Application Security

Ready to add more fun, movement, and connection to your week? Come join our group dance classes at [Access Ballroom](https://studioaccessballroom.com/)! We have classes **every day except Tuesday**—that’s Monday, Wednesday, Thursday, and Friday at 7:50pm, and Weekends at 3:40pm. Visit our [Monthly Calendar](https://studioaccessballroom.com/class-schedule/) to view the group class Schedule. To sign up you can also download our APP that is in both the Google Play store and the Apple Store. Just look up Access Ballroom. Whether you’re a total beginner or already have some moves, you’ll fit right in! We always have multiple teachers on hand to guide every level, so everyone gets the attention they need. Our amazing environment and welcoming atmosphere are what make us one of Toronto’s premier Latin and Ballroom studios—and it’s why we have the most Google reviews in the city! Don’t just take our word for it—come experience the energy, laughter, and community for yourself. We can’t wait to see you on the dance floor!

**Beginner Drop-In Pickleball at the Miles Nadal JCC** New to pickleball? We’ve got the perfect session for you! Join us for **Beginner Drop-In Pickleball** at the Miles Nadal JCC — a welcoming and supportive environment for those just getting started with the game. Whether you're still learning the rules or building confidence on the court, this is a great opportunity to play, practice, and meet fellow beginners. *** 🏓 **Event Details:** **Location:** 750 Spadina Ave. (enter through the Spadina doors) **Check-In:** Please check in with security and stop by the front desk upon arrival. *** 🏓 **Registration & Payment (Required in Advance):** RSVP on Meetup does *not* guarantee your spot. To play, you must register and pay in advance through our registration system. 👉 **[Register online](https://app.amilia.com/store/en/miles-nadal-jcc/api/Activity/Detail?activityId=x5X7aDV)** 📞 Or call: 416-924-6211 **Limited to 18 players.** Once full, no additional players will be admitted. *** 🏓 **What to Expect:** * Designed for **beginner-level players** with some familiarity with the rules and scoring * Equipment available: borrow paddles and balls with a $20 cash deposit + valid ID * Friendly rotations so everyone gets a chance to play * Supportive and inclusive environment — no pressure, just fun and learning! *** Come ready to move, meet new people, and improve your game one rally at a time. We look forward to seeing you on the court!

Join Us for a Cashflow 101 Game Night! Come, meet new people, and learn valuable life skills while having fun! Whether you’re a seasoned player or completely new to the game, Cashflow 101 is a fantastic way to improve your financial literacy in a relaxed, social setting. Beginners are welcome — no prior experience needed. Let’s roll the dice, strategize, and make our way out of the rat race together!

**Drop-In Pickleball at the Miles Nadal JCC** Come play one of the fastest-growing sports in North America — right in the heart of the Annex! Join us for friendly, active Pickleball at the Miles Nadal JCC, just steps from Spadina Station. It’s a great way to stay active, meet new people, and have some fun! \*\*\* **🏓 Event Details:** **Location:** 750 Spadina Ave. (enter through the Spadina doors) **Check-In:** Stop by security and check in at the front desk when you arrive. \*\*\* **🏓 Registration & Payment (Required in Advance):** **RSVP on Meetup does *not* reserve your spot.** To participate in Drop-In Play, you must register and pay in advance via our registration system. 👉 **[Register online](https://app.amilia.com/store/en/miles-nadal-jcc/api/Activity/Detail?activityId=yKE8jJG)** 📞 Or register by phone: 416-924-6211 Space is limited to **6 players** on a first-come, first-served basis. Once full, no additional participants can be accommodated. \*\*\* **🏓 Other Info:** * Paddles and balls are available for loan at the front desk with a **$20 cash deposit and valid ID** * This session is intended for **intermediate players and above** — participants should have a solid understanding of Pickleball rules, scoring, and gameplay, and be comfortable with consistent rallies and court positioning * Courts are rotated regularly so everyone gets a chance to play * Welcoming, inclusive environment \*\*\* Come ready to rally, socialize, and have a great time on the court. We can’t wait to see you there!

