Defcon

***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

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\.

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.

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.

New Year, New Sport! 🏐 ​Whether you've never played volleyball before or it’s been many years since you last hit the court, you are very welcome to join our Beginner Group! ​We train every Monday at 9 PM at Gymnasium Bibian Mentel in Zeeburgereiland. ​Come learn the basics, get moving, and meet new people in a fun, relaxed environment. ​Get more info here: ​WhatsApp Group: https://chat.whatsapp.com/EnPEK1bHLiTGdpqz6Vtbm4 ​Instagram: @brazucavolley

**This is an event organized by Topswim, an ATAC partner. ATAC-Members recieve a 40€ discount on a 185€ course.** **Basic Open Water Course 2026** **A total of 6 one-hour training sessions, each with a different theme.** **Beginner open water swimmers learn the ins and outs of outdoor swimming, such as navigation, water safety, and equipment handling. Advanced swimmers can learn to swim more efficiently, get more out of their strokes, and improve their fitness. The course is ideal for recreational outdoor swimmers, or participants in a city swim or triathlon. We also use video to explore your potential improvements. If you have any questions, please contact us at michiel@topswim.nl.** **6 Monday evenings 7:00 PM - 8:00 PM May 25, June 1, 8, 15, 22, and 29** **KNSM-Eiland, Amsterdam** **6 Wednesday evenings 7:00 PM - 8:00 PM May 27, July 3, 10, 17, 24, and 1** **Steigereiland (IJburg/East)** **6 Thursday evenings** **Watersportcentrum Sloterplas (West) 7:00 PM - 8:00 PM May 28, July 4, 11, 18, 25, and 2** **Course fee** **€185. You can register directly by emailing michiel@topswim.nl. There is a maximum number of participants, so be on time! To participate, you must be able to swim at least 150 meters of front crawl in a pool and have a wetsuit and a buoy.** **HBSF series** **Have you already taken the course, or are you an advanced open water swimmer? Then you can also participate in the HBFS (Harder, Better, Faster, Stronger) series.** **In these training sessions, we delve deeper into open water techniques, endurance, and race tactics. Expect less theory and more swimming! This series runs from 8:00 PM to 9:00 PM, following the Basic Course hours on Wednesdays and Thursdays, at the same location.** **Change training days?** **That's no problem! You can change days/locations twice during the course period.** **For questions please reach out! DM +31626034210 or meet me at the tracks or pool.** **I hope to see you in the open water!** **Best, Michiel**

This is one for the early birds, but gets you back into the city by 7.45-8am, so you can still make it in time for work. Please note: the route is the ordinary Ronde Hoep for now, as there are currently roadworks happening near Nes aan de Amstel. **Route:** https://connect.garmin.com/modern/course/447404376 **Afterwards:** Coffee at Coffee Company https://maps.app.goo.gl/WDTpAJ6TurQwFANd8 **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\. \- The end of the route is a coffee stop that opens at 7:30am so you can socialize

**Welcome to the 23rd edition of Locals Meet Expats!** Come alone, bring a dish and leave with real connections. On Saturday, May 30th, I am hosting a special **potluck dinner**, but this is much more than an ordinary dinner party. We are creating an evening where meaningful conversations come first. **What to expect?** **Share your culture** Bring a delicious dish from your home country and discover flavors and stories from around the world. **Genuine connections** Every 30 minutes, we switch tables, making it easy to meet new people throughout the evening. **Skip the small talk** Thoughtful question cards cards will spark conversations about life, inspiration, dreams, philosophy and personal experiences. **Come as you are** Everyone joins alone, so there is no need to worry you will not be the only one coming by yourself. **A warm and safe atmosphere** I will make sure the evening feels open, respectful and welcoming. Join us at the table, share stories, enjoy good food, and leave with new friendships and unforgettable conversations. **Curious about previous events? Explore the photo albums below (available on desktop view only).** **Practical details** * Doors open at 18:00 * Venue: Boekencafé Libertas, Klarendalseweg 477-1, Arnhem * 20 min walk from Arnhem Central * 7 min walk from Arnhem Velperpoort * Ask the staff where to find us. Bring a smile and join us for an evening where friendships grow, business ideas spark and real-life connections happen. Warm regards, Julia

