Information Security

**Hey fellow AWS enthusiasts! ✨** This April we welcome **[Philipp Hoyer](https://www.linkedin.com/in/philipp-hoyer-621555174/)**, Lead Engineer at Rackspace Technology. He'll walk us through a journey of AWS' popular containerization services Amazon ECS and Amazon EKS running on Fargate by discussing which fits best for which use case, where EKS can make you go nuts and when ECS might shines brighter - or vice versa. **📆 Tonight's Agenda** 19:00 - Welcoming **19:15 - Talk by Phillip** 20:15 - Networking Thanks to our friends at **[CodeCam:N](https://www.codecamp-n.com/)** who open their offices for us and sponsor food and drinks for this evening. Looking forward to seeing you 👋🏻 Nora & Frank \-\-\- The talk ⤵️ **An AWS Container Journey - The Good, The Bad and The Ugly featuring ECS and EKS** EKS on Fargate promises fully managed Kubernetes with zero node management—but the reality is often more complex than expected. This talk explores the journey of building a production workload on EKS Fargate, starting with the initial motivations and architectural decisions. It uncovers three non-obvious pitfalls that only surface during real-world implementation, including challenges with load balancing, EFS integration, and logging. For each case, the underlying issues and the required workarounds are dissected to reveal the hidden operational complexity behind the “serverless” promise. Based on these insights, the talk takes a critical look at whether ECS on Fargate would have been the simpler alternative. It provides a concise overview of ECS, highlights its own limitations, and delivers a direct comparison between ECS and EKS. The session concludes with clear, experience-driven guidance on when to choose which service—helping teams avoid costly assumptions and make better architectural decisions in AWS container environments. The speaker⤵️ Philipp is a Lead Engineer at Rackspace Technology who enjoys turning complex cloud architectures into solutions that actually work in practice. He started in software development, moved through the DevOps world of pipelines, containers, and Kubernetes, and eventually specialized in AWS. He has built and operated cloud solutions ranging from big data and streaming platforms to containerized and serverless workloads. With experience in both insurance and automotive, his focus today is on real-world cloud challenges—especially the ones that don’t show up in the docs. Get in contact with Philipp on [LinkedIn](https://www.linkedin.com/in/philipp-hoyer-621555174/) \-\-\- **Please note:** At the event, photos and videos will be taken for marketing purposes both by our hosts and our location sponsors. We try to offer a hybrid experience by providing a video stream of the talk. There will be no recording published after the event. Please also keep in mind, that we try our best effort to provide a good streaming experience. We don't offer a professional stream, so delays, technical issues or other interference are a matter to be tolerated.

Kom naar het HaHaHo Makers Lab Utrecht voor een avond vol kennis & ervaringsdelen en maken, met de focus op elektronica met microprocessoren zoals Arduino & Raspberry Pi, LED’s en meetapparatuur. 19:00 Inloop + opzetten apparatuur 19:45 Standup: wat wil iedereen doen en/of leren deze avond? 20:00 Parallelle activiteiten: – startactiviteiten voor nieuwe deelnemers (Arduino, soldering, meetapparatuur, etc.) – onderlinge kennisuitwisseling adhv de wensen uit de standup – werken aan het gezamenlijke [PraatPaal-project](https://github.com/hadoopmarc/hahaho-interactive-pole) – werken aan je eigen project – ordenen/markeren van de ladenkasten met elektronisch componenten 21:30 Start met opruimen 21:45 Einde en verlaten van de Bibliotheek Wij zijn meestal met een groep van een kleine tien (er is ook nog een whatsapp aanmeldingslijst). Een laptop is niet noodzakelijk maar komt vaak van pas! We vragen een vrijwillige donatie van €5,55 per avond om de inventaris met apparatuur en elektronische componenten op peil te kunnen houden. English 19:00 Room available for setting up equipment 19:45 Standup: what are the participant’s plans and wishes for the evening? 20:00 Parallel activities: – starter activities for new participants (Arduino, soldering, measuring equipment, etc.) – sharing knowledge as follow-up on the plans and wishes expressed during the standup – working on the community [Interactive Pole project](https://github.com/hadoopmarc/hahaho-interactive-pole) – working on your individual project – sorting the chest of drawers with electrical components 21:30 Start decluttering the room 21:45 End: leave the Public Library Most evenings see a group of about 10 people (there is an additional whatsapp list). Bring your laptop if you want to program microcontrollers! We ask for a voluntary donation of €5,55 per evening to maintain the inventory with equipment and electrical components.