**Meet new people over great food in a relaxed, social setting.** This is a small-group social dining experience for people who enjoy good food, good conversation, and expanding their circle in a natural way. Everyone attending is there to meet others — no pressure, no awkward networking. **What to expect** * A small group (usually 4–8 people) * A friendly, low-pressure atmosphere * Easy, natural conversation **How it works** We coordinate the group and reserve the table once attendees confirm. The venue and details are shared with the group beforehand. Just show up, order what you like, and enjoy the experience. Each guest covers their own food and drinks. To keep groups balanced and confirmed, seat confirmations happen through #dine: https://www.hashtagdine.com/

**Meet new people over great food in a relaxed, social setting.** This is a small-group social dining experience for people who enjoy good food, good conversation, and expanding their circle in a natural way. Everyone attending is there to meet others — no pressure, no awkward networking. **What to expect** * A small group (usually 4–8 people) * A friendly, low-pressure atmosphere * Easy, natural conversation **How it works** We coordinate the group and reserve the table once attendees confirm. The venue and details are shared with the group beforehand. Just show up, order what you like, and enjoy the experience. Each guest covers their own food and drinks. To keep groups balanced and confirmed, seat confirmations happen through #dine: https://www.hashtagdine.com/

⚠️日本語の案内は下にあります⚠️ 🎟Fee: $5 🌱Payment: Cash or E-transfer If you choose E-transfer, we recommend sending it before arrival to: ✉️canasianstation@gmail.com 🗣Event Style ・This event is 18 + only • Group-based language exchange • Small groups of 3–4 people • Use both Japanese and English to communicate 🕒Schedule 6:15 – 6:30 Check-in 6:30 – 7:10 Round 1 7:10 – 7:15 Seat change 7:15 – 7:55 Round 2 7:55 Wrap-up 💫Friendly Guidelines • Participants with 2 no-shows may be removed from future events • This is not a dating or matchmaking event. You cannot request specific people to talk to. If you have an NG (someone you prefer not to be matched with), please let us know in advance • Photos may be taken for Instagram and event pages. If you do not wish to appear in photos, please inform the organizer beforehand • Harassment, discrimination, sexual harassment, solicitation, or inappropriate behavior is strictly prohibited. If you notice any issues, please inform the organizer 🤝About This Event (Important) This is a group-based Language Exchange event. • One-on-one conversations with Japanese participants • Conversations with participants of a specific nationality ➡️are not guaranteed. ・Anyone who is interested in using Japanese and/or English is welcome to join, regardless of nationality. Thank you for your understanding🦄🌱 🎟️参加費：5ドル 🌱支払い方法：現金 or E-transfer ※E-transferをご利用の方は、到着前に ✉️Canasianstation@gmail.com へ送金していただくことを推奨しています 🗣️イベント形式 3〜4人のグループで、日本語と英語を使った国際交流🌏 本イベントは18歳以上限定です。 🕖タイムスケジュール 6:15 – 6:30 Check-in 6:30 – 7:10 第1ラウンド 7:10 – 7:15 席替え 7:15 – 7:55 第2ラウンド 7:55　解散 💫参加にあたって ・2回以上のNo-show（キャンセル無しの無断欠席）があった場合、以降の参加をお断りします ・本イベントはデート・マッチング目的の場ではありませんので、特定の「話したい人」の指定はできません。 ※NGの方がいる場合は、事前にお知らせください ・Instagram・イベントページ用に写真撮影を行う場合があります。写りたくない方は事前にお知らせください ・セクハラ、差別的発言、嫌がらせ、勧誘行為は固く禁止しています。もし見かけた場合は、主催者までご連絡ください 🫶イベントについて 本イベントは Language Exchange（言語交流）を目的としたグループ形式のイベントです。 ・カナダ人との一対一での会話 ・特定の国籍の参加者との会話 →これらを保証するものではありません。 ・日本語・英語を使って交流したい方であれば、国籍に関わらずご参加いただけます🦄🌱

