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!

It's International Self-Care Day. Yep, that special day that's exactly on July 24th as self-care is a 24/7 topic. Look after yourself. Even if you feel the urge to take care of others first, you are worthy of care, you are worthy to be taken care of first and by yourself. 1/3

So many of you already registered for #osco26 and we love seeing it! 🤩 If you're among those who are still thinking about whether the Open Security Conference is for you, please know that only a few more tickets are available! So here's a little decision helper: ... 1/3

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: build a community in Belgium for Testers & Quality professionals. 1/2

Huge kudos go out to Socotra Williams (www.linkedin.com/in/socotra-w...) for facilitating an insightful retrospective for our #osco organizer team! 💜 1/3

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.ap.brid.gy All of them help make #osco more inclusive and we're truly grateful. 1/2

Our Sponsors

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.

opensecurityconference.org

It's International Non-Binary People's Day! 🎉 Did you know that the date was chosen for being precisely midway between International Women's Day and International Men's Day? Despite the impression this may give, gender is not on a scale at all. 1/3

Save the date: #BOBkonf2027 takes place Friday, 26 February 2027, at Scandic Hotel Potsdamer Platz in Berlin! Until then, why not re-watch some (or all!) of the excellent talks from previous conferences on our website? You can find them via bobkonf.de/archive/ #BOBkonf

Neu gelistet: Open Security Conference 🔐 Vom 5. bis 8.11.2026 in #Johannesberg Cybersecurity für alle – vom Einstieg bis Expert*in. Penetration Testing, Secure Software, Cloud Security & mehr. @opensecurityconf.bsky.social #Barcamp #osco #osco26 #Cybersecurity

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: opensecurityconference.org/conference/k... 1/2

Keynotes

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.

opensecurityconference.org

Our partner conference @opensecurityconf.bsky.social takes place in November, and registration for OSCO 2026 is now open! If you're interested in security, OSCO offers a relaxed, diverse open space format for you to meet like-minded folks. More information: register.opensecurityconference.org

Home

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.

opensecurityconference.org

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]

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: www.osm-s.com 1/2

Home | OSM Solutions

We provide expert knowledge and tailored technical solutions, including managed services, to comprehensively address your cybersecurity and compliance needs.

osm-s.com

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: www.rewe-digital.com 1/2

REWE digital: Your Home of IT

We develop software that inspires. Join us in shaping the digital future of retail for millions of people. ▶ Are you ready? Then come and join us!

rewe-digital.com

Huge thanks to our silver sponsor from day 1: itRISKman and @jenshoffmann.bsky.social! 🩶 We're immensely grateful for their continued support. They literally keep the Open Security Conference more affordable for everyone interested in cybersecurity. Discover itRISKman: www.itriskman.de 1/2

IT Risk Man

We use cookies to optimize our website and our service. (data protection)

itriskman.de

So many registrations already came in within the first days! 🤩🎉 Keep them coming, we're ready. 😉 ➡️ opensecurityconference.org/conference/r... If you're wondering whether the Open Security Conference would be for you, ... 1/2

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.

opensecurityconference.org

It's that time of the year! 🎉 The registration for the Open Security Conference 2026 is officially open. 🗓️ 5-8 November 2026 📌 Rückersbach, Germany (close to Frankfurt am Main) ➡️ opensecurityconference.org/conference/r... #osco #osco26 #Security #CyberSecurity #InfoSec #AppSec #OTSecurity [lisi]

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.

opensecurityconference.org

Video of Hannes Mehnert's #BOBkonf2026 talk "Run your own digital infrastructure using MirageOS unikernels" is now up on our website! bobkonf.de/2026/mehnert... #BOBkonf

BOB Konferenz@bobkonf.de · 5mo ago

The last block of talks on track A at #BOBkonf2026 starts with Hannes Mehnert and "Run your own digital infrastructure using MirageOS unikernels"

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: opensecurityconference.org/conference/r... ✉️ #osco #Security #CyberSecurity #InfoSec #AppSec #OTSecurity #OpenSpace [lisi]

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.

opensecurityconference.org

Ariadne Engelbrecht's #BOBkonf2026 talk "Accessibility by Design: Practical A11y for Everyday Software Engineering" is now available online! bobkonf.de/2026/engelbr...

BOB Konferenz@bobkonf.de · 5mo ago

On #BOBkonf2026 talks track B, Ariadne Engelbrecht presents "Accessibility by Design: Practical A11y for Everyday Software Engineering".

Video of Julia Himmel's #BOBkonf2026 talk "Proofs for programs, programs for proofs" is now up on our website! bobkonf.de/2026/himmel....

Proofs for programs, programs for proofs

Proofs about programs are great, but what happens if we let programs and proofs interact in both directions? Lean is both a programming l...

media.ccc.de

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: opensecurityconference.org/conference/r... 😉 See you at #osco!

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.

opensecurityconference.org

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: frogsconf.nl 1/2

Friends of Good Software Conference

Friends of Good Software (FroGS) - Tuesday 30 June 2026 16:00 CEST (lean coffee)

frogsconf.nl

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.ap.brid.gy for sponsoring #osco26! 🎉 [lisi]

Lutra Security@lutrasecurity.infosec.exchange.ap.brid.gy · 2mo ago

At Lutra Security, we're convinced that we can only protect against cyber threats if work together. The foundation on which we all build is the collective sharing of knowledge and experience. Therefore, we are happy to announce that we are sponsoring the Open Security Conference 2026. @OSCo is […]

At Lutra Security, we're convinced that we can only protect against cyber threats if work together. The foundation on which we all build is the collective sharing of knowledge and experience. Therefore, we are happy to announce that we are sponsoring the Open Security Conference 2026. @OSCo is […]

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. 1/2

Keynotes

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.

opensecurityconference.org

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 ... 1/2

Keynotes

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.

opensecurityconference.org

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

RainbowHat – RainbowHat – your safe harbor in cybersecurity community

rainbowhat.org

📣 🚨 Elbsides conference 2026 is sold out 🚨 📣 Registration for the workshop day on June 4th is closed too. If you didn't get a ticket for either day, consider our fellow partner conferences: BSides Frankfurt(Sept 10-11, 2026),Open Security Conference(Nov 5-8, 2026) and BSides Munich(Nov 7 & 9, 2026)

Thanks to CCC generously hosting, the videos for recorded talks from #BOBkonf2026 are going up! We're kicking this off today with Stefan Kaufmann's keynote "'Digital Sovereignty' – Searching for Meaning in a Magical Concept". Find the video, slides, etc here: bobkonf.de/2026/stk.html

BOB Konferenz@bobkonf.de · 5mo ago

#BOBkonf2026 is off to a great start with Stefan Kaufmann's keynote "'Digital Sovereignty' – Searching for Meaning in a Magical Concept".