OWASP

It all sounded straight forward. Then the project started... Join us for an informal evening with fellow Agile practitioners, Scrum Masters, project managers, coaches, and anyone working with change, delivery, or transformation. We’ll meet at a local pizzeria, have some good food, and talk about the things that usually come up once the theory meets reality — challenges, lessons learned, different approaches, and questions we’re still figuring out. Nothing formal, just a chance to exchange ideas, meet people from the community, and have interesting conversations. Because some of the best discussions don’t happen in meeting rooms. They happen in the second floor private room of a pizzeria. 🍕 **The venue:** Da Raffaele brings a slice of Naples to the heart of Zürich's Altstadt. Think 48-hour dough, a 500°C wood-fired oven, and an amazing pizza. Two minutes from Central, close to HB — easy for everyone coming from across the city or the S-Bahn.

We keep it a fun and practical language exchange. First thing you'll notice is we match you with **fluent speakers** in your target language. **Event Flow** **18:45–19:15** → Registration Scan the QR code to tell us your fluent and target languages. **19:15–20:30** → Language Exchange Powered by our **Learn by Flipping** method. **20:30 onwards** → Stay, chat, or head off — totally up to you 😉 **What is "Learn by Flipping"?** **Practical** → You speak with fluent speakers in your target language. **Collaborative** → Every 5 minutes, you switch roles: learner ↔ helper. **Fun** → Small groups, good energy, and a bar atmosphere — without the chaos. Save some time by [Signing up to our web app](https://fliplingoes.com/) beforehand. **Entrance:** 10 CHF (includes a tapa) Please note, event registration closes after 7:15PM

Apéro Mensuel

The **Digitec Galaxus Product Development Meet-Up** is back — this time diving into **recommender systems** with two talks bridging data science and engineering practice. **Talk 1: Insights from Building and Operating a Recommender System for Migros Supermarkets** *Max Nolte – Data Scientist & Team Lead at Supermarkt IT, Migros-Genossenschafts-Bund* When you think of a Migros supermarket, you don't usually think about recommender systems. Over the past four years, my team and I have built and operated the engine behind personalized Cumulus coupons and a few other digital touchpoints. I'll share how it works, why we invest in it at a brick‑and‑mortar retailer, and what we've learned, covering data, models, measurement, and the practical realities of running it day to day. **Talk 2: Recommendations at Digitec Galaxus — From Data Science to Engineering Practice** *Michael Weiss, Senior Software Engineer & Robert Rosenbach, Senior Data Scientist – Digitec Galaxus* How do you go from a promising model to a recommender system that is fast, scalable, and maintainable in production? We will walk through the Digitec Galaxus recommendation stack end to end: the engineering architecture that keeps recommendations snappy and reliable, and the data-science side of model training — what to optimize for, which input signals matter, and the trade-offs involved in both. The two presentations will take roughly a combined hour, leaving plenty of time for discussions, questions, and exchange afterwards over drinks and snacks. Whether you come from a software engineering, data science, product, or any other background — we'd love to have you join us!

2 courts

Hare is Keys to the Treasure. Since Zurich Marathon weekend is approaching, this'll be an easy and short trail with a focus on fluid replenishment :) **Where**: Brauerei Oerlikon, in Oerlikon. Look for English speakers wearing running gear. **When:** We'll meet at 6:50 pm to start at 7:00 pm. There's a charge of CHF 5 for participating, which covers all you can drink beer/cider (and non-alcoholic alternatives) plus snacks afterwards. **All Welcome:** If you are new, curious, and want to get out of the house, stretch your legs, talk shit, enjoy a drink, and hopefully a laugh, then here's what you need to know: • We are a social running/walking group, physical fitness is not required, but a sense of humour is useful. • The aim is to find the '*Beer Stop*' at the end of the '*trail*' and have fun. • 'True Trail' is typically 4-7 km. Some will go less (especially those walking or walk/running), and some over-achieving fast runners will go further. • The '*Hare*', which changes each event (along with location), cleverly lays the trail (typically with flour marks) so that everyone reaches the end at the same time. • There is always a place to deposit your bag and sometimes a place to change. • **After Trail**, we group for \~20-40 minutes for drinks, snacks, and some fun. This '*Circle*' is typically outside, so leave something warm in your bag in winter (and bring a flashlight when it's dark). If you don't want to stand around drinking afterwards, you can head home. We occasionally all go to a restaurant afterwards. **Why bother leaving your warm & dry sofa?** If you enjoy getting outside, being around people, and doing something a bit different, you will probably enjoy hashing. Exercise is important, and this is probably the least boring way to get it. 'Hashing' and the idea of some physical activity to work up a thirst, have been around for almost 90 years and there are groups (*Hashes*) in most major cities. Its humor and 'traditions' can be explored on the internet - **or you can just come along and find out.** *See you there.* We are of many nationalities, all ages, full of misfits and idiots (at least there is no one taking themselves seriously!) and always welcome newbies 'Virgin Hashers' and visitors from other groups. For more about Zürich Hash House Harriers, check out [www.zh3.ch](http://www.zh3.ch/) ( [http://www.zh3.ch/](http://www.zh3.ch/) )

