Category: Security Insights
The State of Secure Smartphones in 2025
This is the state of secure smartphones in 2025.
eSIM vs Physical SIM: The Privacy Trade-offs Nobody Explains
The SIM card is quietly disappearing. New phones increasingly ship with an eSIM, a SIM built into the device that you activate by software instead of a chip you slot in. Carriers love it, manufacturers love it, and the convenience is real. The privacy story is more mixed than the marketing suggests, and the trade-offs
IMSI Catchers in 2025: What Works and What’s Snake Oil
IMSI catchers are real, they’re used, and the surveillance they enable is not paranoia. That’s exactly why the topic attracts so much junk. Around a genuine threat has grown a market of detector apps and anti-surveillance gadgets that mostly don’t do what they claim. Here’s how to tell the real mitigations from the snake oil.
Why Calls and SMS Aren’t Private: SS7, Explained
Most people assume that a phone call and a text message are reasonably private, protected by the phone company if nothing else. They’re not, and the reason is a piece of plumbing from the 1970s called SS7. Understanding it explains why security professionals treat ordinary calls and texts as open channels, and why your bank’s
Building a Faraday Setup That Actually Works
A Faraday bag is the closest thing to a real off switch for a phone’s radios. Wrap a device in the right material and seal it properly, and nothing gets in or out: no cellular, no Wi-Fi, no Bluetooth, no GPS reception. That’s the appeal. The problem is that a lot of homemade Faraday setups,
Secure Phone Maintenance: What Not to Do
Most advice about a secure phone tells you what to set up. Less of it tells you how to avoid quietly dismantling that setup over the following months. A hardened phone isn’t a one-time achievement, it’s a state you can erode one convenient decision at a time. Here are the habits that undo the protection
Buying a Phone Privately, Legally
There’s a legitimate, legal version of buying a phone with less of a data trail, and there’s an illegal version that involves fraud and fake identities. This is about the first one. You can reduce how much unnecessary personal information gets attached to a new device and its service without breaking any laws, and for
Secure-Phone Marketing Claims, Fact-Checked
The secure-phone market runs on bold claims, and most buyers have no way to test them. The marketing is designed that way. But almost all of the claims fall into a handful of recurring categories, and once you know how each one holds up against technical reality, you can evaluate any product’s pitch in minutes.
Carrier Cooperation: What Your Phone Company Actually Shares
Your phone company knows an extraordinary amount about you, and a lot of people assume it keeps that to itself. It doesn’t, exactly. Carriers operate inside a legal framework that obligates them to retain certain data and to hand it over under the right kind of request, and they’re built from the ground up to
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