***English invitation*** You are invited to visit the Dutch Deventer Toastmasters. Toastmasters is an organisation where you can develop your public speaking and leadership skills in a safe, positive and inspiring environment. It grows your self confidence and gives your energy a boost. Want to visit us? Send an email to deventertoastmasters@gmail.com ***Nederlandse uitnodiging*** Je wordt van harte uitgenodigd om onze Nederlandse bijeenkomst te bezoeken bij Deventer Toastmasters. Toastmasters is een organisatie waar je je vaardigheden op het gebied van spreken in het openbaar en leiderschap kunt ontwikkelen. Dit doen we in een veilige, opbouwende en inspirerende omgeving. Je zelfvertrouwen groeit en je energie krijgt een boost. Wil jij meedoen? Stuur een email naar Deventertoastmasters@gmail.com

If you are living in The Netherlands, by now, you may well have noticed the amount of open water. If you enjoy cycling in the city, you may wish to feel safer as you navigate the bridges and canals. And you may also want to get ready for visiting the beach, pools or the many lakes this summer. Learning how to swim takes approx 1 year and it all starts with the very first lesson. New comers enroll via our website and pay € 30,50, this is the first lesson and a goody bag. After the class you agree with the personal swim coach how to continue to obtain your final objectives. Enrolling is only possible via [www.your-personal-swim-coach.nl ](https://www.your-personal-swim-coach.nl/)hence a rvsp via meetup is not enough.

A great ride along the Vecht and Gein rivers. You will love this route. Please ride single file along the winding river as there can be cars around each corner. **Route:** https://connect.garmin.com/modern/course/441606271 GPX: https://drive.google.com/file/d/17-T_pT_GH3QKSFcH1WWgfArvxSdAkVzO/view?usp=sharing **Afterwards:** Drinks at Polder https://maps.app.goo.gl/tbt5DDG7YLU3uWvaA **Rules:** \- Download the route to your cycling computer so you can always find your way home \- Make sure to arrive on time \- Before you ride\, decide as a group how you want to ride: you can split up in a fast and a slow group or stay together\, but make sure to discuss what pace you are going to ride and whether you are going to wait if someone is slower than the group\, or not\.

Samen sporten, gewoon voor de fun, elke week een divers programma, met allerlei verschillende sporten. Je hoeft niet de beste te zijn, maar wel zin hebben om samen te spelen en te leren. Tijdens een training doen we verschillende spelletjes, basketbal, voetbal. volleybal, spikebal, honkbal. Kom je ook, de bal ligt bij jou!! Eerste keer meedoen is altijd gratis, daarna kan je beslissen of dit voor jou is, of niet!! Dus kom een keer proberen. Kan je niet op deze dag, we sporten ook op andere dagen nl Zondag om 9:30 of Maandag om 20:30 Stuur mij een berichtje als je op die dagen een keer wil proberen! The amount of people rsvp'd to this game doesn't match the real number of people at the event, as Meetup is only used for promotion purposes.

After not having the the monthly meetup of march, we are back on **14 april** at **Enrise**! Pascal Baljet will join us to talk about Laravel and Inertia. js! Enrise is easily reachable by car (located right next to the A1 exit "Amersfoort Noord") as well as by public transport (there is a bus stop 100m walking from the office). If you are coming by car, you can park your car on the roof of the building. Also good to know; **Enrise will be sponsoring Pizza for this meetup** 🍕! 18:30 - Pizza delivery (around this time) & doors open 19:30 - **Modern front-end without API: Laravel + Inertia. js** \- Pascal Baljet 20:30 - Social **Modern front-end without API: Laravel + Inertia. js** Inertia.js lets you build modern single-page applications using your favorite backend and frontend frameworks, without needing to write an API. You use server-side routing and controllers, but render frontend components instead of server-rendered templates. In this talk, I’ll show how features like forms with real-time validation, deferred props, prefetching, infinite scroll, and polling work. All within a single repository.

