Active Matrix Rooms

Active Cybersecurity Matrix Rooms

Find 405 active cybersecurity Matrix rooms and spaces. Matrix room search list — sorted by real-time message velocity. Updated live. We only count messages to measure activity — message content is never read, stored, or indexed.

405 active rooms · sorted by message count · updated live · content never stored

#1

CVE Feeds

🛡️ Live feed van nieuwe CVE-kwetsbaarheden

16 msg/hr 53 members mtux.nl
#2

CalyxOS

A privacy and security focused Android OS | https://calyxos.org | Issues / Feature requests: https://gitlab.com/CalyxOS/calyxos/issues In case of abuse, ping us with @calyx-mods.

13 msg/hr 1,025 members matrix.org
#4

#debian-security

security.debian.org | security-tracker.debian.org | feel free to ask questions or give information about potential security problems

7.7 msg/hr 651 members matrix.org
#5

Free Software Movement

Libre Software, free file formats, open standards/protocols. See also: #libregaming-matchmaking:tchncs.de https://matrixrooms.info | Free Software (popularly marketed as Open Source, OSS, FOSS, or FL

2.8 msg/hr 998 members matrix.org
#6

Linux Security Feeds

Not affiliated with any distribution or group. Followed feeds: https://usn.ubuntu.com/usn/atom.xml https://www.debian.org/security/dsa https://bodhi.fedoraproject.org/rss/updates/?type=security&status

1.3 msg/hr 25 members fedora.im
#7

Linux

🇺🇦🇪🇺 | Talk about the GNU/HURD/Linux operating system and related stuff | be sensible, have nice discussions :) | oh, and https://dontasktoask.com | try not to become a help vampire, we have banhammer

1.0 msg/hr 1,554 members envs.net
#8

Cybersecurity-Off Topic

| Part of the Cybersec matrix.org community (#cyber-space:matrix.org) | The room needs urgent attention? @ all the mods! | RULES: https://cybersec-rules.neocities.org

1.0 msg/hr 204 members calitabby.net
#9

devlug-bot

IT Security Feeds: https://forum.opnsense.org/index.php?PHPSESSID=02aghbesc7c4embfb9d2qrr9hq&action=.xml;type=rss;board=11.0 https://matrix.org/blog/feed https://my.proxmox.com/en/announcements/rss ht

1.00 msg/hr 63 members tchncs.de
#11

xroutine-matrix

Come talk about all things technology! Programming | Linux | Open source projects | Arduino | Security | IoT | SBC like the raspberry pi | Arm devices | RISC-V | LlaMa Your pet tech projects are at h

0.97 msg/hr 324 members matrix.org
#12

Security.nl

📰 Beveiligingsnieuws & privacy-updates van Security.nl

0.67 msg/hr 9 members mtux.nl
#13

WEDF: General Forum (New)

Discussions about all things data and data technologies - implications of data use, privacy, AI, security, as well as anything and everything at the intersection of information, technology and society

0.33 msg/hr 150,156 members worldethicaldataforum.org
#15

NixOS Security Discussions

Discussions around Security | Triaging happens in #security:nixos.org

0.17 msg/hr 643 members nixos.org
#16

[PG] Main

Privacy Guides is your central privacy and security resource to protect yourself online • Have a question? Ask on our forum: https://discuss.privacyguides.net • https://www.privacyguides.org • Space:

0.17 msg/hr 3,121 members tchncs.de
#17

Haskell in Nixpkgs/NixOS

For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://nixos.org/manual/nixpkgs/unstable/#haskell | Current PR: https://github.com/nixos

0.17 msg/hr 729 members nixos.org
#18

Hack Liberty Community

We are a group of cypherpunks, privacy advocates, engineers, and philosophers dedicated to the pursuit of truth, liberty, and knowledge for all. We believe technology is a tool for liberation, not ens

0 msg/hr 26,104 members envs.net
#19

Anonymity Privacy and Security

This is where we discuss ways to protect your online identity and maintain privacy. Share experiences, learn strategies, and explore latest developments in online security. Join us and let's work towa