𝗗𝗮𝘁𝗮 𝗧𝗵𝘂𝗿𝘀𝗱𝗮𝘆 𝗶𝘀 𝗯𝗮𝗰𝗸 — 𝗮𝗻𝗱 𝘁𝗵𝗶𝘀 𝗼𝗻𝗲 𝗶𝘀 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 🌱 On **Thursday, May 28**, we are proud to host a special **Data Thursday** edition at **B. Amsterdam**: **Cloud & Climate Pub Quiz** ☁️🌍 This will not be a classic sit-back-and-listen meetup. This is a **taste-of-tech game night** where #climate, #cloud, #AI, #CO₂, #costoptimisation and a bit of controlled chaos come together in one big interactive quiz. At **Data Tribes & EcoVerum,** we believe that climate impact, sustainability reporting and regenerative transformation all start with better data. This evening brings that belief to life in the most Data Thursday way possible: with sharp questions, practical insights, team play, pizza and drinks. Your personal quiz masters for the evening: 👷‍♂️ **Henk van der Valk** Platform & Intelligence Architect 👷‍♂️ **Marcel van der Kuil** Data & AI Impact Engineer Together, Henk and Marcel will join forces as **Buurman & Buurman for Cloud & Climate**, fixing things one quiz round at a time. Think climate science, cloud optimisation, AI-assisted answers, sharp questions, practical insights and probably a few moments of **“A je to!”** along the way. The evening includes three rounds: 🌍 **National Climate Quiz** 🌡️ **Climate Interactive EN-ROADS simulator** ☁️ **Cloud optimisation: cost, CO₂ and Scope 3** Bring your laptop. Teams will compete for points, prizes and eternal Data Thursday glory. AI is allowed, but beware: some answers need to be explained in your own words. 𝗣𝗿𝗼𝗴𝗿𝗮𝗺 **// 18:00** — Doors open + pizza **// 18:30 – 19:15** — First round **// 19:15 – 20:00** — Second round **// 20:00 – 20:45** — Third round **// 20:45 – 21:00** — Wrap-up / evaluation **// 21:00 – 21:30** — Drinks & networking **// 21:30** — End 📍 **The Henry, B. Amsterdam — B.1** Johan Huizingalaan 763a, Amsterdam A big thank you to **B. Amsterdam** for once again supporting the Data Thursday community. Because without reliable data, there is no reliable climate action. And this time, we are testing what grows when cloud, climate, AI and community come together. Greetings, Data Tribes Inc & EcoVerum

NOTE: this is an **in-person event** in Amersfoort! We are a bunch of Clojure enthusiast who meet every month to discuss every thing Clojure. Today we'll have a presentation around SSR web development, with practical examples and experiments. Further, we don't have scheduled any special activity for tonight, so here's some ideas of what we would love to hear from you: * have you started new projects with Clojure(Script)? Tell us all about it! * did you author or started using cool new libraries? Plug your laptop to the projector and show us! * ever wanted to learn more about some topics or are you just anewcomer to the Clojure world? Just ask, we're happy to help you out! See you! p.s.: food is not offered tonight, make sure to come with a full stomach!

