Listening in…
Industries such as energy, manufacturing, and transportation still make extensive use of pager technologies that have been superseded in other sectors of the economy. Researchers at Trend Micro warn that criminals might easily monitor the unencrypted pager data being sent by companies using a only a $20 dongle and some software defined radio know-how, as a blog post by Trend Micro explains.
It doesn't help that the operators are lax in their transmitter filtering so their transmitters spaff their shite over the 144-148MHz band making every nearby 2m amateur radio receiver (except the indestructable Icom IC-22A) squawk in sympathy!