**📣 Registratie voor deze editie gaat vier weken voor aanvang open! 📣** **17.00 - 18.00** Inloop & eten **18.00 - 18.10** Openingswoord InSpark **18.10 - 19.00** **Barry 'fish_' van Kampen** - *Own the PWNage: Waarom ik op 14 duizend linkjes per dag klik* Securityteams rennen van incident naar incident, terwijl aanvallers rustig onze infrastructuur verkennen. We zitten op een goudmijn aan data, maar kijken zelden naar wie er daadwerkelijk interesse toont in onze omgeving. In deze sessie laat ik zien hoe deception engineering je helpt om die nieuwsgierigheid meetbaar te maken en hoe je met je bestaande data aanvallers ziet voordat er impact is. In kijkje in de keuken: \- MITRE ATT&CK vanuit een offensief perspectief\. \- Welke goudpot zitten we al op? \- Wat kunnen we met deze data? \- Welke data willen we nog meer zien? \- Wat zijn onze reacties en waar kunnen we verbeteren? **19.00 - 19.10** Break **19.10 - 20.00** **Derk van der Woude** - *Security for AI Agents* Met de opkomst van AI-agents binnen het Microsoft-ecosysteem ontstaan er nieuwe uitdagingen op het gebied van identiteit en beveiliging. Hoe authenticeert een agent? Hoe beperk je wat een agent mag doen? En hoe detecteer je afwijkend gedrag voordat het een probleem wordt? **20.00 - 20.10** Break **20.10 - 20.30** Pubquiz! 🕺🏻🎁 **20.30 - 21.30** Borrel en einde

Ontdek de nieuwste ontwikkelingen in tech, samen met vakgenoten, collega's en externe professionals. **De sprekers van de avond:** Richard Vincent Nederlog & Edwin van Wijngaarden * Eigenaren en oprichter van Two Rocks. Een bedrijf die zich specialiseert in AI & Procesautomatisering voor MKB organisaties Mysterie guest! * Dit jaar hebben we een mysterie guest op de planning! Benieuwd naar het onderwerp? Meld je aan en kom erachter op 16 april bij 4CEE. **Het programma van de avond:** * 17:00 - 18:00 Inloop & Pizza * 18:00 - 18:45 Opening & Talk 1 met Richard en Edwin * 18:45 - 19:00 Pauze * 19:00 - 19:45 Talk 2 met een mysterie guest * 19:45 - 20:00 Q&A * 20:00 - 21:00 Borrel & netwerken Aanmelden kan [hier](https://werkenbij.4cee.com/tech-talk)!

Das nächste Treffen der Hamburg PowerShell User Group findet am 15.04.2026 um 18:30 Uhr statt und ihr seid herzlich eingeladen! Das Treffen findet vor Ort (bei glueckkanja) und online statt. Link nach Anmeldung in meetup einsehbar. 1\. Welcome 2. **Publish-Blog - PowerShell for the static age** Creating content for a blog can be challenging — running the blog itself absolutely is not! Especially when PowerShell comes into play. **Andi Bellstedt** unveils the mechanisms behind his new blog. He demonstrates how GitHub Actions and CI/CD pipelines work together to build, test and publish a static website the PowerShell way. Get practical ideas to simplify and solidify your workflows for static site creation. Along the way, there will be demos showing how AI supports parts of the development process and how these tools help maintain the blog efficiently. 3\. Q&A Wir freuen uns auf eure Teilnahme.

**Um was geht es dieses mal?** Dieses Mal findet das Meetup in Kooperation mit dem **n8n Meetup im Ruhrgebiet** statt und wird wie immer bei uns bei codecentric in Dortmund ausgerichtet. Beim 3. n8n Meetup im Ruhrgebiet geht es wie immer darum, die Möglichkeiten von n8n besser kennenzulernen, Erfahrungen zu teilen, voneinander zu lernen und sich mit anderen auszutauschen. Dieses Mal steht das Meetup zusätzlich im Zeichen von Vibe Coding und schnellem Prototyping. Im Fokus steht, wie sich n8n als Backend für Automatisierungen, Schnittstellen und Logik im Hintergrund mit Vibe Coding für die schnelle Entwicklung von Frontends verbinden lässt, um in kurzer Zeit funktionierende Prototypen, interne Tools und erste MVPs umzusetzen. Anhand konkreter Beispiele und Live-Demos zeigen wir, wie aus einer Idee schnell etwas Nutzbares entsteht. **Hybrides Setup!** Wir freuen uns, euch bei uns in den Räumen der codecentric AG in Dortmund willkommen zu heißen. Vor Ort versorgen wir euch mit Snacks und Getränken und freuen uns gleichzeitig über interessante Diskussionen und einen guten Austausch. Für alle, die es nicht zu uns ins Office schaffen, werden wir das Meetup Hybrid durchführen. Der Stream beginnt ca. 10 Minuten später, damit wir vor Ort ausreichend Möglichkeit für persönliches Kennenlernen haben. Den Live-Stream findet ihr auf dem [YouTube-Channel](https://www.youtube.com/@codecentricAG) der codecentric AG. **Wichtig - Absage bitte rechtzeitig:** Wir bestellen das Essen bereits 3 Tage vor dem Meetup. Falls ihr doch verhindert sein solltet, bitten wir euch um eine rechtzeitige Absage. Das ist wichtig, damit wir nicht unnötig Essen verschwenden müssen. Vielen Dank für euer Verständnis! **Anreise:** Per Zug: Vom Dortmunder HBF sind es ca. 10 Minuten zu Fuß. Mit dem Auto: Rund um das Office gibt es einige Parkflächen, dazu befinden sich in dem Parkhaus der Thier-Galerie weitere Parkplätze.

