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    Pb

    peabee.substack.com · Personal blog · on HN since 2022

    Pb writes investigative data posts about the Indian internet, app tracking, QR code menus, and the data sellers who operate there.

    Visit blogHN submissions
    Privacy & PolicyMobile & AppleData & Visualization
    What HN says

    HN links his post on apps reading your installed app list on Android as evidence of a privacy gap; commenters find the analysis interesting.

    Stats for nerds
    19HN people shared it
    14linked in comments
    2.9Kstory points
    Feb 2026last shared
    2022people per year2026

    Top posts on HN

    1. 1
      Everyone knows all the apps on your phone
      10 people · 1.2K points · first shared 2025 · 482 comments on HN
    2. 2
      One kitchen, hundreds of internet restaurants
      1 person · 685 points · first shared 2022 · 355 comments on HN
    3. 3
      Fake IMDB credits
      1 person · 552 points · first shared 2022 · 240 comments on HN
    4. 4
      What's inside the QR code menu at this cafe?
      2 people · 471 points · first shared 2024 · 317 comments on HN
    5. 5
      Mafatlal and the Early Indian Internet
      3 people · 3 points · first shared 2022 · Discussion on HN
    6. 6
      The little Indian internet corner of database sellers
      1 person · 3 points · first shared 2023 · Discussion on HN
    7. 7
      Not Young People Anymore
      1 person · 3 points · first shared 2022 · Discussion on HN
    8. 8
      #13: GoogleWhacking
      1 person · 2 points · first shared 2022 · Discussion on HN
    9. 9
      This is a clone of Nykaa's website
      1 person · 1 points · first shared 2023 · Discussion on HN
    10. 10
      Comment 8238009
      1 person · first shared 2022

    What HN people wrote when they linked it

    • avg_devAug 2022

      Agreed. I thought the article was really interesting. I don’t know much about how the author got their data, it seems like it’s a Kaggle dataset and I’m not familiar with how that was procured, but the analysis was really fascinating to me. So was the tweet by the person who asked Zomato about the repeated separate instances using the same FSSAI license, which I looked up and here is the link: https://mobile.twitter.com/ManjoBun/status/1533113310106660865 : definitely no public follow up by Zomato.

      The line chart was great as well showing the huge number of listings for that one kitchen.

      I don’t live in India and I wondered what FSSAI is, so I looked that up as well. It’s the Food Safety and Standards Authority of India: https://www.fssai.gov.in/

      The author is performing a public service that I feel ought to be done by the authority in question in the first place. I hope the article gets lots of traction and serves as an example for food safety authorities worldwide to prevent this kind of trickery.

      I’m leaning towards subscribing to the author’s newsletter; at the end of the article they mention that they were the ones who posted that recent fake IMDB credit article which I also saw on HN, and I’m looking forward to reading the article on the early Indian internet (https://peabee.substack.com/p/15-mafatlal-and-the-early-indian). (I once had a chance to see Vint Cerf give a talk and while it was a while ago I remember enjoying it.)

      Last note: I thought it was kind of…

    • captn3m0Jun 2025

      Another similar tracking vector that lets any app detect all installed apps by using android.intent.action.MAIN Query: https://support.google.com/googleplay/android-developer/thread/332857106/privacy-concern-about-android-intent-action-main-intent-in-queries-element without the QUERY_ALL_PACKAGES permission.

      No response from Google. Being used by dozens of apps in the wild.

      Edit: Original Research link: https://peabee.substack.com/p/everyone-knows-what-apps-you-use (HN: https://news.ycombinator.com/item?id=43518866 , 482 comments)

    • Zenbit_UXSep 2025

      I don’t often log in to HN to comment, but when I do it’s usually when I see this type of comment.

      You can always spot them by the first word being “No” or “False” followed by a confidently asserted yet hilariously incorrect statement.

      I suggest reading this [0] and approaching these discussions with more humility in the future. As you yourself stated, you’re an SRE, not a security expert, yet this forum is full of them.

      0: https://peabee.substack.com/p/everyone-knows-what-apps-you-use

    • deauxFeb 2026

      https://peabee.substack.com/p/everyone-knows-what-apps-you-use

      This has been going on for years, Google knows about it, and intentionally leaves it unfixed.

      > Out of 47 Indian apps I randomly analyzed, 31 of them used the "ACTION_MAIN" filter - giving them access to see all the apps on your phone without any disclosure. That's 2 out of 3 apps.

      Of course there's hundreds of other variants of malware, this is just one of the most prevalent.

    • wolvoleoJan 2026

      Google certainly hasn't done a great job on privacy. Android devices leak so much information.

      https://arstechnica.com/information-technology/2024/10/phone-tracking-tool-lets-government-agencies-follow-your-every-move/

      https://peabee.substack.com/p/everyone-knows-what-apps-you-use

      About Apple I just don't know enough because I haven't seriously used them for years

    • ninjuAug 2022

      The comments at the end of the article are funny

      https://peabee.substack.com/p/16-the-case-of-fake-imdb-credits/comment/8238009

      (apparently commenting has been turned off :-))

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