🎟️ **[REGISTER FOR THIS EVENT HERE](https://www.ministryoftesting.com/chapters/mot-netherlands/events/mot-netherlands-280526)** 🎟️ **The MoaCM ... which sounds a bit like Mokum (nickname for Amsterdam).** Every tester knows there’s always more going on beneath the surface: the unspoken questions, the unexpected discoveries, the “wait… what just happened?” moments that shape our craft. Our next chapter meeting leans right into that spirit. We’re pulling back the curtain on the things we don’t always talk about, the stories that don’t make the slides, and the hidden agendas that quietly steer our testing journeys. We offer you an evening full of curiosity, connection, and a few delightful surprises. Two awesome speakers will take the stage with talks crafted especially for this event. Sorry, no spoilers, but trust me, you will want to be in the room when they drop their insights. Add great food, lightning talks, stroopwafels, and the kind of hallway conversations that only happen at Ministry of Testing gatherings, and you’ve got yourself a night worth marking in bold on your calendar. **PROGRAM:** **17:00 – Arrival & Grabbing a Seat** Ease in, find your spot, and enjoy your complimentary stroopwafel. Consider it the warm‑up round for your brain. **17:20 – Opening Remarks** A quick kickoff to set the tone and spark your curiosity. **17:30 – Talk 1: Sanne Visser** The wheel is spinning but the hamster is stuck. (Knowing Sanne, expect something sharp, thoughtful, and delightfully unexpected). **18:30 – Dinner** Fuel up with good food, because even testers need to keep their internal combustion engines running smoothly. **19:30 – Talk 2: Veerle Verhagen** tba… (And yes, Veerle will absolutely bring her ever-present energy, brilliant insight, and probably a twist we will not see coming). **20:30 – Closing & Lightning Talks** A few final thoughts from your chapter lead, followed by the community taking the mic. Share an idea, pitch a question, or drop a testing gem … lightning‑style. **Followed by – Networking Drinks** Stay, chat, unwind, and connect. No fixed end time; we leave when the energy fades or the building politely tells us it’s time to go. 🎟️ **[REGISTER FOR THIS EVENT HERE](https://www.ministryoftesting.com/chapters/mot-netherlands/events/mot-netherlands-280526)** 🎟️

Every AI pipeline starts with one question: where does the data come from? In this hands-on workshop, we'll answer that question using Scrapy, one of Python's most powerful web scraping frameworks. You'll go from a blank project to a working spider that harvests structured data from the web, ready to feed into your next AI or data science project. We'll cover: • Scrapy vs. lighter tools (Requests & Beautiful Soup), and when each makes sense • Extracting data from HTML using CSS selectors • Following links and handling pagination at scale • Writing clean, structured output to a file • The ethical and legal side of web scraping Bonus (Gold Star): a chapter on scraping JavaScript-rendered pages for those who want to go further. 🐍 Python basics assumed — no prior scraping experience needed **Agenda** \- 18:00 Doors Open \- 18:30 Start of the Workshop \- 20:15 Workshop Closing & Announcements \- 20:30 Networking \- 21:00 Event Closing **GitHub Repo** [Scalable Data Harvesting for AI](https://github.com/pyladiesams/scalable-data-harvesting-for-ai-may2026) **Stream** [YouTube Stream](https://www.youtube.com/watch?v=0wqXbShaAvU) ​**📧 Contact** Are you interested in speaking at one of our events? Have a good idea for a Meetup? Get in touch with us at [amsterdam@pyladies.com](mailto:amsterdam@pyladies.com) ​💬 Find us on the PyLadies Global workspace: 1. ​[https://slackin.pyladies.com](https://slackin.pyladies.com/) enter your email address. Accept the email invitation 2. ​Go to workspace [https://pyladies.slack.com](https://pyladies.slack.com/) 3. ​Join channel #city-amsterdam 4. **Scalable**