Join us for an exclusive[ Signature](https://www.signaturebahnhofplatz.ch/en-gb) Open Day featuring guided tours, a tasting of our Italian catering, and a first look at our premium offices, modern meeting rooms, flexible event spaces, and the rooftop restaurant — all located in the heart of Zurich

We are excited to invite you to join our cyber security breakfast where we share our knowledge and experience in the constantly evolving field of cybersecurity.

Workshop-Details Wo: Zürich Hauptbahnhof Meeting Point (Big Clock) Zeit: 19:30 – 22:15 Uhr Was du lernen wirst – Fotografieren bei wenig Licht – Echte und ungestellte Augenblicke des Nachtlebens festhalten – Die Schönheit der Schwarzweiss-Strassenfotografie entdecken (natürlich kannst du auch in Farbe fotografieren!) Wir beginnen den Abend mit einem Drink in einem nahegelegenen Café — natürlich auf meine Einladung! Dies ist die perfekte Gelegenheit, sich kennenzulernen, Erwartungen auszutauschen und individuelle Wünsche für den Workshop zu besprechen. Deine Teilnahme kostet 150 CHF. Bitte melde dich direkt über meine Website an und sichere dir deinen Platz: www.katjabouwman.com/workshops Erst nach Zahlungseingang ist dein Platz gesichert! Workshop Details Where: Zurich Hauptbahnhof Meeting Point Time: 7:30 — 10:15 PM What you’ll Learn – Shooting in low light – Capturing candid nightlife moments with confidence – Exploring the beauty of black and white street photography (of course, you can shoot in color too!) We’ll kick off the evening with a quick drink at a nearby café — my treat! This is a great chance to get to know each other, share expectations and discuss any specific wishes you might have for the workshop. Your participation costs 150 CHF. Please register directly through my website to secure your spot: www.katjabouwman.com/workshops More info on www.katjabouwman.com/workshops or visit my Instagram account katja_zuerich

We are excited to invite you to join our cyber security breakfast where we share our knowledge and experience in the constantly evolving field of cybersecurity.

Workshop-Details Wo: Zürich Escher Wyss Platz Wann: 11.04.2026 Zeit: 10:00 – 13:00 Uhr Was du lernen wirst * Lerne, wie du natürliches Licht und Schatten meisterhaft einsetzt, um ausdrucksstarke Schwarzweiss-Bilder zu gestalten. * Echte und ungestellte Momente auf der Strasse mit Selbstvertrauen festhalten * ICM (Intentional Camera Movement), eine kreative Technik, die absichtliche Kamerabewegungen mit einer langen Verschlusszeit kombiniert, um abstrakte, malerische Bilder zu schaffen * Die Schönheit der Schwarzweiss-Strassenfotografie entdecken Deine Teilnahme kostet 150 CHF. Bitte melde dich direkt über meine Website an und sichere dir deinen Platz: www.katjabouwman.com/workshops Erst nach Zahlungseingang ist dein Platz gesichert! Workshop Details Where: Zurich Escher Wyss Platz When: 11.04.2026 Time: 10:00 — 13:00 AM What you’ll Learn * Master how to use natural light and shadow to create striking black and white images * Capture candid street moments with confidence * Embrace ICM (Intentional Camera Movement), a creative technique that combines deliberate camera movement with a slow shutter speed to create abstract, painterly images * Discover the timeless beauty of black and white street photography Your participation costs 150 CHF. Please register directly through my website to secure your spot: www.katjabouwman.com/workshops More info on www.katjabouwman.com/workshops or Visit my Instagram account katja_zuerich

