GSMK CryptoPhone Firewall

Kim Zetter, Wired:

GSMK’s CryptoPhone 500, a high-end phone that costs more than $3,000 and combines a Samsung Galaxy S3 handset with the CryptoPhone operating system, offers strong end-to-end encryption along with a specially hardened Android operating system that offers more security than other Android phones and the patented baseband firewall that can alert customers when a rogue tower has connected to their phone or turned off the mobile network’s standard encryption.

CryptoPhone users have reported 19 rogue towers spread throughout the U.S. Protection against rogue cell towers should be standard on all devices that depend on cellular connectivity for normal operations.