Ask HN: How to Harden Your Phone?

6 points | by mandeepj 2 days ago ago

12 comments

  • mikewarot 2 hours ago ago

    If you're really worried, when you sign up for service, create a separate email that you only use for things related to your phone. Don't surf the web on it, or do anything other that making phone calls or sending texts. Don't use it as a general purpose computer.

    Computers at home, behind a router, running something like Cubes to further partition activities are far more secure than something persistently exposed to all the side channel attacks present on a phone.

  • runjake 2 days ago ago

    This guide for iPhone and Android is a good start. Not all their recommendations are obvious.

    https://www.cisa.gov/sites/default/files/2024-12/guidance-mo...

    For a deeper guide, check out the CISecurity benchmarks for your smartphone. They go a bit deeper. But the CISA guide will get you most of the way there.

    https://www.cisecurity.org/cis-benchmarks

  • dabockster 18 hours ago ago

    1. Disable Face ID/fingerprint unlocks and go back to using a alphanumeric pass code (letters and numbers). It's fine once you're actually in the phone, but you absolutely don't want to unlock your phone from the lock screen with biometrics.

    2. Watch what kind of app permissions you grant to what apps. This is way easier to do on iPhones vs Android phones.

    3. Understand that Google Apps (gApps) on Android phones are essentially a rootkit anymore. Especially with that recent news that Google is going to try to end sideloading APKs. Apple isn't that much better but they're more "out of the way" when you try to work.

    4. Apple's SDK for its devices is more private than Android in certain ways. The IceBlock app's explainer is really good about this: https://www.iceblock.app/android

  • k310 2 days ago ago

    How about this idea?

    Since a great deal of mobile usage is at home, how about a firewall of the home network as an 80/20 kind of solution? (YMMV) You might include a VPN.

    This does not help away from home.

    I have asked friends to use Signal for its many features, but I'm in low-tech company lately. They need a kick. Signal might address your messaging needs, and TBH, is better than imessage or FaceTime in mixed company. "Green people". Mainly because it is entirely crosds-platform.

    • mandeepj 2 days ago ago

      Can you please expand on 80/20 rule? 20% of traffic on mobile device or 20% might be suspicious?

      I believe Signal is compromised! There are many such articles online https://www.truesec.com/hub/blog/russian-intelligence-compro...

      • necovek a day ago ago

        They suggest you might be at home 80% of the time, thus firewall on the home network would protect during that time.

        • k310 a day ago ago

          That was my intent. Simply that you might be protected 80% of the time, if you spend 80% of your usage at home, and of course, YMMV.

          But the 80/20 rule as written about is quite different. Simplified, it states that some 20% of effort or cases can give 80% of the results, whereas the other 20% can take 80% of your time/effort to nail.

          Please query Signal about any security concerns. There was a clone of it being used by government officials that had flaws.

  • 2rsf a day ago ago

    Who and what are you trying to protect from? ICE/NSA will hack your phone, and all you can do as an amateur is to make their life harder (and raise their suspicion even more)

  • max_ a day ago ago

    At the bare minimum, ditch the iPhone.

    Get a pixel

    Install grapheneOS

    • mandeepj a day ago ago

      Ordered a Pixel 10 pro XL a couple days ago :-)

      You believe GrapheneOS is more secure than Android?

      • max_ a day ago ago

        Stock Android & iOS are literally spyware.

        GrapheneOS is very private.

  • reify a day ago ago

    I alway found that dipping it in some araldite epoxy resin works great

    Basically, squeeze both tubes, part A and part B, into a bowl, mix well.

    lay your phone on a flat surface and pour the mixed araldite over the phone.

    smooth and level the araldite with a plastic tool.

    let dry.

    sorted!