Open Sharing Circle ✨ Dieser Circle findet auf Deutsch statt. Wir kommen zusammen, um im Moment präsent zu sein und uns so zu zeigen, wie wir wirklich sind. Die Intention ist, in einem sicheren und vertrauensvollen Raum zu teilen — Gedanken, Emotionen, Ziele, Meinungen — alles, was sich für dich im Moment lebendig anfühlt. Niemand muss etwas teilen, und jede\*r ist willkommen. ⸻ Worum geht es? • Stärkung von Selbstwahrnehmung & Selbstvertrauen • Persönliches Wachstum • Aufbau tiefer Beziehungen & Vertrauen • Menschen auf einer echten, menschlichen Ebene kennenlernen • Sich frei fühlen, sich authentisch auszudrücken ⸻ Circle-Vereinbarungen Frei & freiwillig Du darfst alles teilen, was du möchtest — und musst nichts teilen. Sprich aus deiner eigenen Erfahrung Teile aus deiner persönlichen Perspektive: deine Erfahrungen, Gedanken, Gefühle und Wahrnehmungen. Der Raumhalter kann dich dabei sanft unterstützen, indem er als Zeichen eine Hand auf die Brust legt. Respekt & Vertraulichkeit Wir begegnen uns respektvoll und ohne zu urteilen. Was im Circle geteilt wird, bleibt im Circle. Rede-Objekt Nur die Person, die das Rede-Objekt hält, spricht. Verständnisfragen sind willkommen. Redezeit & Raum teilen Nimm dir Zeit beim Teilen und lass gleichzeitig Raum für andere. Ratschläge & Unterstützung Sprich für dich selbst und gib Ratschläge nur mit Einverständnis. Bitte frage ausdrücklich nach, wenn du Ratschläge oder Unterstützung möchtest. Trigger & Emotionen Jede\*r ist für die eigenen Gefühle und Themen selbst verantwortlich. Starke Emotionen (z. B. Weinen) sind willkommen und werden respektiert. Unterstützung wird nur angeboten, wenn sie gewünscht ist. Eigene Bedürfnisse Kümmere dich selbst um deine Bedürfnisse (WC, Essen usw.) und respektiere den Gruppenraum. Raumhalter Das Organisationsteam wählt Raumhalter, die den Ablauf des Circles unterstützen und darauf achten, dass die Vereinbarungen eingehalten werden. Der Circle kann bei Bedarf sanft unterbrochen werden. Fokusrunde Der Raumhalter kann intuitiv eine kurze Fokusrunde initiieren, wenn es unterstützend wirkt. Mobiltelefone Bitte schalte dein Handy auf lautlos und nutze es nur für Notizen, falls nötig. Zeit Dauer: ca. 3 Stunden. Du kannst jederzeit gehen, idealerweise während der Pausen (etwa alle 45 Minuten). Nach dem Circle gibt es Raum, um zu bleiben, sich zu verbinden oder weiter zu teilen, wenn du magst. Teilnahme CHF 5 Basisbeitrag + freiwillige Kollekte. Damit unterstützt ihr Raummiete, Organisation und ermöglicht es uns, den Sharing Circle möglichst vielen Menschen zugänglich zu machen. Bezahlung: Bar vor Ort oder per Twint an +41 79 123 16 74.

