campaign=1834

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ハンギョレが主張するようにユンを産んだ母体である韓国検察など信用できるものではないだろう。これは田母神やヒゲを産んだ自衛隊を信用できないことにも通じる。そういう連中が出世する組織なのだから。

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@server_destroyer:biological_server: 수다쟁이 렌게쨩 (お喋りレンゲちゃん) :sabakan: @draco드라코 쉽게 설명해서 대칭키는 스파이랑 본국이 같이 들고 있는 공유 비밀서적, 비대칭키는 아무나 잠글 수는 있는데 나만 열 수 있는 자물쇠입니다
비대칭키는 회사 정보가 유출당해도 내 키를 복제할 수 없어요 (대신 해커가 자기 키에 해당하는 공개키로 수정해 등록하는 건 가능 = 인감도장 새로 파서 등록)

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Geocoding API 비교: 가격, 무료 티어 및 이용 약관 등
------------------------------
- *지오코딩 API는 주소
좌표 변환 기능을 제공* 하며, *리버스 지오코딩* 은 주어진 좌표에 거리 주소를 할당하는 것으로 다양한 애플리케이션에 활용됨
- 가격, 무료 사용량, 데이터 사용 조건 기준으로 7개 주요 API 서비스 비교
- HERE, Google Maps, Azure Maps, OpenCage, TomTom Maps, LocationIQ, No…
------------------------------
https://news.hada.io/topic?id=20524&utm_source=googlechat&utm_medium=bot&utm_campaign=1834

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去年有衛星圖資顯示,共軍疑似在內蒙古演習靶場模擬台灣總統府周邊博愛特區景物。孟沛德指出,國家領導人於戰時的存在具重要性,而中共這些行動顯然是刻意安排的操作,目的在於確保他們能夠即時掌握台灣總統的維安細節,令人憂心。

cna.com.tw/news/aipl/202504250

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事實上,我覺得這場大罷免最有意義的事,是讓以前見不得光的,盤根錯節的地方勢力和黑道浮上檯面,到底誰有做事,誰只是仗勢欺人,都看得一清二楚。

尤其是在路上欺負罷團,施壓連署店家的縣市。

不管你支不支持大罷免,你都要看清楚這些人,他們不是在為人民做事,只是在爭取自己的權勢。

你今天不阻止他,他就對你吃乾抹淨,出事就切割卸責。

為了自己和後代,請一定要想清楚。
你真的要繼續支持一個讓你感到恐懼的人嗎?

圖:桌友提供 :sacabambaspis_normal:

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비대칭키 : 나하고 통신할 때는 이 키(공개키)로 암호화해서 줘. 그리고 내가 준건 이걸로 복호화해서 보렴. (공개키로 암호화한건 비밀키로 복호화. 비밀키로 암호화한던 공개키로 암호화)

대칭키 : 우리 서로 통신할 땐 이걸로 암호화하고 복호화하자(같은 키를 양쪽이 미리 가지고 있음)

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With bluesky (mostly) going down for a few hours today, I got to wondering about how decentralized the fediverse really is in terms of where its servers are hosted. I grabbed a server list from fedidb, with network information coming from ipinfo.io .

[EDIT: I did a better analysis on a dataset of 10x as many servers, see discuss.systems/@ricci/1144003 ]

These stats are by the number of *servers* not the number of *users* (maybe I'll run those stats later).

fedidb currently tracks 2,650 servers of various types (Mastodon, pixelfed, lemmy, misskey, peertube, etc)

The fediverse is most vulnerable to disruptions at CloudFlare: 24% of Fediverse servers are behind it. Also note that this means that I don't have real data on where this 24% are located or hosted, since CloudFlare obscures this by design.

Beyond CloudFlare, the fediverse is not too concentrated on any one network. The most popular host, Hertzner, only hosts 14% of fediverse servers, and it falls off fast from there.

Here are the top networks where fediverse servers are hosted:

504 Cloudflare, Inc.
356 Hetzner Online GmbH
130 DigitalOcean, LLC
114 OVH SAS
56 netcup GmbH
55 Amazon.com, Inc.
55 Akamai Connected Cloud
36 Contabo GmbH
33 SAKURA Internet Inc.
32 The Constant Company, LLC
31 Xserver Inc.
28 SCALEWAY S.A.S.
24 Google LLC
23 Oracle Corporation
16 GMO Internet Group, Inc.
14 IONOS SE
14 FranTech Solutions
11 Hostinger International Limited
10 Nubes, LLC

Half of fediverse servers are on networks that host 50 or fewer servers - that's pretty good for resiliency.

There is even more diversity when it comes to BGP prefixes, which is good for resiliency: for example, the cloud providers that have multiple availability zones will generally have them on different prefixes, so this gets closer to giving us a picture of the specific bits of infrastructure the fediverse relies on.