**This is a ticketed event. Please register at [this link](https://luma.com/wbpv7ouu).** In this talk, Talha Paracha will present insights from his latest research on using language models for improving software security ("Hallucinating Certificates", to appear at ICSE 2026). Certificate validation is a crucial step in Transport Layer Security (TLS), the de facto standard network security protocol. Prior research has shown that differentially testing TLS implementations with synthetic certificates can reveal critical security issues, such as accidentally accepting untrusted certificates. Paracha et al. introduce a new approach, MLCerts, to generate synthetic certificates that leverages generative language models to more extensively test software implementations. Recently, these models have become (in)famous for their applications in generating content, writing code, and conversing with users, as well as for "hallucinating" syntactically correct yet semantically nonsensical output. The authors leverage two novel insights in their work: (a) TLS certificates can be expressed in natural-like language, namely in the X.509 standard that aids human readability, and (b) differential testing can benefit from hallucinated malformed test cases. MLCerts finds significantly more distinct discrepancies between the five TLS implementations OpenSSL, LibreSSL, GnuTLS, MbedTLS, and MatrixSSL than the state-of-the-art benchmark Transcert. ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​​​​If you can't make it in person, feel free to join the live stream starting at 6:30 pm, via [this link](https://www.youtube.com/@Trajectory-Labs/live).

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

Join us for an interactive workshop on mastering public speaking, covering essential communication skills, personal development, and professional development. Whether you are a beginner or looking to enhance your existing skills, this event is designed to help you gain confidence, improve your storytelling abilities, and conquer stage fright. Our experienced speakers will share practical tips, techniques, and exercises to help you become a more compelling and engaging speaker. Don't miss this opportunity to overcome your fears and unlock your full potential in public speaking.

\*\*Please note that this event requires your name and email address for QR code to get access to the building on the event day, you must register or else you will not receive a QR code for access\*\* [Link ](https://forms.office.com/r/7ZB00rZmBh?origin=lprLink)to Registration: https://forms.office.com/r/7ZB00rZmBh?origin=lprLink Agenda: Join us for the **GitHub Copilot Dev Days** event in Toronto! ​Whether you use VS Code, or any other tool in your stack, this session is GitHub‑centric but fully tool‑agnostic — come as you are, code how you like. ​**What to Expect** * ​Practical insights into real GitHub workflows and modern AI‑assisted development * ​Live demos from local engineers and community builders * ​A friendly, social environment to connect, share ideas, and learn from one another **Speakers:** -Bruno Capuano \- Cihan Cinar \- Kaan Turgut -Ehsan Eskandari

**Drop-In Pickleball at the Miles Nadal JCC** Come play one of the fastest-growing sports in North America — right in the heart of the Annex! Join us for friendly, active Pickleball at the Miles Nadal JCC, just steps from Spadina Station. It’s a great way to stay active, meet new people, and have some fun! *** **🏓 Event Details:** **Location:** 750 Spadina Ave. (enter through the Spadina doors) **Check-In:** Stop by security and check in at the front desk when you arrive. *** **🏓 Registration & Payment (Required in Advance):** **RSVP on Meetup does *not* reserve your spot.** To participate in Drop-In Play, you must register and pay in advance via our registration system. 👉 [Register online](https://app.amilia.com/store/en/miles-nadal-jcc/api/Activity/Detail?activityId=bN72APE) 📞 Or register by phone: 416-924-6211 Space is limited to **18 players** on a first-come, first-served basis. Once full, no additional participants can be accommodated. *** **🏓 Other Info:** * Paddles and balls are available for loan at the front desk with a **$20 cash deposit and valid ID** * This session is intended for **novice players and above** — participants should know basic rules and scoring * Courts are rotated regularly so everyone gets a chance to play * Welcoming, inclusive environment *** Come ready to rally, socialize, and have a great time on the court. We can’t wait to see you there!

