The Citizen Lab says 25 countries are likely using spyware sold by a company called Circles that can snoop on mobile phone calls and text messages. Circles’ spyware operates by exploiting a common signal flaw in the global mobile phone system to enable call and text snooping as well as tracking of phones. The company’s spyware and technology are likely being used by 25 countries around the world for cyberespionage, the research organization says. It could also be used to intercept codes used for two-factor authentication sent via SMS.”]
Source: https://www.bankinfosecurity.com/researchers-25-countries-use-circles-spyware-a-15512