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sizeof.cat

Personal blog · sizeof.catsecurityprogramming

sizeof.cat is a personal blog at sizeof.cat about security and programming. Since 2017, 36 different Hacker News readers have linked it 42 times, most often “Web Browser telemetry – 2025 edition”. No feed was found, so read it on the site itself.

No feed foundVisit the blog
42mentions?
36HN people?
2017–2025first – last linked?
Links on Hacker News per year · peak 14 in 2021

Most-linked posts?

  1. Web Browser telemetry – 2025 edition
    8 people · 9 mentions · first linked 2025-04-17
  2. Twitch Leaks “An Extremely Poggers Leak”
    6 people · 7 mentions · first linked 2021-10-06
  3. Web Browser Telemetry
    2 people · 2 mentions · first linked 2021-12-26
  4. /post/twitch-leaks/
    2 people · 2 mentions · first linked 2021-10-07

What Hacker News says?

  1. Twitch, it seems https://sizeof.cat/post/twitch-leaks/#secrets-exposed

    Comment linking /post/twitch-leaks/

    on “Twitch source code and customer data has reportedly been leaked”
  2. Submitted Windows Telemetry as a story · 12 points

    HN discussion
  3. Hardcoded database creds in code. Saw a post earlier with credentials to an rds instance. It said there were more examples. EDIT Found it again: https://sizeof.cat/post/twitch-leaks/#secrets-exposed

    Comment linking /post/twitch-leaks/

    on “Twitch source code and customer data has reportedly been leaked”
  4. Submitted Web Browser telemetry – 2025 edition as a story · 11 points

    HN discussion
  5. Here's another link https://sizeof.cat/post/twitch-leaks/ Looks real to me based on the archive I managed to download so far

    Comment linking /post/twitch-leaks/

    on “Twitch source code and customer data has reportedly been leaked”
  6. Submitted Twitch Leaks “An Extremely Poggers Leak” as a story · 8 points

    HN discussion
  7. Torrent (allegedly) here: https://sizeof.cat/post/okta-customers-leak/

    Comment linking /post/okta-customers-leak/

    on “Hackers claim to have breached Okta systems”
  8. Submitted Web Browser telemetry – 2025 edition as a story · 5 points

    HN discussion
  9. What was your methodology in checking? I got different results using a local mitmproxy on a clean install. https://sizeof.cat/post/web-browser-telemetry-2025-edition/

    Comment linking /post/web-browser-telemetry-2025-edition/

    on “Firefox will have an option to disable all AI features”
  10. Submitted Web Browser telemetry – 2025 edition as a story · 4 points

    HN discussion
  11. I think it's a good idea to mitm yourself and look at what exactly your browser is up to. We should be careful about just accepting and repeating hearsay when such claims are pretty easy to verify yourself. https://sizeof.cat/post/web-browser-telemetry-2025-edition/ As for webapps breaking in Librewolf, IME those can be fixed by selectively unblocking canvas (or whatever) for the site in question.

    Comment linking /post/web-browser-telemetry-2025-edition/

    on “Firefox will have an option to disable all AI features”
  12. Submitted Web Browser telemetry – 2025 edition as a story · 4 points

    HN discussion
  13. https://sizeof.cat/post/twitch-leaks/

    Comment linking /post/twitch-leaks/

    on “The naughty username checking system used by Twitch”
  14. Submitted Web Browser telemetry – 2025 edition as a story · 3 points

    HN discussion
  15. https://sizeof.cat/post/twitch-leaks/

    Comment linking /post/twitch-leaks/

    on “The naughty username checking system used by Twitch”
  16. Submitted Download macOS 11 Big Sur Developer Beta as a story · 3 points

    HN discussion
  17. Here are a few screenshots of go and php: https://sizeof.cat/post/twitch-leaks/ . WARNING: do not click the link, copy it and paste it in new tab.

    Comment linking /post/twitch-leaks/

    on “Twitch is hacked, and its source code leaked”
  18. Submitted Web Browser telemetry – 2025 edition as a story · 2 points

    HN discussion
  19. Check out https://communitywiki.org/trunk/ and https://sizeof.cat/post/mastodon-accounts/ .

    Comment linking /post/mastodon-accounts/

    on “Mastodon: AGPLv3 FOSS social network server”
  20. Submitted Web Browser Telemetry as a story · 2 points

    HN discussion
  21. I use these on Mac https://sizeof.cat/project/ladybird-builds/

    Comment linking /project/ladybird-builds/

    on “This Month in Ladybird – October 2025”
  22. Submitted Web Browser Telemetry as a story · 2 points

    HN discussion
  23. I've been trying All The Browsers lately and Arc is definitely still my favourite; I actually had no idea that development had stopped on it, that's a shame. Zen looks good, but they are off the charts on this graph! https://sizeof.cat/post/web-browser-telemetry-2025-edition/ What is going on there? Their Privacy Policy says no telemetry, but then they have a section on those connections made at startup which appare…

    Comment linking /post/web-browser-telemetry-2025-edition/

    on “Why I'm all-in on Zen Browser”
  24. Submitted Web Browser Telemetry as a story · 2 points

    HN discussion
  25. You know, it's pretty eye opening, to see that many streamers make millions in just a few months, while it would take me more than 50 years of constant work in my country to make a single million. Though looking at the top earners is probably very demoralizing if you don't also see the median and average figures, which i'm curious to see. Someone actually did a writeup of some of their personal findings, though i'm…

    Comment linking /post/twitch-leaks/

    on “Twitch Hack of 135 GB of Data Includes How Much Its Biggest Streamers Make”
  26. Submitted Coa NPM package got some malicious code in a new version – sizeof(cat) as a story · 2 points

    HN discussion
  27. You could add a list of all Facebook-owned IPs to your host file and resolve them to localhost. You can get that list here: https://sizeof.cat/post/compile-a-list-of-all-facebook-owned...

    Comment linking /post/compile-a-list-of-all-facebook-owned-ips/

    on “Ask HN: How to leave Facebook as a non-user?”
  28. Submitted My Apple iBook G4 hardware upgrades as a story · 1 points

    HN discussion
  29. I don't really get the image it redirects to, but the website does have information on leaks. https://sizeof.cat/post/twitch-leaks/

    Comment linking /post/twitch-leaks/

    on “Twitch Leaks “An Extremely Poggers Leak””
  30. Submitted Block ChatGPT from scraping your website as a story · 1 points

    HN discussion

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