0 msg/hr 25,598 members envs.net
#20

Cypherpunk Cryptopia

Welcome to the Cypherpunk Cryptopia, where privacy, security, and freedom take center stage. Join us as we discuss cryptography, decentralization, and online anonymity, working towards reshaping the d

0 msg/hr 23,703 members tchncs.de
#21

Radios and Wireless Hacking

Step into a world of frequencies and signals where experts and enthusiasts meet. Explore the intricate art of hacking wireless systems, discover new techniques, and share your knowledge with like-mind

0 msg/hr 22,580 members tchncs.de
#22

RSS - Hack Liberty News

Feed List: https://paste.hackliberty.org/?99738ed5ca137027#4gipqVGWpsjPKUVhUV28txtwEmksb9neUsztNK3LxA6a | Topics: agorism, agorist, agorist philosophy, alternative currencies, anarchism, anarcho-capit

0 msg/hr 22,559 members tchncs.de
#25

Nim Security

A channel for all offensive/defensive security projects in Nim. Bridged to the nim discord channel #security

0 msg/hr 3,630 members matrix.org
#27

RSS - Dark Web News

Stay up to date with the latest Dark Web news through our fast polling RSS feed, delivering real-time updates on illicit activities, emerging cyber threats, and technological advancements within the h

0 msg/hr 2,523 members tchncs.de
#28

BlackArch

Official BlackArch Linux Channel | Help, Support, Hacking, Socializing, Trolling (only me) | DM / highlight members without valid reason = BAN | https://blackarch.org/faq.html | Tools Count: 2850

0 msg/hr 2,504 members matrix.org
#29

Hacking

0 msg/hr 2,359 members matrix.org
#31

spring-security

Welcome. Ask away! Unless otherwise specified we assume you're using the latest 5.x version of Spring Security

0 msg/hr 2,166 members matrix.org
#33

#sysadmin | Systems Administration

#ops:matrix.org Provisioning, orchestration, configuration, networking, security, maintenance, firefighting, and all things system administration

0 msg/hr 2,079 members matrix.org
#34

hackers, please!

The topics of this room are infosecn,sudomy,dumping,mdsecactivebreach,recon,install,jarm,theharvester,specify,mal,fileless,managed,reference,bind,fun,honeypots,discussed,tag,sniffing,ield,fetches,gal,

0 msg/hr 2,026 members midov.pl
#35

Nix Nerds

The Jupiter Broadcasting NixOS Channel: chat, support, community. Get your nixcon 2025 ticket! https://2025.nixcon.org/ 5-7 September 2025 @Switzerland Check if you are eligible for a *free* ticket:

0 msg/hr 1,929 members jupiterbroadcasting.com
#36

OMC

Join The Courtyard first! Answer the questions so you can get invited to the Onboarding rooms. OMC is a democracy-based community for minor-attracted persons (MAPs) aged 15 and older to give and rece

0 msg/hr 1,871 members crypted.cafe
#38

Secure Messaging Apps

Discussion on secure messaging apps like: Signal, Wire, Telegram, Threema, Wickr etc. ... Security related.

0 msg/hr 1,648 members matrix.org
#39

Sicurezza Informatica

(questo gruppo è bridgiato da telegram, su matrix potreste vedere alcuni comandi fatti a vuoto, che sono in realtà fatti sul gruppo su telegram https://t.me/infosecita)

0 msg/hr 1,591 members matrix.org
#40

DivestOS

Chat about DivestOS. https://divestos.org DivestOS is a project that aims to improve privacy and security of largely end-of-life devices. Rules: https://divested.dev/pages/community_rules Please re

0 msg/hr 1,583 members aria-net.org
#42

Win96 Malware

Bridge to Windows96 #win96-malware

0 msg/hr 1,340 members matrix.org
#44

OpenSSL

LATEST RELEASES: 3.0-alpha13 (11-MAR-2021), 1.1.1k (25-MAR-2021) | SECURITY ADVISORY: https://www.openssl.org/news/secadv/20210325.txt

0 msg/hr 1,270 members matrix.org
#46

Nix Package Manager development

For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here.

