Be wary of your iphone because the shutdown may also be monitored

[Abstract] shutdown is just a "suspended animation" state, and the phone can still receive instructions, even the activation of the microphone instructions.

Snowden, the "Prism gate", says the NSA can still monitor users through microphones in the case of a hand-machine. This argument is also confirmed by experts.

Experts have now confirmed that the National Security Agency (NSA), technically, is likely to still monitor its microphone while the iphone is closed.

It was in Wednesday, Snowden Edward Snowden, in an interview with the NBC Night News host Brian Williams, when he was interviewed. Today, experts have confirmed that the technology is likely to be implemented.

　　Williams in an interview in Wednesday, he held his iphone in the air, and he asked Snowden: "If the NSA wants to monitor my life, how would they listen to my phone?" If they were shut down, would they still be able to open it remotely? Can they open its application remotely? "

"Of course they can start it remotely. ' said Snowden.

Security researchers claim the technology is possible. Some software allows the phone to go into low-power mode, making it look like it's turned off, but its main communication chip is still running.

This "fake shutdown" mode allows the handset to receive instructions, including activating its microphone, said Eric McDonald, a hardware engineer in Los Angeles, to Wired magazine.

"The phone screen looks black, and if you press its button, it doesn't respond." "But in reality, the baseband is still open, or it will open periodically," he said. It's hard to know if the software is installed on your phone. ”

Robert David Graham, a security advisor, says the technology is called "software implantation."

"Software implantation is the practice of the NSA intercepting your phone and installing hardware or software in it." "In general, the NSA intercepts mobile phones on delivery, or sneaks into your hotel room to steal your phone, or remotely implant hacking software on your phone via the Internet or baseband," he wrote. ”

"Software implants can give the NSA full control over your phone, but it's not easy for them to implant software into your phone," he said. Once the NSA is implanted with the software, they can start your phone remotely--your phone doesn't really shut down, but you don't realize it. ”

Graham claims that the NSA is monitoring your phone on the premise that the agents have moved your cell phone. "My point is simple, the NSA is not omnipotent, and they can't do anything," he said. They can do a lot of things, and they are good at these things, but they are not God, it is impossible to change magic. ”

Experts say that to ensure that the phone is completely unable to operate, it must be allowed to enter the so-called DFU mode. To enter DFU mode, first insert the iphone into the power jack or USB connector, and then hold down the shutdown key for three seconds before holding down the home key, and then holding down the two keys for 10 seconds.

Continue to hold down the home key for 10-15 seconds while releasing the Power key. After these operations, the mobile phone will enter the DFU mode.