ISO/IEC

Power grids run on protocols that were never designed to be secure. Modbus doesn't authenticate. MQTT trusts whoever connects. State estimation believes whatever data you feed it. This month, Parham Mohammadi shows what happens when you exploit all of that. **THE TALK** Parham built a full ICS attack simulation lab and ran real attack chains against it. False data injection into state estimation. Modbus register overwrites. MQTT broker takeover. Chained attacks against distributed energy resources. The operator dashboard stayed green the entire time. If Ukraine 2015 and Industroyer taught us anything, it's that this isn't theoretical. **THE SPEAKER** Parham Mohammadi — Postdoctoral Researcher, York University Parham spent six years at York doing his PhD on power systems simulation. The CPPS-SEC Lab he built for this research simulates real ICS attack chains against power grid infrastructure — the same lab he's demoing at this talk. ***ARRIVAL WINDOW — PLEASE READ*** Doors open at 6:15 PM and close at 6:40 PM. Our volunteer at the gate can only let people up during this window. After 6:40 PM, there will be no one downstairs to let you in. Plan accordingly. If you RSVP and can't make it, please update your status so someone on the waitlist can take your spot. Food and drinks sponsored by Stan. **CONNECT** [Discord](https://discord.com/invite/VDy69zgfc3) [Website]( https://defcontoronto.ca) DC416 is Toronto's DEFCON group. If you're into security, you're welcome here.

*To join this event, you must be able to speak full sentences in Mandarin. This event is for those wanting to practice Mandarin and/or English. Here, you can chat with others and play board games in either language to improve your linguistic skills. Feel free to join our WeChat group during the event, as it is the best way to stay connected with us. If you have any questions, leave a comment on this event page. ＜中文版＞ 此活动是以聊天和玩桌游练习中文或英文，等级不限，平时有6-10位参加者。此活动微信群可在活动中加入，互相学习，天天向上。 如果您有任何疑问，请随时在活动页上留言或联系主持人

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 ClickHouse Enthusiasts! We are excited to be returning to Toronto! You'll have an opportunity to connect with your peers, share industry insights, and learn more about ClickHouse and how folks are using us to solve their big data challenges. **Meetup Details:** * Date: Thursday February 19th, 2025 * Time: 5:30-8pm EST * Location: Spaces Queen West, 180 John Street, Toronto, Ontario, M5T 1X5, Canada The evening will be filled with user presentations, interactive discussions, and the opportunity to network with ClickHouse experts and users. **Agenda:** * 5:30 PM: Arrivals, Check-In and Networking (food and refreshments served) * 6:00 PM Welcome and Introductions * 6:10: Nicolas Joseph - Co Founder, CTO @ FiveOneFour * 6:30: Archie Sarre Wood @ evidence.dev * 6:50: Doneyli Solution Architect @ ClickHouse * 7:00-8:30 PM: Q&A and Networking Space is limited, so register today to confirm your spot! If you’re interested in speaking at a future meetup, please contact zoe.steinkamp@clickhouse.com

みんなさん！トロントにワーホリとか英語を勉強するのがのために来ましたか？このイベントで新しい友だちと会って、楽しましょう！ Let's meet new people and hang out together. We will speak English and Japanese. People who are learning Japanese or are passionate about Japanese culture and traditions are welcome to join. **6pm:** let's meet in the MaRS building food court to practice English and Japanese together 18:00にMaRSビルのフードコートで会いましょう。英語と日本語の練習を一緒にしましょう

Practice English with Boardgame! Big discount $10 -> $5! (Fees help us keep the event running.) Join Japanish for a fun mix of language, board games, and new networking opportunities—all in a friendly, supportive environment! Perfect for anyone eager to practice English and build a new community. ボードゲームで楽しむ英語の練習！ 参加費は割引10ドル -> 5ドルだけ！（イベント運営に使います。） Japanish では、英語をメインにボードゲーム、新しいネットワーキングの機会を楽しみながら、英語を学びたい人を繋げます！新しいコミュニティを作りたい方はぜひご参加ください！ 注) 連絡無しのドタキャンをされた方はブラックリストに載ります。 Note: Those who cancel last-minute without contact will be added to the blacklist.