The top BGP prefixes:

55 104.21.48.0/20
50 104.21.16.0/20
48 104.21.64.0/20
41 104.21.32.0/20
41 104.21.0.0/20
38 104.21.80.0/20
32 172.67.128.0/20
31 172.67.144.0/20
28 172.67.208.0/20
28 162.43.0.0/17
27 104.26.0.0/20
26 172.67.192.0/20
26 172.67.176.0/20
23 172.67.160.0/20
19 116.203.0.0/16
17 172.67.64.0/20
17 159.69.0.0/16
16 65.109.0.0/16
14 88.99.0.0/16
14 49.13.0.0/16
13 78.46.0.0/15
13 167.235.0.0/16
13 138.201.0.0/16
11 95.217.0.0/16
11 95.216.0.0/16
11 49.12.0.0/16
11 135.181.0.0/16
10 37.27.0.0/16
10 157.90.0.0/16

75% of fediverse servers are behind BGP prefixes that host 10 or fewer servers, meaning that the fediverse is *very* resilient to large network outages.

Top countries where fediverse servers are hosted:

871 United States
439 Germany
156 France
148 Japan
75 Finland
57 Canada
49 Netherlands
38 United Kingdom
26 Switzerland
26 South Korea
21 Spain
19 Sweden
18 Austria
17 Australia
15 Russia
12 Czech Republic
10 Singapore
10 Italy

And finally, a map of the locations of fediverse servers:
ipinfo.io/tools/map/91960023-e

Rob Ricci (@ricci@discuss.systems)

Thanks to suggestions from others, I did this with a much larger dataset of 27k fediverse servers (10x as many as my last post). This time the data is from https://fedilist.com/instance Here's what I get: CloudFlare does sit in front of a large number of servers (4620) but a smaller percentage: 17% Hetzner is replaced by OVH, barely, as the second most popular host, each host about 11% of fediverse servers Top 10 networks in this dataset: 3000 Cloudflare, Inc. 2471 Hetzner Online GmbH 1009 DigitalOcean, LLC 861 OVH SAS 655 Akamai Connected Cloud 627 netcup GmbH 353 Amazon.com, Inc. 340 IONOS SE 334 Oracle Corporation 327 Contabo GmbH The astute reader will notice that this does not match what I said above re: Hetzner and OVH; this is because the first set of stats counts each *domain* once, and this set counts each *IP address* once. Many of the domains at OVH are hosted from a handful of IP addresses, this is likely due to masto.host but I didn't look deeply. Here are the top 10 IP addresses hosting fediverse servers: 681 94.23.75.107 (OVH) 657 54.38.247.97 (OVH) 481 151.101.3.7 (Fastly) 255 104.21.16.1 (CloudFlare) 251 178.33.220.142 (OVH) 184 50.56.249.138 (Rackspace) 172 217.182.80.236 (OVH) 166 104.22.76.159 (CloudFlare) 144 151.101.131.7 (Fastly) 135 139.99.39.10 (OVH Singapore) Now, the majority fediverse servers are on networks that host *five or fewer* fedivserse servers. Six thousand fediverse servers are the only one on their network. To take out half of the fediverse (remember, we're talking servers here, not users), you'd have to take out more than *three hundred networks*. Top countries in this bigger dataset: 7114 United States 4230 Germany 1248 France 862 Japan 605 Finland 599 United Kingdom 565 Netherlands 529 Canada 221 Australia 217 Switzerland And by continent (as defined by ipinfo): 8874 Europe 7661 North America 1218 Asia 250 Oceania 73 South America 24 Africa Several folks suggested other interesting analyses: * A post that peeks behind the CloudFlare curtain: https://blog.benjojo.co.uk/post/who-hosts-the-fediverse-instances * A cool site that displays similar data in a much more pretty form, and has some per-user data: https://fedi.wrm.sr/ * A graph that shows that while there are big instances of course, users are actually spread across a large set of instances overall: https://aus.social/@Drbruced/114335400872850185 Thanks to the people that brought these to my attention! Finally, a more complete map: https://ipinfo.io/tools/map/190d4a54-1b40-4749-ad1b-17524bed11ea

discuss.systems · discuss.systems

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In case you weren't aware, has both and communities where you can get help, discuss features, or just chat about and federated social networks.

Feel free to join either community based on your preference. Both channels have active discussions about Fedify and federation topics.

혹시 모르고 계셨다면, Fedify는 Discord와 Matrix 커뮤니티를 운영하고 있습니다. 이곳에서 도움을 받거나, 기능에 대해 논의하거나, ActivityPub와 연합 소셜 네트워크에 대해 대화를 나눌 수 있습니다.

