At the DEFCON 19 hacking conferencea full man-in-the-middle (MITM) attack was successfully launched against all 4G and CDMA transmissions in and around the venue at the Rio Hotel in Las Vegas.

This MITM attack allowed hackers to gain permanent kernel-level root access to Android and PC devices using a rootkit in some, and non-persistent user space access in others. In both cases, this attack on CDMA and 4G devices was able to steal data and monitor conversations. For now the only evidence that such an attack occurred is a Full Disclosure mailing list post, but in the next few hours and days, depending on the response from cellular carriers, we should know whether it’s real or not.