Gyoumagazine
Can Messenger calls be tapped by police?
Yes, but there are usually rules for tapping a phone line, such as restrictions on time so that law enforcement can't listen indefinitely. The police are also supposed to limit wiretapping to telephone conversations that will probably result in evidence for their case.
Can police tap Facebook calls?
A federal judge in Fresno, California recently denied prosecutors' request to force Facebook to wiretap voice calls by suspected gang members conducted over Messenger. ... According to Reuters, Facebook has the capability to wiretap Messenger calls "with some effort," but it's unable to do so for WhatsApp calls.
