Now that the list of victims of mobile spyware includes household names like Jeff Bezos, many security professionals are well aware that any commercial smartphone can be remotely compromised and essentially turned into a live bug that hears everything the user says and hears. 

Through a malicious code infecting audio-visual conferencing equipment, a group of sophisticated hackers based out of Beijing might be listening in on high-level boardroom meetings, Dell's SecureWorks researchers report.

The popular office phones can be hacked using only a viable Internet connection, found researchers at Columbia University.