0 msg/hr 1,041 members nixos.org
#47

Hackers (Encrypted)

Welcome to the hacker hangout | No politics | Be patient with questions, it might take hours for people to respond. | Please keep conversations family friendly | Checkout #malware:matrix.org for malw

0 msg/hr 1,040 members matrix.org
#48

[email protected]

Kuketz-Blog: IT-Sicherheit | Datenschutz | Hacking - Weitere Infos: https://www.kuketz-blog.de/chat/

0 msg/hr 1,008 members matrix.org
#49

Opsec

Privacy and Security - Rules of opsec: No misinformation or trolling, No Excessive language, we're all adults but don't go overboard, No spam or malicious motives, Keep off topic discussions to

0 msg/hr 942 members librem.one
#52

Cybercrime

anonymity, carding, malware, bank logs, scaming, blackmailing

0 msg/hr 891 members matrix.org
#53

Security

Subspace mit Räumen rund um Security. Teil von #morpheus_community_matrix:matrix.org

0 msg/hr 890 members matrix.org
#54

RUSSIANS HACKERS

hacker, cracker, coder, programmer, carding, virus control, infection, the dark side, those same Russians hackers Cyber security community https://t.me/russianshackers

0 msg/hr 863 members matrix.org
#55

Privacy Security Anonymity

Everything about Privacy, Security and Anonymity. Providing a consolidated view of all the main PSA community rooms and also some related Spaces and Rooms on Matrix in a single view.

0 msg/hr 842 members matrix.org
#56

Liberation Technology

Free software, open source, DIY, hacking, surveillance self-defence, digital co-ops. Code of conduct: #matrixunited-space:pixie.town.

0 msg/hr 836 members ponies.im
#57

Anonymity

Permanently moved to #privacy-security-anonymity:anonymousplanet.net community. All about anonymity. Read our guide at https://anonymousplanet.org. Rules: https://psa.anonymousplanet.org. Enjoy your s

0 msg/hr 809 members matrix.anonymousplanet.org
#58

NixOS Security Triage

Coordination and triage of security issues in nixpkgs | Discussions in #security-discuss:nixos.org | Open PRs: https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc+label%3A%2

0 msg/hr 798 members nixos.org
#59

Cybersecurity-General

Part of the Cybersec matrix.org community (#cyber-space:matrix.org) The room needs urgent attention? @ all the mods! RULES: https://cybersec-rules.neocities.org

0 msg/hr 723 members envs.net
#60

Mozilla Security

security conversations related to the Mozilla community and products. [Please don't disclose vulnerabilities here! File a security bug at bugzilla.mozilla.org or send mail to [email protected]]

0 msg/hr 704 members mozilla.org
#61

Hacking

Discuss Various Types of Ethical Hacking

0 msg/hr 583 members matrix.org
#64

PrivSec.dev — Practical Privacy & Security

Technical discussions only. No politics (except strictly related to privacy and security), no conspiracy theories, no "backdoored because proprietary". Any claim of malware/spyware must be backed up w

0 msg/hr 528 members arcticfoxes.net
#65

Self-hosting | Security | Sysadmin | Homelab | Programming

Welcome to our chat channel dedicated to all things related to self-hosting, cyber security, system administration, and homelab discussions and support! Whether you're an experienced sysadmin, a cyber

0 msg/hr 497 members mozilla.org
#66

PSA Community

Privacy Security Anonymity Community, Chatrooms Rules: https://psa.anonymousplanet.org/

0 msg/hr 434 members tchncs.de
#67

Wired Rehab

Wired Rehab is a cypherpunk collective for better digital-spaces and better analog-selves | wired.rehab | Tags: agorism, philosophy, anonyminity, censorship evasion, decentralization, privacy, freedom

0 msg/hr 397 members aria-net.org
#68

Krita

This is a channel for developers and users of Krita, not a pro support chat room. If you leave, we cannot reply. Frequently asked questions: https://docs.krita.org/en/KritaFAQ.html | You can also ask

0 msg/hr 390 members calitabby.net
#69

Nintendo Switch

See it here first on #NintendoSwitch! A multicultural community of friends, fun & games. Get your daily dose of updates, news, reviews and experiences from Switchians around the globe! Join us for

0 msg/hr 385 members matrix.org
#70

Science of Matrix Reading Group

Exchange of and on scientific papers, books and related resources on all things Matrix. See room pin and https://github.com/jryans/awesome-matrix#research for the current paper list. Topics range from

0 msg/hr 384 members dsn.tm.kit.edu
#71

Hackers Place

Discuss any topic here. Discuss stuff ranging from hacking, Anonymity to anything except religion. Lets Learn and Evolve together.

