It took a long time, but the humble SIM card that sits within your phone, and seven billion others, has finally been hacked. Of the seven billion modern SIM cards in circulation, hundreds of millions are estimated to be susceptible. The hacks allow a would-be attacker to infect your SIM with a virus that sends premium text messages, or records your phone calls -- and, in some cases, access the secure, sandboxed details stored on your SIM by mobile payment apps, giving a hacker access to your bank and credit card details. Now that a proof of concept has been demonstrated, we wouldn't be surprised if billions of other SIM cards are also vulnerable to other attack vectors.