Beste luisteraars, **Voor de eerste keer organiseren we op veler verzoek een meetup in het Oosten. We gaan dit keer naar Arnhem.** Aan de saté en ribs van Jan is bijna niet te tippen, maar alle ondernemers in Foodhall kunnen er ook wat van. Meer dan 10 restaurants bieden een complete wereldkeuken naar keuze. Dit wordt een speciale editie van Satoshi Radio Meetup. We vieren 28 mei namelijk 🥳 **[12 jaar Arnhem Bitcoinstad](https://arnhembitcoinstad.nl)**! De bitcoinstad van Nederland met meer dan 65 winkels en horecagelegenheden waar je met je bitcoin terecht kan. Overal betaal je eenvoudig via ⚡Lightning. Deze meetup wordt wederom mede-mogelijk gemaakt door **[Blockrise](https://www.blockrise.com)**. Het eerste drankje krijg je van Jos 🍻. **Neem een vriend of vriendin mee**. Wel even aanmelden ajb. **Wil je mee eten?** Dat kan! Bestel je eten bij een van de 10+ foodstands naar keuze. Nadat je hebt besteld ontvang je een buzzer die afgaat op het moment dat het gerecht klaar is. Als de buzzer afgaat, kun je de bestelling ophalen bij de foodstand. Zo kun je samen genieten van de heerlijke culinaire gerechten die Foodhall Arnhem te bieden heeft. De bar biedt een ruime selectie aan drankjes en cocktails die passen bij de gerechten van de food stands. Gemiddeld genomen heb je voor €30 heerlijk gegeten. Datum/tijd: 28 mei 2026, 17:00 uur Locatie: **[Foodhall](https://foodhallarnhem.nl)**, Rijnkade 49, 6811 HB Arnhem Eten: Keuze uit meer dan 10 verschillende wereldkeukens. Kosten: Deelname is gratis. Je betaalt enkel voor je eigen eten en drinken. Betalen: Pin, contant of bitcoin (lightning). **Meld je aan** via deze meetup pagina zodat we weten hoe veel mensen er komen. Er is een beperkte capaciteit beschikbaar. Zo weten we zeker dat we niemand teleur hoeven te stellen. Tot dan, Bert, Bart, Peter en Mike

**From DLP Best Practices to Government Cloud Security with Microsoft Purview** **Datum, tijd, locatie** 📅 Datum: Vrijdag 29 Mei 2026 🕐 Tijd: 12:30 - 17:00 📍 Locatie: RawWorks, De Vork 2, 3984 PA Odijk **Introductie** Tijdens deze editie van de Dutch Data Security & Compliance Community Meetup #8 staat de realiteit van data security in zowel commerciële als publieke omgevingen centraal. We combineren twee krachtige praktijkperspectieven: de implementatie van Data Loss Prevention (DLP) binnen organisaties en een grootschalige cloudmigratie binnen de publieke sector met Microsoft Purview. Deze middag draait om concrete ervaringen, technische en organisatorische uitdagingen en lessons learned uit de praktijk. Verwacht inzichten die direct toepasbaar zijn om jouw data security en compliance aanpak te versterken. **Wat kan je verwachten?** **Sessie 1 – DLP in de praktijk: Best practices en lessons learned from the field** Martijn van Geffen (Microsoft) DLP binnen Microsoft Purview wordt steeds complexer door de opkomst van AI en het gebruik van meerdere enforcement engines. Traditionele aanpakken schieten tekort wanneer data via AI-tools wordt gedeeld, gekopieerd of geüpload. In deze sessie deelt Martijn van Geffen (Microsoft) praktijkervaringen met DLP-implementaties, met speciale aandacht voor DLP for AI. We bespreken hoe verschillende enforcement engines (Endpoint, Edge, Network, Cloud Apps) zich gedragen bij AI-scenario’s zoals copy/paste en file uploads — en waarom dit vaak leidt tot onverwachte pop-ups en policy-interacties. Daarnaast gaan we in op het verbeteren van de gebruikerservaring (policy tips, Outlook customizations, oversharing notificaties) en het reduceren van false positives. Je krijgt concrete best practices voor het ontwerpen van effectieve policies, het kiezen van de juiste engine voor AI-use cases en het beheersbaar maken van DLP in een moderne Microsoft 365-omgeving. **Customer case – Data Security x Heerenveen** Femke Helgering (RawWorks) Ronald Hofstra (Gemeente Heerenveen) Hoe beveilig je gemeentelijke data tijdens een cloudmigratie naar Microsoft 365? In deze customer case staat het data security traject van Gemeente Heerenveen centraal. Na de migratie is gestart met de implementatie van Microsoft Purview-functionaliteiten zoals Sensitivity Labels, Data Loss Prevention (DLP) en Data Lifecycle Management. Dit bracht zowel technische als organisatorische uitdagingen met zich mee op het gebied van governance, adoptie en bestaande werkwijzen. Femke Helgering (RawWorks) en Ronald Hofstra (Gemeente Heerenveen) delen de praktijkervaringen, keuzes en lessons learned uit dit traject. Je krijgt inzicht in hoe security en gebruiksvriendelijkheid in balans kunnen worden gebracht binnen een overheidscontext. **Agenda** * 12:30 – Inloop met koffie en lunch * 13:30 – Opening door DDSCC * 13:45 – Introductie door RawWorks * 14:00 – DLP in de praktijk: Best practices en lessons learned from the field, Martijn van Geffen, Microsoft * 14:45 – Pauze * 15:15 – Customer case - Data Security x Heerenveen, Femke Helgering & Ronald Hofstra, RawWorks & Gemeente Heerenveen * 16:00 – Ronde tafel gesprekken * 16:30 – Borrel & netwerken (tot 17:00 uur) **Additionele informatie** **Parkeren** Bezoekers kunnen parkeren bij de parkeerplaats van de Sint Nicolaas Kerk: Sint Nicolaaslaan 1, 3984 JA Odijk Vanaf daar is het enkele minuten lopen naar de locatie van RawWorks.

