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The protester's guide to smartphone security

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201–210 of 246 posts

Re: The protester's guide to smartphone security

#201

Earlier quoted context omitted.

Burner phones aren't safe. Security through obscurity worked with the 1990s cell network but not with today's vast logging/geolocation tagging.

Can you still buy phones with sim cards that don't require ID to get working? Not in Europe, UAE or Australia.

Some countries still allow that: https://www.comparitech.com/blog/vpn-privacy/sim-card-regist...

Re: The protester's guide to smartphone security

#202
post #178
post #3

If you're attending a large-scale protest, it's likely that the cell-towers (or stingrays) won't be able to handle everyone who is connected anyways, so worth planning to use apps that can chat over P2P WiFi or Bluetooth together with the rest of your friends. This also allows you to continue using Airplane Mode the entire time, while being able to communicate with people nearby. Alternatively, investing in walkie-ta…

Absolutely best idea is to make an encrypted PDA & play forensic scientist by recording everything. 1. Get a Google Pixel 9, 9 Pro, or 9 Pro XL smartphone (Cellebrite-proofn at time of writing). 2. Verify images & GOS. 3. Disable biometrics & wireless connections. 4. Memorize with Anki or your own head a new, NIST-compliant passphrase with ≥ 8+ words. 3. Get a cover for the smartphone. 4. Buy EMI tape and electricall…

If you‘re opening the cover, disconnecting antennas might be the way to go instead. Depending on the device, it‘s relatively painless and even reversible.

Re: The protester's guide to smartphone security

#203
post #178

Earlier quoted context omitted.

Absolutely best idea is to make an encrypted PDA & play forensic scientist by recording everything. 1. Get a Google Pixel 9, 9 Pro, or 9 Pro XL smartphone (Cellebrite-proofn at time of writing). 2. Verify images & GOS. 3. Disable biometrics & wireless connections. 4. Memorize with Anki or your own head a new, NIST-compliant passphrase with ≥ 8+ words. 3. Get a cover for the smartphone. 4. Buy EMI tape and electricall…

If you‘re opening the cover, disconnecting antennas might be the way to go instead. Depending on the device, it‘s relatively painless and even reversible.

Or, use a Faraday cage?

Re: The protester's guide to smartphone security

#204
post #174

There are some apps that detect fake base stations monitoring your traffic There are apps that uses accelerometer and gyroscopic sensors to detect if phone is snatched execute certain action based on this Use app lock, so in case your phone is opened, apps will still be locked --> lock galley + filesExplorer(any) + settings + playstore + Browser(All installed) + Cloud/RemoteDrives(any) + Any syncing apps + Contacts +…

> There are some apps that detect fake base stations monitoring your traffic

Pixels (and soon other Android devices) have this functionality built-in: https://security.googleblog.com/2024/10/pixel-proactive-secu...

Re: The protester's guide to smartphone security

#206
post #188

Earlier quoted context omitted.

How is it more secure than not having a phone?

By capturing evidence of what happens to you that cannot be tampered with.

But that’s not security, it’s usability. Just by virtue of taking your phone to a less safe place you’re lowering its security. Taking a small offline camera would be a lot more secure if your concern is recording the events.

Re: The protester's guide to smartphone security

#207
post #205

Or simply leave your phone at home. Need to meet with friends? Plan a meeting point. Need to take photos? Do you really? What right have you got to photo other people's faces? Just leave your damn phone at home.

If you want to take photos, bring a good quality video camera, preferably with optical image stabilization. It’s much harder for disinformationists to deny or reframe a long, uncut video.

Re: The protester's guide to smartphone security

#208
post #188

Earlier quoted context omitted.

How is it more secure than not having a phone?

By capturing evidence of what happens to you that cannot be tampered with.

Any honest threat model assumes that any internet-connected device is already compromised…

Re: The protester's guide to smartphone security

#209
post #2

> Some law enforcement agencies use "stingrays," devices which can impersonate a cell tower to track visitors to an area. While the capabilities of the most modern ones isn't fully known, you should definitely protect yourself from the subset of stingrays which abuse the lower security standards of older, 2G networks. Good tip! I didn't know about disabling 2G support on my phone.

I just checked my Samsung S21 and there's no option to disable 2G. I can choose 3G only, or if I want to use 4G/5G I need to enable 2G as well.

Re: The protester's guide to smartphone security

#210
post #205

Or simply leave your phone at home. Need to meet with friends? Plan a meeting point. Need to take photos? Do you really? What right have you got to photo other people's faces? Just leave your damn phone at home.

Taking video can protect against police brutality or false claims by the police. Although I agree that it also is dangerous.
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