Machine Learning

**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).

Join us this week as a guest to overcome your fear of public speaking and speak with confidence! We hold weekly meetings on Thursday nights to facilitate impromptu speaking, debates, discussions, and prepared speeches to practice our skills and give each other constructive feedback. We are a friendly group of all ages and backgrounds in the GTA, where we help our members and guests in their personal and professional development. We typically meet at the Etobicoke Civic Centre with lots of free visitor parking. You can join us as a guest anytime you want, for as long as you would like, to see what Toastmasters is all about! Come and join us this Thursday to become the best version of you. The theme for this week's meeting is TBD! Join us to practice your improv. speaking skills, debating skills, and to improve your public speaking abilities. If you're interested in attending this meeting, please contact us through our "Contact Us" form on http://goodyeartoastmasters.com/ See you there! ABOUT GOODYEAR TOASTMASTERS \*NOTE\* We are now back in-person at the Etobicoke Civic Centre! Visitor Parking is free. Simply let the Security Person know you're here for a Toastmasters meeting. • Our meetings start at 6:45 PM and lasts for about 2-hours. We suggest you arrive earlier to settle in and network before we begin. • It's free to attend as a guest and you can join us as many times as you would like. For the full access to the Toastmasters Pathways Programme, however, you will need to join as a member and pay a membership fee. • Don't worry about the low attendance numbers on Meetup. Members do not RSVP here. We use the club website instead. Meetup is primarily a place for us to reach out to newcomers such as yourself!

**Note the location Thai Express Union Station food court.** **Google pin.** [https://share.google/grUYGncv3G3exetw7](https://share.google/grUYGncv3G3exetw7) **We will discuss day trading, swing trading strategies and tools.** This will not be a presentation format. **Telegram group for quicker communication:** [https://t.me/+m8BMRABGX74xNmZh](https://t.me/+m8BMRABGX74xNmZh) **Discord Group for exchanging ideas, charts and strategies** [https://discord.gg/SVYTSPh7](https://discord.gg/SVYTSPh7) We will discuss options trading and investing strategies, as well as the skills needed to start. It is a **casual meetup to meet people who are interested in trading or building a career around it, especially algorithmically. No "financial gurus" are welcome.** Join us for a meetup where we share trading ideas, and connect with others who share a common interest in investing. Algorithmic trading is commonly used by large institutional investors and market makers, but it is also accessible to retail traders. It offers several advantages over manual or discretionary approaches—particularly in minimizing psychological errors that often impact human traders. Some of the topics we usually discuss: \- Reasons for investing \- Limitations of being a retail trader \- Practical tools: brokers\, APIs\, data sources\, real\-time implementation \- Brainstorming ideas: strategies that may be working today **Note this even is not sponsored or endorsed by any business where we are meeting. We are just using their space for casual meetup event.** **Please no promotion of MLM, pyramid schemes, self promotion to paid services, affiliate promotion, paid subscriptions or similar stuff.** **Useful Links** * Notion page of [Algo Trading Resources](https://systemetic.notion.site/Algorithmic-Trading-Resources-fe400c5258e440fd8a4d63770d08bc13) **Disclaimer:** This meetup is for educational and informational purposes only and should not be construed as professional financial advice. The discussions and materials presented at this meetup are provided as general information and are not intended to be a substitute for professional financial, legal, or tax advice. All participants are encouraged to consult their financial advisor or qualified professionals regarding specific financial issues. None of the organizers, speakers, or participants at this meetup are liable for any financial loss or damage incurred as a result of trading activities or decisions based on the information shared during this event. Trading stocks and other financial instruments involves risk and may not be suitable for all individuals. **CFTC Rule 4.41:** Futures, foreign currency and options trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing one’s financial security or lifestyle. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results. **Non-Endorsement**: References to specific securities, investment strategies, or any financial instruments during the meetup are for illustrative purposes only and do not constitute a recommendation, endorsement, or investment advice by the organizers or speakers. **No Guarantees**: There is no guarantee that the investment strategies discussed will be profitable or protect against loss. All investments involve the risk of loss. **Conflict of Interest**: Presenters or organizers may hold or intend to acquire positions in securities discussed during the meetup, which may create a conflict of interest.