여러분의 선호도에 따라 어느 커뮤니티든 참여해 주세요. 두 채널 모두 Fedify와 연합 관련 주제에 대한 활발한 논의가 이루어지고 있습니다.

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논리나 레토릭은 도구와 같아서, 때로는 도구를 바른 데 쓰는 것이 중요할 때도 있지만, 때로는 바른 도구를 손에 쥐는 것이 중요할 때도 있다고 믿습니다. 개중에는 집단혐오와 같이, 어디에 쓰기 위해서라도 손에 쥐면 안 되는, 그걸 손에 쥘 수 있다는 것 자체가 이미 일선을 넘은 행위가 되는, 도구라기보다는 차라리 흉기나 총기 같은 논리들도 존재한다고 믿습니다. 아무리 좋은 목적을 위해서라도 그런 도구로 일을 하면 안 됩니다.

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I will be talking soooo much more about this in the coming weeks, but the collective knowledge-building mutual aid project I've been working on with friends and fellow travelers is starting to emerge into the world, and this is where to sign up if you want notifications. Boop:

unbreaking.org

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혹시 모르고 계셨다면, Fedify는 Discord와 Matrix 커뮤니티를 운영하고 있습니다. 이곳에서 도움을 받거나, 기능에 대해 논의하거나, ActivityPub와 연합 소셜 네트워크에 대해 대화를 나눌 수 있습니다.

여러분의 선호도에 따라 어느 커뮤니티든 참여해 주세요. 두 채널 모두 Fedify와 연합 관련 주제에 대한 활발한 논의가 이루어지고 있습니다.

もしかしたらご存じないかもしれませんが、Fedifyには DiscordとMatrixのコミュニティがあります。ここでは、サポートを受けたり、機能について議論したり、ActivityPubやフェデレーテッドソーシャルネットワークについて話し合うことができます。

お好みのコミュニティにご参加ください。どちらのチャンネルでも、Fedifyやフェデレーション関連のトピックについて活発な議論が行われています。

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In case you weren't aware, has both and communities where you can get help, discuss features, or just chat about and federated social networks.

Feel free to join either community based on your preference. Both channels have active discussions about Fedify and federation topics.

혹시 모르고 계셨다면, Fedify는 Discord와 Matrix 커뮤니티를 운영하고 있습니다. 이곳에서 도움을 받거나, 기능에 대해 논의하거나, ActivityPub와 연합 소셜 네트워크에 대해 대화를 나눌 수 있습니다.

여러분의 선호도에 따라 어느 커뮤니티든 참여해 주세요. 두 채널 모두 Fedify와 연합 관련 주제에 대한 활발한 논의가 이루어지고 있습니다.

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저는 오늘 가서 교환 해야지 환급 받자~ SKT 전고객 유심 무상교체 발표 28일 월요일 10시 이후부터 전국 T월드 매장과 공항 로밍센터에서 가능하며 알뜰폰도 포함하고 이미 교체했다면 환급 적용 가능 SKT는 유심 무료 교체 서비스를 19일~27일 자비로 유심을 교체한 고객에게도 소급 적용하여, 고객들이 이미 납부한 비용에 대해 별도로 환급한다

RE: https://bsky.app/profile/did:plc:3kpxnqm2khemwvspufsncve4/post/3lnm6kgj75c25

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혹시 모르고 계셨다면, Fedify는 Discord와 Matrix 커뮤니티를 운영하고 있습니다. 이곳에서 도움을 받거나, 기능에 대해 논의하거나, ActivityPub와 연합 소셜 네트워크에 대해 대화를 나눌 수 있습니다.

여러분의 선호도에 따라 어느 커뮤니티든 참여해 주세요. 두 채널 모두 Fedify와 연합 관련 주제에 대한 활발한 논의가 이루어지고 있습니다.

もしかしたらご存じないかもしれませんが、Fedifyには DiscordとMatrixのコミュニティがあります。ここでは、サポートを受けたり、機能について議論したり、ActivityPubやフェデレーテッドソーシャルネットワークについて話し合うことができます。

お好みのコミュニティにご参加ください。どちらのチャンネルでも、Fedifyやフェデレーション関連のトピックについて活発な議論が行われています。

0

In case you weren't aware, has both and communities where you can get help, discuss features, or just chat about and federated social networks.

Feel free to join either community based on your preference. Both channels have active discussions about Fedify and federation topics.

혹시 모르고 계셨다면, Fedify는 Discord와 Matrix 커뮤니티를 운영하고 있습니다. 이곳에서 도움을 받거나, 기능에 대해 논의하거나, ActivityPub와 연합 소셜 네트워크에 대해 대화를 나눌 수 있습니다.

