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Open Security Conference

@OSCo@infosec.exchange
mastodon 4.8.0-alpha.3+glitch
  • Open on infosec.exchange

Welcome to the official account of the Open Security Conference (#osco), the people-centred international gathering for everyone interested in cybersecurity.

Osco presents a different concept of security conference - literally from the community, for the community! It offers a platform to ease the learning curve in cybersecurity and provides the opportunity to learn, discuss, and teach.

#osco26 awaits! Join us November 5-8, 2026 in Rückersbach, Germany. Visit our website to learn more, and follow to stay up-to-date.

Run by @0xKristof@infosec.exchange, @cisokeener@infosec.exchange, Daniel, @hans@infosec.exchange, @Gronner@infosec.exchange (gr), @IsItArtOrTrash@digitalcourage.social, Kush, @lisihocke@mastodon.social (lisi), @nazneenr@mastodon.social, @realn2s@infosec.exchange (cl), and @seism0saurus@infosec.exchange (seism0saurus)

#Cybersecurity #Security #InfoSec #AppSec #ProductSecurity #OTsecurity #Diversity #Equity #Inclusion #DiversityEquityInclusion #DEI #OpenSpace

499 Followers
31 Following
50 Posts
Joined January 15, 2024
Date:
2026-11-05 - 2026-11-08
Location:
Seminarzentrum Rückersbach (near Frankfurt am Main, Germany)
Website:
https://opensecurityconference.org
Header picture:
https://unsplash.com/photos/multi-colored-plastic-blocks-on-white-wooden-table-sKxVmcFgc8o
Open post
Open Security Conference @OSCo@infosec.exchange
· 2mo ago

It's that time of the year! 🎉 The registration for the Open Security Conference 2026 is officially open. As space is limited we will process registrations first come first served, so get your ticket sooner rather than later.

🗓️ 5-8 November 2026
📌 Rückersbach, Germany (close to Frankfurt am Main)
➡️ https://opensecurityconference.org/conference/registration

#osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi]

Registration
Open Security Conference

Registration

Welcome to the Open Security Conference (osco), the people-centred international gathering for everyone interested in cybersecurity. Join us 5-8 November 2026 in Rückersbach, Germany.

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Open post
Open Security Conference @OSCo@infosec.exchange
· 3w ago
Registration for the Open Security Conference 2026 just closed! To everyone looking for a chance on a last minute package: join our waiting list, you've got nothing to lose! 🍀 https://opensecurityconference.org/conference/registration #osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity [lisi]
Registration
Open Security Conference

Registration

Welcome to the Open Security Conference (osco), the people-centred international gathering for everyone interested in cybersecurity. Join us 5-8 November 2026 in Rückersbach, Germany.

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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
The details for our second keynote just dropped! 🤩 Jahmel Harris will share his insights on "Building a Penetration Testing Lab in 2026" and we're here for it. Check out the full description here: https://opensecurityconference.org/conference/keynotes You also don't want to miss this? Register now for #osco26: https://opensecurityconference.org/conference/registration #osco #CyberSecurity #Security #InfoSec #AppSec [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
We've already presented our silver sponsors, yet did you know we also have fabulous bronze sponsors for the Open Security Conference 2026? 🤩 🧡 BRANDAD 🧡 DocuWare 🧡 @lutrasecurity@infosec.exchange All of them help make #osco more inclusive and we're truly grateful. Special kudos go out to our community sponsor Privacy Minded (@r_alb@mastodon.social)! Learn more about our sponsors: https://opensecurityconference.org/support/sponsors/ #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Big shout-out to REWE digital for their continued silver sponsorship of the Open Security Conference! 🩶 Their support helps people gain access to #CyberSecurity matters, no matter their own background. We're truly grateful! Discover #REWEdigital: https://www.rewe-digital.com/ Learn more about all our sponsors: https://opensecurityconference.org/support/sponsors/ #osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace #HomeOfIT #IT #Retail #ITSecurity [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 3mo ago

It's finally time to announce our first keynote speaker for #osco26! 🤩

We're more than happy to have Stephanie Carstensen with us this year. She's specializing in #OTsecurity and industrial cybersecurity and shares her a vast experience in her keynote "The Day Everything Stops: Preparing for the Cyber Crisis You Hope Never Comes".