0 msg/hr 369 members matrix.org
#72

hacking

This is our world now... the world of the electron and the switch, the beauty of the baud.

0 msg/hr 358 members librem.one
#73

Netflix/security_monkey

Security Monkey is EOL in 2020 - Please consider migrating to another tool

0 msg/hr 347 members gitter.im
#76

!Wired Rehab - The Lounge

Wired Rehab is a digital detox community for the cultivation of better digital spaces and better analog selves. | wired.rehab | Tags: agorism, anonyminity, censorship evasion, decentralization, privac

0 msg/hr 287 members aria-net.org
#77

#hackerspaces

Moin @ https://hackerspaces.org ⚒ Meetups (about the wiki, transnational collaboration...) happen at CCC, and online — put your proposals to https://pad.land/hso-agenda ⚒ Need Help? https://wiki.hacke

0 msg/hr 275 members libera.chat
#78

Crypto Circular Economies

Join us in exploring innovative ways to promote sustainable economic models through cryptocurrencies, fostering circular economies that empower communities and individuals by facilitating trade outsid

0 msg/hr 272 members tchncs.de
#79

Fedora Security Team

Fedora Security Team |​ Discourse: https://discussion.fedoraproject.org/tag/security-sig

0 msg/hr 267 members matrix.org
#80

RSS - Security News

Feed List: https://paste.hackliberty.org/?c97a2f6df032278a#4FVsQDRXqgWiFzZJzWLdpKna1ZEktREWiqjHsNhacBYd | Topics: access control news, application security news, biometric security news, bug bounty n

0 msg/hr 261 members envs.net
#81

Android Privacy & Security

Space - #android-priv-sec:matrix.org | Posts, wiki & files - https://hub.libranet.de/channel/and-priv-sec post federate over activitypub & zot - see the channel for details

0 msg/hr 255 members matrix.org
#82

RSS - Cypherpunk News

RSS Feeds: https://paste.hackliberty.org/?ad5e355fcf2dfb05#GQAdjeruHKvmDDhnwj5Z8gNtBfmjBVA8wkWDfYgDLpUh | Topics: agorism, agorist, agorist philosophy, alternative currencies, anarchism, anarcho-capit

0 msg/hr 254 members envs.net
#84

Security (old)

Room was upgraded. Please move to #security:matrix.org

0 msg/hr 235 members tchncs.de
#85

hillhacks

Hillhacks - Hacking in the hills. | See https://hillhacks.in/

0 msg/hr 233 members matrix.org
#86

SYSSEC [ LOBBY ]

SPACE: #system-security:matrix.org

0 msg/hr 233 members matrix.org
#87

TechWh0re

Spreading privacy and security. (pools closed edition). solving retarded problems with retarded solutions

0 msg/hr 232 members midov.pl
#88

OLGA - Open Chat Room

Welcome to the Biohacking-/ DIYbio Community in Graz https://realraum.at/wiki/doku.php?id=olga:olga

0 msg/hr 228 members matrix.org
#89

[PG] Services

Discuss or report a problem with any of our hosted services (forum, gitea, etc.) - Report an issue: https://discuss.privacyguides.org/c/services/2 - Report a security vulnerability: @jonah:aragon.sh

0 msg/hr 221 members neat.chat
#90

Livehacking

The Joy of Coding airs most Wednesdays at 1PM ET https://mikeconley.ca/joc/

0 msg/hr 220 members mozilla.org
#91

Infosec

A room for infosec/security folks

0 msg/hr 219 members librem.one
#92

Security

Making the interwebs safer by good security practices - DM admins to request posting permissions

0 msg/hr 216 members beast.chat
#93

Security

0 msg/hr 206 members fosdem.org
#94

AffRip

Affiliate marketing, hacking & cybersecurity, advertising, programming, technology, open source, search engine optimization (SEO)

0 msg/hr 205 members matrix.org

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