여러분의 선호도에 따라 어느 커뮤니티든 참여해 주세요. 두 채널 모두 Fedify와 연합 관련 주제에 대한 활발한 논의가 이루어지고 있습니다.

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去年有衛星圖資顯示,共軍疑似在內蒙古演習靶場模擬台灣總統府周邊博愛特區景物。孟沛德指出,國家領導人於戰時的存在具重要性,而中共這些行動顯然是刻意安排的操作,目的在於確保他們能夠即時掌握台灣總統的維安細節,令人憂心。

cna.com.tw/news/aipl/202504250

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SKT T월드에 유심 무상 교환 공지 뜬 거 봤는데

> 4월 28일(월) 오전 10시부터
> 전국 SK 텔레콤 매장, 공항 로밍센터에서 교체 가능
> 대상 고객 : 18일 금요일 24시 기준 SK텔레콤 가입자

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Mastodon Zine Rough Draft

Here’s a Mastodon-themed zine that I’ve been working on for a while. I started this a year ago, but put it on pause because I didn’t think it was getting to where I’d like it to be. I decided to bring this project back out and make some tweaks to it before sharing the draft here publicly, with the hope of getting feedback and collaborating on it with other folks.

This draft (and the final zine) are CC-BY licensed. This is a single page zine that can be printed and folded at home using the directions I shared in this blog post https://docpop.org/zine

Mastodon Zine v2 (April 24th, 2025):

Here is v2 of the Mastodon zine. Based on feedback from v1 of the zine, I switched up the font. The new font uses an open-source font called Cascadia Mono (available here). I shortened a few sentences and added a drawing of a DeLorean.

I think this zine should either be about why Mastodon (and the fediverse) is worth exploring OR it should be about how to join Mastodon, but I don’t think it’s capable of doing both. So for v3 I’m thinking about removing the last 3 pages about how to join Mastodon and reduce that to a link and QR code. Maybe a link to my “How To Get Started With Mastodon” post.

Below is the version you can print and fold at home (using the zine making instructions here):

Version 2 of the Doc Pop's Mastodon guide. This is an 8 page guide, all laid out on one single sheet of paper. People can print this guide out and then fold it into a little booklet

or the zine can be read online here:

MASTODON, THE FEDIVERSE,AND EVERYTHING:A guide to better social media
It's time for change.Mastodon gives power back to its users.It's ad-free, algorithm-free, and interoperable.Connect with diverse communities andrediscover the joy of social media, thanks to the magic of the fediverse.
The Fediverse!Imagine interacting with a YouTube video from your Instagram account... or following a Twitter user from your Facebook page.This is the promise ofthe fediverse.The fediverse is an ecosystem of websites and services that interact with each other through an openprotocol.No single company ownsor controls thefediverse.
The fediverse is more than MastodonThe fediverse is home to many other apps like Pixelfed, WordPress, Flipboard,Lemmy, Peertube,and Threads. This means you canstay connected to all of your friends from within your Mastodon feed without signing up for other services.
The Benefits ofMastodon• Control Your Data:Mastodon does not collect or sell your data to advertisers or third parties.• Own Your Followers:If you want to change servers, you can take your followers with you .• No Algorithms:You control what you see and how you see it in your feed.• Community Focused:User privacy and safety are top priorities in the Mastodon community.
How to Join:Step 1: Pick an Instance An "instance" is a server running the Mastodon software. Each instance can have its own moderation and rules, but they are all connected in one single fediverse.Step 2: Create an Account Once you've picked an instance, find an available username and create your account. Just like email, your handle on the fediverse is a combination of your username and the instance you are on, e.g.,@username@mastodon.socialb
Step 3: Create Your Profile Use the Edit Profile button to add a profile picture, bio, and relevant links. The more info you add here, the easier it is to connect withnew and old friends.Step 4: Follow and Engage Making new friends can be intimidating. The best advice is to dive into the deep end and try following and interacting as much as possible. You can find people with similarinterests by searching for keywords in the search bar or clicking on hashtags,e. g., #StarTrek. You can follow hashtags as well as people!
Engage!The more you put into Mastodon, the more you get out of it. Find new friends, follow interesting hashtags, and get engaged by Liking, commenting, or"boosting" posts.it's a great idea to write an #introduction post about yourself and pin it to your feed.

A small handmade zine called “Mastodon, the universe, and everything” sitting in a coffee table next to a cappuccino and a copy of “Stolen Sharpie Revolution”Version 2 of the Doc Pop's Mastodon guide. This is an 8 page guide, all laid out on one single sheet of paper. People can print this guide out and then fold it into a little bookletMASTODON, THE FEDIVERSE, AND EVERYTHING: A guide to better social media
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