Intrigued like we are? Check out the full description here: https://opensecurityconference.org/conference/keynotes

See you at #osco26! 😃

#osco #CyberSecurity #Security #InfoSec #AppSec [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Huge kudos to OSM Solutions for being a silver sponsor the Open Security Conference also for the 2026 edition! 🩶 We really appreciate their continued support in offering this event to even more folks interested in #CyberSecurity. Discover OSM Solutions: https://www.osm-s.com/ Learn more about all our sponsors: https://opensecurityconference.org/support/sponsors/ #osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace #HomeOfIT #IT #Retail #ITSecurity [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
We're really close now! 🐵 Registration for #osco26 will open soon. Watch this space or pre-register to get an email directly to your inbox once official registration is open: https://opensecurityconference.org/conference/registration ✉️ #osco #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 3mo ago

Did you know that the Open Security Conference originated at the SoCraTes conference? If you didn't, now you know. 💡 Which makes us even happier to announce that we officially partnered up with @SoCraTes_Conf@mastodon.social! 🤩

We can whole-heartedly recommend our fellow open space conference for everyone interested in tech: https://www.socrates-conference.de/

You can still apply for joining #socrates26 this year - it'll be full of inspiration with a deep sense of community. 💜

#osco #osco26 [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Replying to @OSCo@infosec.exchange
You'd like to learn more? Follow the hashtags, do your research, and make sure to learn directly from non-binary folks as well: #NonBinary #enby #BeyondTheBinary #NonBinaryAwarenessWeek #NonBinaryPeoplesDay #InternationalNonBinaryPeoplesDay [lisi] 2/2
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Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @OSCo@infosec.exchange

Maybe here's something new that you haven't been aware of before?

  1. Screen readers are used by way more people than those with visual impairments.
  2. Websites with lots of moving parts or animated gifs can cause motion sickeness.
  3. Mobile apps with small touch targets for buttons are frustrating or even impossible to interact with by people with tremors or large fingers.
  4. Checkout processes that time out unexpectedly or without prolongation option can increase anxiety.

2/3

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Open post
Open Security Conference @OSCo@infosec.exchange
· 3mo ago

We're super proud to announce our second keynote speaker for #osco26! 😊

Please welcome Jahmel Harris. He's not only a professional ethical hacker, he's also been contributing to community initiatives for way longer than we can think.

The keynote is still in the making, but we can already tell you so much: You don't want to miss this one! 😍

Stay tuned: https://opensecurityconference.org/conference/keynotes

See you at #osco26! 😃

#osco #CyberSecurity #Security #InfoSec #AppSec [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 3mo ago

We're super glad to announce that we've joined the #RainbowHat initiative! 🌈🤩 The Open Security Conference is founded on shared values for sure, so we're glad we can support the growing #RHSafeHarborNetwork. Check out the RainbowHat charter and learn more on their website: https://rainbowhat.org/ #osco #osco26 [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Replying to @OSCo@infosec.exchange
So here's a little decision helper: ⭐️ Maximize insightful conversations that truly interest you ⭐️ Gain inspiration on all the whole range of cybersecurity ⭐️ Connect with folks through hands-on interaction ⭐️ Learn on your own terms, catering to your own needs ⭐️ Experience the magic of an open space conference Intrigued? Get one of those last #osco tickets! https://opensecurityconference.org/conference/registration #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi] 2/2
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Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @OSCo@infosec.exchange
Today's the International Day Against Homophobia, Biphobia and Transphobia. The 2SLGBTQQIAP+ community continues to face massive discrimination across the world - also in your immediate surroundings. Look out for it. Stand up against it whenever it's safe enough. Reach out and learn more. Build better spaces. https://en.wikipedia.org/wiki/International_Day_Against_Homophobia,_Biphobia_and_Transphobia #IDAHOBIT #IDAHOBIT2026 #inclusion #CyberSecurity #Security [lisi] 2/2
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Open Security Conference @OSCo@infosec.exchange
· 3mo ago

Psst! We're busy preparing everything to open the official registration for #osco26. If you want to get informed once it's open so you can get first in line, just provide your email address via the pre-registration: https://opensecurityconference.org/conference/registration 😉 See you at #osco!

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Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Hi, I volunteered for the position of the beloved Open Security Conference mascot. A perfect candidate right from the start, with my name literally being the abbreviated conference name. My (not so) secret dream is to have little plush monkey versions of themself offered as conference swag! I'm into all things security. My team’s clearly purple, just like my bright eyes. I'm frequently seen hugging a flame - the symbol for unconference formats like Open Space.
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Huge thanks to our silver sponsor from day 1: itRISKman and @jenshoffmann@mastodon.online! 🩶 We're immensely grateful for their continued support over the years. They literally keep the Open Security Conference more affordable for everyone interested in cybersecurity. Discover itRISKman: https://www.itriskman.de/ Learn more about all our sponsors: https://opensecurityconference.org/support/sponsors/ #osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago

So many registrations already came in within the first days! 🤩🎉 Keep them coming, we're ready. 😉 ➡️ https://opensecurityconference.org/conference/registration

If you're wondering whether the Open Security Conference would be for you, check out our values and why we're doing this in the first place: https://opensecurityconference.org/about/values/ Feel free to reach out to us and bring your questions any time.