Join in on this 5 hour walk from Frick AG to Mumpf AG through rolling hills and the blossoming cherry tree gardens of canton Aargau. (Expand here and read the description!) IN SHORT: * 08:00h meet under the «Blue Angel» * Hike of 5 hrs * Back in Zürich by around 16:00h-16:30h-ish. #################### DAY SCHEDULE: * 08:00h: Meet under the «Blue Angel» * 08:10h: IR36 from Zürich HB (dir. Basel) to Frick * 08:53h: Arrival at Frick and start of the hike * 14:45h or 15:45h: S1 from Mumpf (trains depart every hour at xx:45h) * Travel via Stein-Säckingen and IR36 back to Zürich HB * 16:00h or 16:30h: Back in Zürich HIKE DATA: * Distance: 19km * SAC classification: T1 (yellow signs) * Ascent/Descent: 600m/640m * Map: [https://schweizmobil.ch/en/tour/531383379](https://schweizmobil.ch/en/tour/531383379) HIGHLIGHTS: * Sunshine * The blossoming cherry trees * Photos from 2022: [https://www.meetup.com/zurich-hike-outdoor/photos/32330852/](https://www.meetup.com/zurich-hike-outdoor/photos/32330852/) * Photos from 2025: [https://www.meetup.com/zurich-hike-outdoor/photos/35265883/](https://www.meetup.com/zurich-hike-outdoor/photos/35265883/) LUNCH: * Picnic COST / TICKET: * Total ticket cost CHF 23.90 (w/HT) plus food/lunch/drinks Thereof: * Outbound Zürich HB to Frick = CHF 11.40 (w/HT) * Return Mumpf to Zürich HB = CHF 12.50 (w/HT) #################### DISCLAIMER: This is NOT a guided tour. Instead, this is a casual meetup of individuals responsible for their actions, choices and judgement. The hike is on your own risk and judgement. It is your own responsibility to assess the requirements and difficulty of this hike as well as your capabilities and fitness condition. You need to assure adequate equipment (boots, clothes,...) and insurance cover as if you were going by yourself. Also, check the weather forecast. If you are unsure about the hike, do research further detail e.g. on the internet. The organiser holds no responsibility for any injuries or death that might result directly or indirectly from this event. The organiser does not warrant on the accuracy of the description of the hike. By joining the hike, you accept the terms explained above.

Welcome to the Open Level Play Session. This session takes place every Saturday from 12:15 to 13:45 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability. This session will be at the Worthington Park Library in the Olentangy Meeting Room.

**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** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

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.

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

**About this Event** Curious how your secure coding skills stack up in real-world scenarios? Join OWASP St. Louis for a **hands-on Secure Code Training Tournament** sponsored by Security Journey. This is not a lecture... you’ll be actively solving real vulnerabilities in a live, interactive environment. **What to Expect** * Hands-on secure coding challenges (break/fix format) * Real-world vulnerability scenarios developers face today * Friendly competition with a live leaderboard * Prizes awarded to the **top 3 participants** **Important Details** * **Laptop required** (you’ll be coding) * Hybrid format: join **in-person or remotely** * Pre-registration required to access the platform * You do not need to be an experienced developer or security expert to participate. The challenges start easy and progress from there. Come have fun! In addition to RSVPing to this Meetup event, please register here to secure your spot and get platform access: [https://forms.office.com/r/VpTMjg8Smw](https://forms.office.com/r/VpTMjg8Smw) Whether you're a developer, AppSec professional, or just getting started, this session is built to sharpen real skills! (\* OWASP does not endorse or recommend commercial products or services, allowing our community to remain vendor neutral with the collective wisdom of the best minds in software security) **Event Details** 📍 **Location:** RubinBrown, 7676 Forsyth Blvd., Suite 2100, Saint Louis, MO 63105 🗓 **Date/Time:** April 28, 2026 / 6:00pm CST **Food and Drink will be provided!** Please RSVP so that we can plan accordingly. ℹ️ **Parking Directions:** * Google map to “North Lyle Avenue & Forsyth Boulevard, Clayton, MO 63105” Link: https://maps.app.goo.gl/WYqyZ3Jv9cUBBF289 * Enter the **Parking Garage #4** (from Forsyth Blvd) next to Dry Bar * **Pull a ticket at the gate** and proceed into the garage, turning right. * Up the ramp is visitor parking. **You may have to go up past the 6th floor.** * **Take elevator to \*L** (Lobby of Centene Plaza C) * Check in at the OWASP sign-in table in the lobby; you'll be escorted up * **Bring your parking ticket with you** to get validated at the meetup. **Who Should Attend** * Application & security professionals * Software engineers and developers * IT leaders and managers * Anyone with an interest in application security * You DO NOT need to be an OWASP member to attend! **About OWASP** The Open Worldwide Application Security Project (OWASP) is a nonprofit foundation dedicated to improving the security of software. Local chapters provide opportunities to learn, network, and collaborate with others in the field. Come to learn more and participate in OWASP Saint Louis - your voice will continue to help shape what OWASP Saint Louis becomes next.

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!