Python Toronto is back! Join us for our first meetup of 2026 in [The Adaptavist Group](https://www.adaptavist.com/) office at **43 Front St. East** on **Thursday Feb, 19th** at **5:30pm**! If you are interested in giving a talk, we'd love to have you! Please fill out this form - [Submit a Python Toronto talk](https://docs.google.com/forms/d/e/1FAIpQLSfpNKB0Sbs893xp72M4TxmYGrTyLm4Nh1SSXnCqChP9mx6_9A/viewform?usp=header)! Talks are typically short - typically 5 to 10 minutes, and up to 20 minutes if you've really got something say - and on any topic that would be interesting to a room of Python people - this can be a Python library that has helped you, a research paper you've enjoyed, or an interesting application of AI. The Python meetup is a casual, community oriented meetup hosted by companies that use Python in Toronto. Talks are short, informal, and sometimes ad-hoc. Space is limited! Register now to hold your spot! When/Where * **When:** Feb 19th, 5:30pm – 9pm. Doors open at 5:30, talks start around 6. * Come early to enjoy **snacks** and **drinks** provided. * **Address**: [The Adaptavist Group](https://www.adaptavist.com/) \- 43 Front St\. East\, Toronto\, ON\. For more information about our venue sponsor, [The Adaptavist Group](https://www.adaptavist.com/) , please check out their company website - [https://www.theadaptavistgroup.com](https://www.theadaptavistgroup.com) **Code of Conduct** Python Toronto is dedicated to providing a welcoming, harassment-free experience for everyone, regardless of gender, gender identity and expression, age, sexual orientation, disability, physical appearance, body size, race, ethnicity, religion (or lack thereof), or technology choices. We do not tolerate harassment of any form. Sexual language and imagery is not appropriate for this venue, including talks, workshops, parties, Twitter and other online media. Meetup participants violating these rules may be sanctioned or expelled from the meetup (without a refund where applicable) at the discretion of the meetup organizers. Please email elaine@eswong.ca to report any issues.

～English description below～ イベント参加費として、日本人の方(日本で生まれ育ち、現在英語を勉強している方)は$2、日本人以外の方(日本語を勉強している方)は$5頂いております。 皆さんから頂いたお金は、こちらのサイトの維持費や将来のランゲージエクスチェンジ施設利用料やソーシャルイベント等のために使われます。ご理解の程、よろしくお願いいたします。 予約受付開始：土曜日5:00PM(前イベント終了後) 予約取消締切：土曜日14:00PM(当日) 予約受付締切：土曜日15:00PM(当日) スケジュール 5.15 PM - 5:30PM - チェックイン、グループ分け 5:30 PM - 6:15PM - 日本語の時間［または英語の時間］ 6:15PM - 7:00 PM - 英語の時間［または日本語の時間］ 【イベント内容】 Language Exchangeへようこそ！このグループでは、皆さんのレベルに応じて、3〜4名のグループにわかれ、同じ席になった人たちで各45分間、それぞれ英語と日本語でフリートークを行なっていただきます。決まったディスカッショントピックなどはございませんので、気軽に質問をしながらそれぞれのセッションを楽しんでいただければと思います。 開催場所：Atrium フードコート TJEXのサインボードを持ったオーガナイザーにお声がけください。(もしサインがなかったり、わからなければメッセージをお願いします！) 予約規約（⚠️重要） ・当日の不参加、もしくは15分以上の遅刻、また予約取消締切後の変更は原則不参加(No-Show)とみなします。不参加(No-show)が3回になりますと会員登録が抹消され、退会となりますのでご注意ください。 ・イベントに遅れそうな場合は必ずオーガナイザーまでメッセージをお願いします。イベント開始時間にいるメンバーでグループを組み直すこともあるので、連絡なしで到着された場合はイベントに参加できない可能性もあります。原則、30分以上遅れての参加はご遠慮いただいております。あらかじめご了承ください。 キャンセル待ち ・満席の場合、”キャンセル待ち”リスト(waiting-list)にご登録いただくことが可能です。“参加予定”リスト（going-list)中に空席が発生した場合は、”キャンセル待ち”への登録が早かった方を優先に、オーガナイザーが”参加予定”へ移動しますので、当日の参加状況の変更がないかご自身でご確認ください。 ※ご注意※ ・空席ができた際は、自動的に”キャンセル待ち”より”参加予定”へ変更されます。この時にMeetupよりお知らせがあるかはわかりません。 ・システムにより自動的に”参加予定”とされ、それに気づかずに参加しなかった場合でも、不参加とみなされますのでご了承ください。 Instagramアカウント @tjex.ca 最新情報やミートアップの様子を掲載しています。 ぜひこちらもフォローお願いします！ *** ***Although our group is a non-profit organization, we collect $ 5 per English Speaker for every event. All the proceeds are used to run this website and for social events*** RSVP: RSVP open: 5:00 PM (Saturday after previous event) RSVP cancel deadline: Saturday, 2:00 PM (day of the event) RSVP close: Saturday, 3:00 PM (day of the event) Day of Event: 5:15 PM - 5:30 PM - Check-in and Group placement 5:30 PM - 6:15 PM - Japanese conversation 6:15 PM - 7:00 PM - English conversation Event Description: This is an in-person language exchange! Members are placed into groups of three or four based on their language level. Each 45 minute session consists of friendly casual conversation, and/or informal study. Optional Dinner : After the Language event, we usually go for Dinner. Dinner is optional, you may or may not join the Dinner, it depends on you. However, Dinner is only for Participants that joined on the day of the event. Event Location: Atrium Food Court The food court is directly connected to the Dundas subway station. Leave the subway station and walk west along Dundas Street. At the intersection of Bay Street and Dundas Street, you will find an entrance. Proceed down the escalator. The food court is on the basement floor. Please talk to the organizer with the signboard showing TJEX. (If you can’t find them, please send a message to the organizer.) ⚠️RSVP & Late Policy: If you are unable to join on the day of the event, please change your status from 'going-list' to 'not going-list'. Failure to Not show up will result in 1 No -Show. Also, in case of arriving 15 mins late to the event will result in 1 No-Show. Members are removed from the group after 3 No-Shows. Waiting List: Members can join the waiting-list even if an event is full. When a spot becomes available, we will move you to the going-list. Going List: Only Members on the going-list can participate on the day of the event. Group Instagram - @tjex.ca Feel free to follow us!