\*\*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. **Sponsors:** -Microsoft -Lantern ​**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

**First Meetup: Trix & Tarneeb Night** Come join us for a relaxed evening of cards, good company, and great beverages! Whether you're a seasoned Trix player, a Tarneeb devotee, or just curious about these beloved card games, you're welcome at the table. We'll be gathering at a local café to shuffle up, deal out, and enjoy some friendly competition over coffee and bites. This is all about having fun and connecting with fellow card game enthusiasts — no pressure, no scorekeeping, just good vibes. Come with friends or come solo – you'll be put together in groups of 4! Bring yourself, bring a friend, and get ready to play! **What to expect:** * Casual games of Trix and Tarneeb throughout the evening * A welcoming crowd of all skill levels * Great café atmosphere with food and drinks on hand * A chance to meet people who share your love of cards New to the games? No worries — experienced players will be happy to walk you through the rules. 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.*

Join us for an evening of French conversation at B Espresso Bar in the atrium of the Toronto Royal Conservatory of Music (near St. George station)!
We welcome all levels of French, and it's free\*.
Venez pratiquer votre français! \*While there is no fee to attend this event, guests are expected to purchase something from B Espresso Bar, in accordance with RCM's restrictions on usage of the cafe atrium space. **Building location:** The Royal Conservatory is at 273 Bloor St W, between Varsity Stadium and the Royal Ontario Museum (ROM). There are entrances off Bloor St. and Philosopher's Walk. If you enter from Bloor St through the large glass doors, follow the hallway on the left beside the staircase and turn left at the end. (Closest TTC: St. George) **Notes and restrictions:** The host may or may not attend this event. Attendees are encouraged to seat themselves at two or more adjacent tables, as needed. Please form groups of 6 people at each table; do not rearrange chairs and tables to accommodate more people, as this obstructs the narrow walking space. Guests are expected to order something from the cafe, and are asked to please refrain from bringing outside food or drink. Attendees must leave the building at 8pm when the cafe stops serving. **Contributions:** If you are a regular with us and would like to support the group, please send any contributions by e-transfer to [diskutomeetup@gmail.com.](http://diskutomeetup@gmail.com.) The yearly donation goal and amounts received year-to-date will be tracked anonymously on [this google sheet](https://docs.google.com/spreadsheets/d/18GfqYsis8Cf2XGg4KsKQJsY_0Fv3bsSQHwJAxvC1Km8/edit?usp=sharing). Thank you so much for your support.

Hello everyone! Nice to meet you 😊 This is the first event I’m hosting on Meetup.com, but we’ve already had four small coffee chats, so this will be our fifth meetup for Korean learners. This time, I’m trying something a little different, a combination of a study group and a dinner gathering. For this event, first-time attendees will be joining the dinner table, and as you become a regular, you’ll also be able to join the study group sessions. The location is still TBD and will be announced soon. **It’s free to join, but everyone will pay for their own food or drinks.** *** **\*\* What is “식구 (食口)”?** “식구 (Sigoo)” means “family” in Korean. It literally comes from Chinese characters meaning “people who share meals together.” You can see how important sharing a meal is in Korean culture. So this time, why don’t we sit at the same table, share a meal, and get to know each other through Korean learning?

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 your community of fellow Intuitives and MBTI nerds for a casual evening of engaging conversation. We get together every second Sunday – with a mix of regulars and new friends. There is no fee to attend, though we ask that you support the venue by ordering something to eat or drink. **Feel free to contact event host B. via Facebook/Meetup messenger, or text/call 416-712-8635 for directions**. About the venue: The Pint Public House Nearest Subway: Union Station Map / Directions: https://maps.app.goo.gl/G5GfXDSQXeifJ5ot5 We make an effort to find pubs that are quiet and introvert friendly, with a section to ourselves. We make no effort to muffle our extroverts, but should they get out of hand, our resident INTJ will use their death stare, to pull them back in line.

