Phillip Mendonça-Vieira

Perfect and upright, eschews evil.

  1. About
  2. Selected Writing
  3. Selected Work and Projects

1. About

By trade, I tell computers what to do. I make apps, I build products, I throw events. I think about people, urbanism, housing, the internet, and living a good life. I live in Toronto.

You can find me on mastodon, and on instagram. Reach me by email via phillmv at okayfail dot com.

2. Selected Writing

You can find an archive of my writing here. Follow along using the rss feed.

  1. Diphtheria, tetanus, pertussis, polio, and Haemophilus influenza

    October 30, 2021

    The moment had arrived, the needle was ready.

  2. Actually, Rent Control Is Great

    November 13, 2017

    An op-ed summary of my paper on why rent control is good, which was published in the Toronto Star. TL;DR: rent control gives tenants security of tenure — which should be seen as a right of tenants as well as homeowners.

  3. The Saints of Little Portugal

    July 19, 2017

    When you next walk through the residential streets of Toronto's west end, take a look at the houses around you. Before long, you'll see the azulejos.

  4. Canada, Keep the Queen!

    March 18, 2017

    Let's talk about the Queen, shall we? Elizabeth Alexandra Mary has been the Queen of Canada and fourteen other countries since 1952. She is now ninety years old, and she's not getting any younger.

3. Selected Work and Projects

From 2015 to late 2017, I was a cofounder of Appcanary. We tracked security vulnerabilities in open source code and notified our customers when they had to take action.

We got into Y Combinator, we raised money, we built a product, we built a small team, we got customers, we wrote content marketing and published a podcast, we monitored hundreds of servers and thousands of apps. Alas, the market wasn't quite what we thought it was, and we ended up being acquired by GitHub.

It was an interesting time! You can find out more via our company blog.


Established in 2014, with a few co-conspirators, I organize and throw a regularly occurring storytelling night for Toronto tech workers. We produce a podcast, and a whole bunch of people show up. You should check it out.

Until early 2015, I was a cofounder of State Machinery, a security and development consultancy. We opened for business in November, 2012. We performed security audits, penetration tests, built mvps and advised teams on how to improve their software practice.


In February 2013, we built Gemcanary, a tool for monitoring known security disclosures in Rails/Bundler enabled applications on Github. I wrote a little bit more about it on the State Machinery blog. It eventually led to Appcanary.


Back in January 2012, I created an app for an dance party art installation. I combined the instagram api with some javascript and it was a lot of fun.

NYTimes Timelapse

In July 2011, I put together an eight month time lapse of the front page of the I wrote a time lapse tutorial, and I also happened to capture the front page of the bbc. It got a lot of attention, and it was pretty neat.

Undergraduate thesis

In lieu of course work, prior to graduating I wrote an undergraduate thesis on applying a naïve bayesian classifier to rss feeds.