LAS VEGAS--A researcher released software at the Black Hat conference on Thursday designed to let people test whether their calls on mobile phones can be eavesdropped on.
The public availability of the software, dubbed Airprobe, means that anyone with the right hardware can snoop on other peoples' calls, unless the target telecommunications provider has deployed a patch that was standardized about two years ago by the GSMA, the trade association representing GSM (Global System for Mobile Communications) providers, including AT&T and T-Mobile in the United States.
Most telecommunications providers have not patched their systems, cryptography expert Karsten Nohl said.
For more on this story, read Can your calls be intercepted? This tool can tell on CNET News.