Modern Microsoft Fabric projects often start with built‑in Git integration and deployment pipelines—but at enterprise scale, those capabilities alone are rarely sufficient. As environments grow in size and complexity teams need more advanced tools and patterns to manage Fabric artifacts reliably across development, test, and production. In this session, we will: \- Review common enterprise lifecycle challenges in Microsoft Fabric \- Introduce advanced DevOps tooling and automation patterns used to address them \- Walk through a realistic implementation pattern that shows how these tools fit together in practice This session is designed for data and platform engineers and architects responsible for operating Microsoft Fabric in production. If you’re already using Git integration and deployment pipelines and are looking to extend them with more scalable, repeatable, and enterprise‑ready CI/CD practices, this session will help you understand when and how to go beyond the defaults. *Come at 5:30 pm have some pizza and chat for a bit. The presentation starts at 6:00 pm.*

A diffuse harm hurts many people a little; a concentrated harm hurts one person a lot. Other things equal, diffuse harm seems less bad than its concentrated counterpart. For example, shortening a billion happy lives by a second each seems less bad than shortening one happy life by a billion seconds (\~30 years). But this attractive thought is surprisingly difficult to maintain. Although many problems for such a view are known, a particularly vivid difficulty arises in cases that involve a sequence of social positions, each very similar to the last, such as the Fortuna’s Wheel scenario. In such cases, it follows, from rather minimal assumptions, that diffuse harm is just as bad as its relevantly similar concentrated counterpart. In response, some may wonder whether the parity of diffuse and concentrated harms holds only in these special sequential cases. But it can be argued that the approximate parity of diffuse and concentrated harms extends well beyond such cases. Specifically, it can be argued that in many realistic cases, a diffuse harm will bring about an outcome approximately as bad as a relevantly similar concentrated harm. Diffuse harm is easily underestimated. Zach Barnett https://philosophy.nd.edu/people/faculty/zach-barnett/ Assistant Professor Department of Philosophy University of Notre Dame **About the Speaker:** Zach received his PhD from Brown University in 2018. He joined Notre Dame in 2023, moving from the National University of Singapore, where he taught for five years. Zach mainly studies ethics, practical rationality, and epistemology, and he hopes that his work is convincing, surprising, and easy to understand. Current research interests include collective action problems, aggregation and risk, and followability of norms. His representative publications include "Rational Moral Ignorance" (2021) in *Philosophy and Phenomenological Research*, "Why You Should Vote to Change the Outcome" (2020) in *Philosophy & Public Affairs,* "Philosophy Without Belief" (2019) in *Mind*, and "No Free Lunch: The Significance of Tiny Contributions" (2018) in *Analysis*. **\* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \*** This is a talk with audience Q&A presented by the University of Toronto's Centre for Ethics that is free to attend and open to the public. The talk will also be streamed online with live chat here [to be posted]. About the Centre for Ethics (http://ethics.utoronto.ca): The Centre for Ethics is an interdisciplinary centre aimed at advancing research and teaching in the field of ethics, broadly defined. The Centre seeks to bring together the theoretical and practical knowledge of diverse scholars, students, public servants and social leaders in order to increase understanding of the ethical dimensions of individual, social, and political life. In pursuit of its interdisciplinary mission, the Centre fosters lines of inquiry such as (1) foundations of ethics, which encompasses the history of ethics and core concepts in the philosophical study of ethics; (2) ethics in action, which relates theory to practice in key domains of social life, including bioethics, business ethics, and ethics in the public sphere; and (3) ethics in translation, which draws upon the rich multiculturalism of the City of Toronto and addresses the ethics of multicultural societies, ethical discourse across religious and cultural boundaries, and the ethics of international society. The Ethics of A.I. Lab at the Centre For Ethics recently appeared on a list of 10 organizations leading the way in ethical A.I.: https://ocean.sagepub.com/blog/10-organizations-leading-the-way-in-ethical-ai

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Are you passionate about supporting other men on their mental health journey? We’re building a movement of virtual and in-person men’s groups across Ohio — and we’re looking for group leaders who want to make a real difference with us. As a group leader, you’ll create a safe space where men can connect, reflect, and grow together. Training and support are provided — you just need heart, presence, and a willingness to lead. **Apply now to lead a group in your area:** 👉 https://form.jotform.com/taketimespeakyourmind/sym-group-leader-application Speak Your Mind is a mental health non profit dedicated to bringing our community together to end the isolation that leads to mental struggle and suicide. Learn more about them here: https://linktr.ee/taketimespeakyourmind

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.

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is brought to you by the Dianetics and Scientology life improvement center.

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)