Computer Security

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

**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=bN72AZE) 📞 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!

***Tickets must be purchased in advance!*** 🔗: [https://www.eventbrite.ca/e/toronto-hottest-engineering-energy-infrastructure-networking-event-tickets-1986096430889?aff=ebdsoporgprofile](https://www.eventbrite.ca/e/toronto-hottest-engineering-energy-infrastructure-networking-event-tickets-1986096430889?aff=ebdsoporgprofile) Get ready to connect and network with Toronto top engineering, energy, and infrastructure pros at our networking event! \#\# 🌆 Toronto **Energy\, Engineering & Infrastructure Networking Event \| Professionals Mixer** Connect with **Houston’s energy, engineering, and infrastructure professionals** at an exclusive in-person networking event designed to spark meaningful conversations, collaborations, and career-advancing connections. Whether you work in **energy, engineering, infrastructure, construction, transportation, project management, consulting, or industrial services**, this event brings together professionals across Houston’s most influential industries — all in one room. \#\#\# 🤝 **What to Expect** * High-quality networking with **industry professionals & decision-makers** * A relaxed, social atmosphere — no panels, no presentations * Opportunities to build partnerships, grow your network & exchange ideas * A diverse mix of professionals from technical, business & leadership roles This event is perfect for those looking to **expand their professional circle**, explore new opportunities, or simply connect with like-minded professionals in Houston’s thriving energy and infrastructure ecosystem. \#\#\# 👥 **Who Should Attend** * Engineers & Technical Professionals * Energy, Oil & Gas & Renewables Professionals * Infrastructure, Construction & Transportation Experts * Project Managers & Consultants * Business Owners, Founders & Executives * Sales, BD, Marketing & Operations Professionals *(You do NOT need to be an engineer to attend — all professionals in related industries are welcome.)* \#\#\# 🤝 Why Attend ✅ Build valuable partnerships across real estate, design & finance sectors ✅ Connect with potential investors, collaborators & high-value clients ✅ Showcase your business or services to other professionals ✅ Discover new opportunities in Chicago’s booming development market ✅ Enjoy a social, upscale networking environment designed for success \#\#\# 🔗 About Stellar Socials **Stellar Socials by Limitless** hosts professional networking events across North America — connecting thousands of professionals in industries like Real Estate, Tech, Law, Finance, Healthcare, and more. Our events are stylish, energetic, and designed to help you form real, lasting connections. ***Stellar Socials Experience:*** At **Stellar Socials by Limitless**, we specialize in creating exceptional networking experiences that bring together professionals, entrepreneurs, and industry leaders. Our mission is to inspire collaboration, innovation, and growth by facilitating meaningful connections through curated events that resonate with our diverse audience. This relaxed social gathering encourages organic conversations, allowing attendees to connect without pressure. Whether you're attending solo or with friends, come prepared to meet new people and explore exciting opportunities. With a focus on building valuable relationships, you'll leave with new contacts, fresh insights, and potential collaborations. ***Join Our Community:*** * **Instagram**: [@stellarsocialsbylimitless](http://%5Bhttps://www.instagram.com/stellarsocialsbylimitless/%5D(https://www.instagram.com/stellarsocialsbylimitless/) "\[https://www.instagram.com/stellarsocialsbylimitless/\](https://www.instagram.com/stellarsocialsbylimitless/)") * **Facebook**: [Stellar Socials by Limitless](http://%5Bhttps://www.facebook.com/people/Stellar-Socials-By-Limitless/61567104153339/%5D(https://www.facebook.com/people/Stellar-Socials-By-Limitless/61567104153339/) "\[https://www.facebook.com/people/Stellar-Socials-By-Limitless/61567104153339/\](https://www.facebook.com/people/Stellar-Socials-By-Limitless/61567104153339/)") * **TikTok**: [@stellar.socials](http://%5Bhttps://www.tiktok.com/@stellar.socials?_t=8rruhvs9xN2&_r=1%5D(https://www.tiktok.com/@stellar.socials?_t=8rruhvs9xN2&_r=1) "\[https://www.tiktok.com/@stellar.socials?_t=8rruhvs9xN2&_r=1\](https://www.tiktok.com/@stellar.socials?_t=8rruhvs9xN2&_r=1)") **Notice of Photography**: *Please note that photos and videos will be taken during the event for promotional purposes. By attending, you consent to being photographed and/or filmed. If you prefer not to appear in media, kindly notify one of the event organizers.*

**🏀 Drop-In Basketball at the Miles Nadal JCC** Come shoot hoops, stay active, and connect with other players — right in the heart of the Annex! Join us for **friendly, casual basketball** at the Miles Nadal JCC, just steps from Spadina Station. Whether you're looking for a good run, some solid practice, or just a fun way to break a sweat, this drop-in session is for you! *** **🏀 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 through our system. 👉 **[Register here](https://app.amilia.com/store/en/miles-nadal-jcc/api/Activity/Detail?activityId=xRJXn5p)** 📞 **Or register by phone:** 416-924-6211 🔢 **Space is limited** to ensure quality play — once full, no additional participants can be accommodated. *** **🏀 Other Info:** • Basketballs are available for loan at the front desk with a $20 cash deposit and valid ID • All skill levels welcome — come ready to play and have fun • Games are self-organized with regular rotation for equal court time • Friendly, inclusive environment *** Come shoot, pass, dribble, and dunk your way into a great afternoon of basketball. We can’t wait to see you on the court!

Welcome ! OM Chanting is a group practice that has multiple benefits, including calming the mind, feeling relaxed, activating one's self-healing potential. OM Chanting''s powerful vibration contributes to send Peace . A participation of 5$ minimum is strongly encouraged to sustain the rent of the studio . \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- EVENT DETAILS: address: 283 Spadina Avenue; 3rd floor. ( SE corner of Spadina and Dundas). We will start at 6:30 pm. Please plan to arrive 5-10 minutes earlier. We will be sitting on chairs; you can also sit on the floor if you prefer. You are encouraged to bring a bottle of water. Looking forward to seeing you ! For more information about Om Chanting, please visit: [https://bhaktimarga.org/yoga-meditation/](https://bhaktimarga.org/yoga-meditation/) Much Love, Veda Cell: 416-845-9375

Pottery Night at Orkid Gallery! All tools included. No experience needed—just come create, connect & sip tea with us! 3-hour workshop.

We are meeting at the Multifaith Centre every Friday evening from 7 pm to 9 pm in the Third Floor Quiet room, for periods of 8-fold moving exercise, sitting meditation, and walking meditation in the tradition of Chan Buddhism. The session ends with a tea-sharing and discussion. All are welcome and this event is free of charge!

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.

Eventbrite Link: **[https://www.eventbrite.ca/e/694505453507?aff=oddtdtcreator](https://www.eventbrite.ca/e/694505453507?aff=oddtdtcreator)** **Get groovy with Funky Fridays! Toronto's comedy party starts at 8 PM. Unwind, laugh, and kick off your weekend in style!** Dive into the comedic groove every Friday at 8 PM! Experience the funky vibes of Toronto's top comedians at Backroom Comedy Club. Join us for a night of uproarious laughter, good times, and the perfect start to your weekend. Secure your spot for an unforgettable evening filled with funky fun and stand-up brilliance!

🚨👉 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)

**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=kMQ6Bvq)** 📞 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 **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!

[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/

**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.

Come and experience OM Chanting ! Looking for calming your mind and sending the vibration of Peace in the world? OM Chanting enables one to dive deeper into finding Divine love within. This group practice is open to everyone ! Just come on time ( No late arrival permitted). For info: 416 845 9375

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

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!

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

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.

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)

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!