Using disposable phone numbers for better security


A pair of SIM cards.

Last night I received a call from my bank. They'd detected an unusual transaction and wanted to make sure that it was legitimate. Had I recently purchased £10,000 worth of crypto in the Maldives? What?!!? No! ARGH! I started to panic. All my apes money gone! No. Wait. The other thing. I knew it was a scam from the moment "James from your bank's fraud team" started his patter. You see, I have multiple phone numbers. And "James" called me on a number which isn't tied to my bank. So I strung …

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The SIM-less Phone Is Coming. And It Should Scare The Shit Out Of You


Photo of a nano SIM card and its plastic housing.

The argument over the nano-SIM is a distraction. It's a sleight of hand designed to catch the industry off guard and fool it into doing something really stupid. The SIM is designed to do a number of things; encryption, address storage, hold SMS, etc. Most importantly, it's designed to be swappable. With GSM, you can choose your phone and your network provider separately. Want the iPhone? Hate Three's network? Stick in a Tesco Mobile SIM. Love Vodafone? Think their range of phones is crap? …

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