We hope to see you at #osco26!

#osco #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi]

Registration
Open Security Conference

Registration

Welcome to the Open Security Conference (osco), the people-centred international gathering for everyone interested in cybersecurity. Join us 5-8 November 2026 in Rückersbach, Germany.

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Open post
Open Security Conference @OSCo@infosec.exchange
· 3mo ago

Did you know that there's a really cool online open space conference out there? That it's free? And an #osco partner? 🎉 Well, if you didn't know, now you know! We wholeheartedly recommend to check out the Friends of Good Software Conference: https://frogsconf.nl

#FroGSConf is a participant-driven gathering for and by people with an interest in software and quality (and security!). The best thing: they also host lean coffee sessions and the next one is coming up on June 30! 🐸 #osco26 [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @OSCo@infosec.exchange
Now it's your turn: Find an accessibility aspect you didn't know about before. Bonus points if you share it with another person! https://accessibility.day #GlobalAccessibilityAwarenessDay #accessibility #a11y #inclusion #CyberSecurity #Security [lisi] 3/3
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Open Security Conference @OSCo@infosec.exchange
· 4mo ago

osco greets the amazing people at our partner conference @swec@mastodon.social
They wish you a great event.

#swec #swec26
@glacier@mastodon.glacier.events

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Open post
Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
His tags: #infosec, #agile, #systemsthinking Thank you very much for your work as a volunteer and your support in organizing the Open Security conference
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Open post
Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
Since the Open Security Conference is a project of volunteers and I wouldn't be here without them, I want to tell you about them. This will be a thread about the people behind osco. I will use #peoplebehindosco as hashtag for those introductions. They will be in alphabetical order. Stay tuned.
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Open Security Conference @OSCo@infosec.exchange
· 3mo ago

RE: @lutrasecurity@infosec.exchange

We could not have said it better! 🤩 We're super happy to have you on board. So here's a huge thanks and shout-out to @lutrasecurity@infosec.exchange for sponsoring #osco26! 🎉 [lisi]

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Open Security Conference @OSCo@infosec.exchange
· 4mo ago

We are happy to announce our new conference partnership.
Warm greetings go to @bobkonf@discuss.systems

Although this years edition of BOBKonf already took place in March, we are looking forward to exchanging ideas and learning from each other.
Check them out at https://bobkonf.de

#osco #osco26 #BOBkonf2026

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Open Security Conference @OSCo@infosec.exchange
· 5mo ago
Replying to @OSCo@infosec.exchange
More information: https://www.girls-day.de/ueber-den-girls-day/was-ist-der-girls-day2/english But boys also have to live with gender roles? There is a Boys'Day with the same goals but different jobs: https://www.boys-day.de/ueber-den-boys-day/was-ist-der-boys-day2/ein-zukunftstag-fuer-jungen/englisch We firmly believe that everyone has the right to develop freely and pursue their dreams. osco [uli] 2/2 #girlsday #girlsday26 #boysday #girlsandboysday
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Open post
Open Security Conference @OSCo@infosec.exchange
· 4mo ago

Today is world password day 🔑

Passwords have been used since ancient times and protect humans and assets. But computers get more powerful and adversaries trickier while our brains can't handle the increasing number of long passwords.
Therefore there are helpers and alternatives.
- Use unique and random passwords with password managers
- Use Multi Factor Authentication
- Try passkeys

Do you like games? https://neal.fun/password-game/

osco [uli]

