US carriers close security loophole that allowed easy SMS hijack - Android

• Update
  AT&T, T-Mobile, and Verizon close security holes

Your phone and its associated number are always with you, and only you, so it makes sense that a text message sent to you is a solid secondary method for authenticating a login. But savvy tech users know this method of verification is rife for exploitation: SIM jacking, SS7 attacks, and other hacking methods are now common. A recent investigation showed that it's possible to perform similar attacks with readily-available marketing tools, with the victim none the wiser.

US carriers close security loophole that allowed easy SMS hijack was written by the awesome team at Android Police.