**Location:** Beyond Republica campus, Amsterdam ([https://maps.app.goo.gl/hJLCKeqVEMaEoLV16](https://maps.app.goo.gl/hJLCKeqVEMaEoLV16)) **Address**: Papaverhof 59, 1032 LX Amsterdam For parking: there are the following spots: \- along the Papaverweg which are at 1\.72 euros per hour\, at NDSM: https://www\.amsterdam\.nl/parkeren/parkeertarieven/ \- 3 mins walk: in front of Karwei\, GAMMA\, JYSK \(free but space is limited\) \- also there are plenty of Parkbee locations nearby within 5 mins walking radius\. \- Or near Mosveld Shopping Mall \(15 mins walk\) Mosveld Shopping Mall Free for the first 90 minutes €0.50 per 30 min; max €10/day See [https://owasp.org/www-chapter-netherlands/upcomingevents](https://owasp.org/www-chapter-netherlands/upcomingevents) for more information about the OWASP Netherlands chapter. 18:00 - 18:15 - **Reception of attendees** 18:15 - 19:00 - **Simple meal** 19:00 - 19:15 - **Welcome and OWASP updates** 19:15 - 20:00 - **False Clear Ahead - When Agents Derail Your Defenses** by **Rens van Dongen** 20:00 - 20:15 - **Break** 20:15 - 21:00 - **Bot vs. Bash: How Modern Threat Actors are Actually Using AI** by **Daniel Kapellmann Zafra** **False Clear Ahead - When Agents Derail Your Defenses** **Abstract:** AI agents that pass an initial security review can still derail through prompt injection, tool poisoning, or destructive overalignment — the “false clear.” Drawing on recent research, real-world incidents, and AI governance at Dutch Railways, this talk explores how agentic AI reshapes the enterprise attack surface and what defense-in-depth strategies help you govern agents without blocking innovation. **Bio:** AI Governance and Cybersecurity strategist, specializing in responsible AI and secure software policy for the Dutch Railways. Experienced CISO in Retail Banking, Media Broadcasting and Enterprise Software industries. Balancing engineering background with a pragmatic, people-centric approach. Credentials include AIGP, CISSP, CISM, CCSP, CIPP/e, and Lead Implementer ISO/IEC 42001:2023 (AIMS). **Bot vs. Bash: How Modern Threat Actors are Actually Using AI** **Abstract:** Generative AI has rapidly shifted to become a defining element of the modern threat landscape. This has resulted in great interest from a cybersecurity perspective and numerous discussions about its potential impacts. However, moving beyond speculation, this session presents real-world observations from the front lines of threat intelligence to demonstrate exactly how adversaries are utilizing these tools today. We will explore how state-sponsored APTs and financially motivated actors integrate Large Language Models (LLMs) to sharpen the quality of social engineering, reconnaissance, and code generation. Rather than focusing on “super-malware” theories, we dive into specific “in the wild” use cases to provide defenders with the practical context needed to identify and counter AI-augmented threats within their own environments. **Bio:** Daniel Kapellmann Zafra is Technology Strategy Lead in Google Threat Intelligence, where he designs the future of large-scale investigative frameworks. With a specialized background in Information Operations (IO) and Cyber-Physical threats, Daniel has spent his career working with different threat intelligence teams to scale the breadth and depth of intelligence investigations. He currently spearheads initiatives at the intersection of AI and threat intelligence, focusing on how emerging AI ecosystems redefine both the threat landscape and the efficiency of modern cybersecurity. A former Fulbright Scholar and University of Washington Informatics alumnus, Daniel was previously recognized by the Kaspersky Academy Talent Lab for innovation in security architecture.