#osco #osco26 #worldpasswordday #password #no…

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Open post
Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @OSCo@infosec.exchange
Especially in times like these, building environments where people can share experiences without pressure or judgment matters. Let this be a reminder to keep learning and supporting each other. #MentalHealthAwareness #MentalHealth #Wellbeing #Community [nazneen]
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Replying to @bobkonf@discuss.systems
@bobkonf@discuss.systems thank you for spreading the word 😊🙏🏻 [lisi]
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Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @bobkonf@discuss.systems
@bobkonf@discuss.systems Thanks for the shout-out 😁 Looking forward to our cooperation [Cla]
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Open Security Conference @OSCo@infosec.exchange
· 4mo ago
Replying to @zersiax@cupoftea.social
@zersiax@cupoftea.social @seism0saurus@infosec.exchange Hi Florian, we're aware and we cheer you for that! [lisi]
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Open post
Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
Greetings to @cisokeener@infosec.exchange With more than 2 decades of experience, Christian is an IT Operations veteran. Following the studies of applied computer sciences, his journey led from tv broadcasting, over large-scale webmail and online storage service provisioning, to state-certified services for legally compliant electronic communication, where his security career began over a dozen years ago. Today, he is a CISO in the online entertainment industry. #peoplebehindosco
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Open Security Conference @OSCo@infosec.exchange
· 1mo ago
The next one in the #peoplebehindosco series is Felix. Hi @Gronner@infosec.exchange 👋 Felix is a software engineer with more than 10 years experience in the automotive and medical industry. Working at XITASO he focuses on building secure and safe systems. Besides that he provides trainings on security, safety, software architecture and Rust. To learn in and with a community he organises the SWEC and is a member of the iSAQB. He loves learning by exploring: building small embedded system or tools, mostly in Rust. In his spare time he enjoys playing pen & paper games, miniature figure painting and playing the drums. His Tags: #AppSec, #Embedded, #Rust, #ThreatModeling Thank you very much for your work as a volunteer and your support in organizing the Open Security conference. Stay tuned and follow the hashtag #peoplebehindosco for more people behind osco.
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Open post
Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Replying to @DasLampe@chaos.social
@DasLampe@chaos.social Tickets are still available! :) That being said, not too many are left anymore for #osco26. As capacity is limited, tickets are distributed first come first serve. We can't tell how fast or slow the last ones will go, so we'd encourage you to act rather sooner than later. Once all tickets are gone, we'll open a waiting list - in case any registrant has to cancel that'll be the last chance to get a spot. We hope this helps you make a decision :) [lisi]
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Open post
Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Hi there, Sadly we had a server outage this night but it was fixed in the morning during breakfast 🥐 ☕️ If you are a creature of the night and wanted to access our homepage or registration, I'm sorry for the inconvenience. Please try again. kind regards [uli]
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Open post
Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
Afterwards, if you still want to care for others (which we absolutely appreciate), you'll now have a way better chance to have the capacity and energy to truly show up for them. 💜 Find out this year's theme: https://www.who.int/news-room/events/detail/2026/06/24/default-calendar/self-care-month-2026 #InternationalSelfCareDay #WorldSelfCareDay #SelfCareDay #SelfCare [lisi] 2/2
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Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
It's time for another #peoplebehindosco Say hello to Daniel, Daniel started building websites as a teenager. He studied Business Informatics and began his career in a self-employed collaboration with two friends, creating websites for small businesses. Since then, he has worked on a wide range of web-based systems - from payment integrations to complex operational platforms in the mobility sector. Today, Daniel is a Software Engineer with a strong focus on team culture and agile principles. He believes that great engineering is built on collaboration, compassion, and continuous learning. In his free time, Daniel enjoys photographing nature, playing computer games, reading books, and practicing yoga. Thank you very much for your work as a volunteer and your support in organizing the Open Security conference. Stay tuned and follow the hashtag #peoplebehindosco for more people behind osco.
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Open Security Conference @OSCo@infosec.exchange
· 2mo ago
Huge kudos go out to Socotra Williams (https://www.linkedin.com/in/socotra-williams-b3960327/) for facilitating an insightful retrospective for our #osco organizer team! 💜 We believe that every team can benefit a lot from reflecting what's been going on, putting all the things on the table, looking at them from every angle, sorting them out, and deciding together what to tackle next. Not to forget giving praise to each other! This session came at a key moment in time for #osco26 and we're moving on stronger together. 😊 1/2
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Open Security Conference @OSCo@infosec.exchange
· 1mo ago
Replying to @OSCo@infosec.exchange
The next one in our #peoplebehindosco series is @realn2s@infosec.exchange. As a recovering software developer Claudius has worked in cybersecurity for more than 15 years. He has developed everything from medical laboratory system and medical devices to content filters. He is interested in the human side of security, the combination of agility and security, and how to make security more accessible. He currently works as a Cybersecurity Consultant for SMA Solar Technology AG. Where he is busy with general Information Security, IT and OT Security, Product Security and Critical Infrastructure. His tags: #SeriousGames, #AgileSecurity, #HumanCenteredSecurity Thank you very much for your work as a volunteer and your support in organizing the Open Security conference. Stay tuned for more people behind osco.
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Open post
Open Security Conference @OSCo@infosec.exchange
· 2mo ago
We're proud to announce a new #osco partner! 😍 Check out BrewtCon: they're an unconference as well, they're also community-driven, and they're valuing diversity and inclusion, too. Plus we think they're awesome. Their mission is to build a community in Belgium for Testers and Quality professionals alike. BrewtCon is open for all, everyone is welcome! ➡️ Find out more: https://brewtcon.com/ #Brewt #BrewtCon #osco26 #OpenSpace [lisi]
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