Join the CONNECTED Westerville Mastermind Group for a dynamic afternoon of B2B networking! This event is perfect for professionals looking to expand their business connections, share insights, and foster collaboration within the community. Whether you are a seasoned entrepreneur or just starting out, this event offers a valuable opportunity to exchange ideas, build relationships, and grow your network in a supportive environment. Connect with like-minded individuals, explore potential partnerships, and discover new opportunities for professional growth. Don't miss out on this chance to enhance your business network and take your career to the next level with CONNECTED Westerville Mastermind Group! We meet the 4th Monday of every month from 11am-1pm. Welcome and general networking from 11am - 11:30am with core meeting 11;30 - 12:30 and a final round of networking from 12:30 - 1pm.

**How to take control of your subconscious and harness its power!** Join us for an eye-opening lecture where the speaker will break down complex ideas in a clear and practical way. You’ll gain insights into: ✅ The true definition of the subconscious ✅ How it generates unwanted emotions ✅ Its real purpose and function ✅ What determines the pressure it exerts on you And the most important topic: **How do you take control of your subconscious!** But this isn’t just another lecture where you sit and listen passively. It’s interactive and engaging—you can ask questions at any time. 📅 Reserve your spot now! Seats are limited, so don’t wait too long to sign up. Location: 1266 Dublin Rd, Columbus, OH 43215 Hosted by the Hubbard Dianetics Foundation

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

Feeling down? Sometimes depressed? Can't focus? Negativity & stress? Recent losses? Creativity in career and personal life hindered by mental blocks? Sometimes we never fully recover from traumatic experiences. Whether it was yesterday, last week or a year ago, traumatic experiences - a loss of a loved one, losing a job, a breakup - can leave you scarred. You talk about it and feel a little better, but it never goes away. After you hang up the phone, it's still there; the sadness, the cloud, the over-thinking, the worry, the guilt. You try to focus, but you're blocked. You try to look forward into new experiences, new relationships but a cloud is hanging over you, casting a shadow on what you once considered a bright, cheerful future. What happened to your courage? Your strength of character? You're 'why not' attitude? Whoever said 'time heals' must have had a special time machine, because after weeks, months, years, you're wondering - when exactly does that kick in? Sometimes it seems like drinking or drugs are the way to go. But they wear off, and now the problem is still there with added side effects from the drugs. At this free local Meetup event we will talk about: * What causes grief, anxiety and depression to become chronic. * Is it possible to regain your joy and happiness even after traumatic experiences? * How to break away from negativity and focus on the future * What are the steps to take to get control of your mind and your emotions? Learn about a safe, gentle, do-it-yourself counseling that can be done in the comfort of your own home. Let's explore safe, effective solutions for healing from traumatic experiences. Be sure to click on the red "Attend" button below to come to the event. We look forward to seeing you there. This group is sponsored by the Dianetics & Scientology Life Improvement Center.