## 🎨**Activity for EXPATS & English Speakers** ☕ Are you an art enthusiast living in or around **Amersfoort, Hilversum, Utrecht, Nieuwegein, IJsseltein, De Bilt and the rest of cities of the Utrecht's province** who love painting or drawing? Maybe you've felt the joy of creating but struggled to find others who share your passion and speak **ENGLISH**? **You're not alone! 😉** ✨✨✨✨✨✨✨ ## 🖌️**About this event** You will meet other Art Lovers like you to Draw, Paint and have some drinks Together ! Our events are not just about sketching or creating art—they’re about building connections. Every two weeks, we meet at a café to have a relaxing time drawing a painting. Please keep on mind that **ENGLISH i**s the official language we will use to integrate everyone in our conversations. ⭕⭕⭕➡️ **IMPORTANT ⬅️** ⭕⭕⭕⭕ ### 👩🏻‍🎨**Book formally your Seat 🪑via [WHATSAPP](https://bit.ly/3BXXE0f)** **If you want to confirm officially your attendance and separate your seat🪑. Book your seat in meet-up, and contact us via [WHATSAPP HERE](https://bit.ly/3BXXE0f) to receive more information on the address of our activities.** **Thanks a lot for your understanding!** 💐🥰 ✨✨✨✨✨✨✨ ### 👩🏻‍🎨**How Does It Work?** This event is simple, this initiative takes 2 Hours. Most of the participants use pencils, water pencils or watercolours. Main aim is to socialize while we draw. There will be plenty of time to talk and get to know each other. We have to mention that this event is suitable for all levels. Many have started to draw in our event actually. Also it is very important that you **[JOIN US AT OUR WHATSAPP COMMUNITY](https://bit.ly/3BXXE0f),** to stay up to date on our upcoming events and participate in our Drawing and Painting Contests! **👉: [https://bit.ly/3BXXE0f](https://bit.ly/3BXXE0f)** 🍀 ✨✨✨✨✨✨✨ ### ☕**Where?** We will meet in different cafes mainly in the *center of Amersfoort ( and some occasions in other cities around)*. I will inform you of the exact place some days in advance this event. The place will depend on the number of attendees. ✨✨✨✨✨✨✨ ### **🎟️ What is included?** 🟢 **2 HOURS TO HAVE FUN!** 🟢 **15 mins warming-up creative activity and paper material**🖌️🎨 🟢 New friendships and **conversations in ENGLISH** in a relaxed atmosphere 🟢 **Souvenir picture** with you and the rest of Art Lovers 📷 🟢 Exclusive **access to our Art Lovers Community** on which you will receive: ***\~\~\~ Drawing challenges,*** ***\~\~\~ Training content,*** ***\~\~\~ FREE Entries only to members*** ***\~\~\~ Drawing Competitions*** 🟢 Time to **create alongside fellow artists and amateurs** 🟢 The freedom to **work at your own pace** 💃🕺🎈 ✨✨✨✨✨✨✨ ### 🖼️**Art Materials?** Bring your own practical art materials to be adaptable to sketch on a coffee table. Like your sketchbook, pencils, watercolor, markets, pencils, your Tablet..etc ✨✨✨✨✨✨✨ ## **See you to Paint, Draw, and drink together!🌟☕🍷🍪🍰**

Couldn't make Knowledge? Or want to debrief with fellow attendees? Join us for a Knowledge '26 recap, insights sharing, a couple rounds of golf, and fun at Topgolf. As always, drinks and food will be provided. More details to come — mark your calendar, RSVP, and save your spot today!

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

Please see below for details of our April 15 event. Visit our [Eventbrite](https://www.eventbrite.ca/e/owasp-toronto-april-2026-tickets-1986283430209) page to RSVP! APIs power virtually every web and mobile application, accounting for over 80% of all Internet traffic. And APIs are under attack. Gartner states APIs have become the “most frequent attack vector," resulting in hundreds of highly successful, high profile breaches. This API security presentation covers 1) why attackers love APIs, 2) real-world breaches (and how they map to the OWASP API Security Top 10), and 3) best practices to keep APIs secure.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Join us for an engaging panel discussion on **AI Agentic Coding** and how autonomous AI systems are transforming the way software is built. Experts in AI, software engineering, and developer tools will share insights on how agentic AI—systems that can plan, reason, and execute coding tasks—is reshaping modern development workflows. The discussion will cover topics such as AI-assisted development, productivity gains, challenges around reliability and governance, and what the future of software engineering may look like with AI agents as collaborators. Whether you’re a developer, tech leader, or AI enthusiast, this session is a great opportunity to learn, ask questions, and explore how agentic AI is redefining coding

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!