[Summary] This meetup is for those who are interested in code, web development, design, cloud, or AI. All levels are welcome, so feel free to bring your laptop and discuss what you are working on or what you are learning. You can share your projects and ideas with other participants freely. There are outlets and WiFi, drinks are about $5 for tea, they take card only. [Price] Attendance is FREE. But you need to buy something from the venue. [Policies] \- We do not tolerate harassment of our members \- We remind users that that this meetup is intended for networking and hobby development\, and any attempts at using this meetup event as a dating platform will not be not be tolerated Further information: https://torontostack.exchange/

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

**NOTE the location we are meeting is at** **Fairview mall food court - We will be seated near PICO pizza** Join us for a relaxed evening where traders of all levels come together to meet new people, share market ideas, and talk about the week’s trends and themes. Whether you’re curious about the overall market condition, looking for fresh setups, or just starting out with trading, this meetup is the perfect place to ask questions, learn from others, and build your network. We’ll open the floor for casual discussions on current market conditions, sector rotation, trade setups, and risk‑management practices, while also giving newcomers a simple, jargon‑light way to understand how to get started in trading. Bring your charts, your ideas, and your questions—no sales pitches, no gurus, just honest conversation among people who love trading and learning from each other. **Telegram group for quicker communication:** [https://t.me/+m8BMRABGX74xNmZh](https://t.me/+m8BMRABGX74xNmZh) **Discord Group for exchanging ideas, charts and strategies** (Link is in the Telegram group pinned post) NOTE: Not financial advice. This event is for educational and informational purposes only.

🚨👉 To RSVP for this event, head to our [Luma event page](https://luma.com/cye39lls). RSVPs are intentionally closed on Meetup.👈🚨 https://luma.com/cye39lls Join us for a welcoming and inclusive coffee meetup where women and non-binary folks in tech can connect, share experiences, and build community in a relaxed setting. **April Topic:** When the Ground Shifts - Navigating Change in Work and Life Whether you're an industry veteran or just getting started, everyone is welcome! **FREE ENTRY** – However, please support the café by purchasing a drink or snack while attending. **Location:** Prema Coffee and Bar, 35 McCaul St #110, Toronto, ON M5T 1V7 **Time:** 11:00 AM – 1:00 PM **Schedule:** 11:00 AM – 11:30 AM → Arrive, grab a drink/snack, socialize 11:30 AM – 1:00 PM → Group discussion, paired chats & activities **Important Notes for RSVPs** We’re introducing a few questions when you RSVP to help us manage space and ensure an inclusive environment: **This is a space created to support people who are underrepresented in tech.** We ask **cisgender men** (men who were assigned male at birth and identify as male) to respect this and not attend. **To manage limited space, we track no-shows for all Code Diversity events.** If you RSVP and miss two events, you’ll be waitlisted for future events. Please update your RSVP at least 24 hours in advance if you can’t attend. **Photography & Video Disclaimer:** By attending this event, you acknowledge and agree that photographs and/or video recordings may be taken. These may be used for promotional purposes, including social media, websites, and other marketing materials. If you do not wish to be photographed or recorded, please inform the event organizer upon arrival. **Organized by TechTank** Let’s continue fostering diversity, inclusion, and innovation in tech—this month and beyond! **Join our vibrant community for the latest updates and continued discussions:** [https://linktr.ee/techtankto](https://linktr.ee/techtankto)

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)

**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

If you enjoy knitting, crocheting, working with yarn, this is the group for you. Meet new friends, bring your projects, learn from others.
We normally meet a few times a month during the week from 6-8pm. We will occasionally meet on weekends during daytime hours.

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.

**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