The Madison Avenue Pub was founded in 1983 and comprises 3 old Victorian Homes in The Annex area of Toronto, right behind the Spadina subway station. There are 6 levels all of which are a little different, like the Piano Bar with a piano player three nights a week. There are 5 levels of patios with lots of seating and a large outdoor bar on the second floor. Food and drink specials daily, something for everyone.

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/Da9fZFxPfs **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.

SPACE IS LIMITED! This is a much smaller class than our 7:30 pm event and we can only accept a limited number of students. Key areas of focus: Practicing oral communication (speaking languages), for conversations, presentations, interviews and job skills Schedule: 1. 6:30- 7:15 pm : 45 -minute language conversation class with certified award-winning language teacher John Dias. 2. Language exchange social (7:30-11 pm): includes Free access to the Toronto's BIGGEST Language Party and Social Party also in the Madison Pub led by teacher John Dias (same location) **Cost: just $ 5 while we have this promo.** **PROMO (Limited Time): $5 fee will give you access to both events (usual rate: $15 total)** Feel free to message us if you have any questions!

한국어는 아래를 참조하세요! A warm welcome to CanAsian Station’s In-Person English x Korean Meetup! A weekly event where we invite you to enjoy sharing language and culture with each other. * Beginners are welcome, what’s important is you’re willing to learn! * Short on ideas? Fear not! We provide new topics each week ,also doubling as study material! Our participation fee is **$5 per event**. All fees are to be E-transferred to canasianstation@gmail.com We also accept payment in cash, but please be advised that E-Transfers are preferred. Looking very forward to meeting and sharing with you all! 😊 Location: Go to the food court downstairs. CanAsian Station의 대면 영어 x 한국어 만남에 오신 것을 환영합니다! 매주 열리는 행사로, 여러분이 서로의 언어와 문화를 나누며 즐길 수 있는 자리를 마련합니다. 초보자도 환영합니다! 중요한 것은 배우고자 하는 마음입니다. 아이디어가 부족하다면 걱정 마세요! 매주 새로운 주제를 제공하며, 그 주제들은 학습 자료로도 활용됩니다! 참가비는 **행사당 5달러**입니다. 모든 요금은 canasianstation@gmail.com으로 E-Transfer를 통해 송금해주세요. 현금 결제도 가능합니다만, E-Transfer를 선호합니다. 여러분과 만나고, 함께 나누게 될 것을 기대하고 환영합니다!😊 장소: 지하에 있는 푸드 코트로 와주시길 바랍니다

トロントで日本語と英語の言語交換会を行います！ 参加費は5ドルです！ 申し込みから2日以内に、 e-Transfer $5 shungo.n0405@gmail.com に送金してください。 e-Transterが使えない場合は、現金での対応も可能ですので、必ずメッセージでお知らせください。 日本語と英語に興味のある人たちを集め、言語交換や新しいコミュニティ作りを行うことを目的としています！英語を学びたい方はぜひご参加ください！ ★こんな方におすすめです！ ・英語を話す練習がしたい方 ・トロントに来たばかりで情報を求めている方 ・友人を作りたい方 イベントの雰囲気は、こちらのInstagramでご確認いただけます https://www.instagram.com/toronto_language?

**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** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

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. (NOTICE - Location change!) This session will be at the Karl Road Branch of the Columbus Library in the Conference Room 2.

**NEW LOCATION: 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). See the handy Parking Map - we recommend street parking. [Street Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) 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 centralohpython@gmail.com

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Please join the Columbus Atlassian Events Team for an evening program where we show you how we are using the Atlassian tools to track, manage and collaborate with others on our hobbies, From Jira & Confluence and Lego, to Tabletop gaming and Trello to miniature painting and Jira. Join the Columbus Atlassian leaders as they walk you through how the Atlassian tools enhance their passion projects.   We'll go over space structures, lessons learned as we built and tracked our project and how it helped us organize group adventures.   Looking forward to sharing our fun with you!Please take note of the New Location and Time of the event. Pay Parking can be found on street, and in locations marked. Agenda --- Speakers Kimberly Deal - Columbus Atlassian User Group Leader Greg Sprowls - Columbus Atlassian Community Leader Kevin Stanley - Columbus Atlassian User Group Leader Moderators Kimberly Deal - Columbus Atlassian User Group Leader Greg Sprowls - Columbus Atlassian Community Leader Kevin Stanley - Columbus Atlassian User Group Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-for-the-love-of-atlassian-using-atlassian-to-manage-your-passion-projects/.

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