Which of the following is generally practiced by the police or any other recognized governmental authority?

Spoofing is a malicious attack technique where an attacker impersonates a trusted identity or IP address, and is not a recognized or lawful government practice.

Wiretapping refers to the covert monitoring or recording of wire and electronic communications, and is a lawful investigative technique used by police and recognized government authorities under court-issued authorization. It is governed by statutes such as the Electronic Communications Privacy Act in the US, which legally distinguishes government wiretapping from unauthorized interception.

Phishing is a social engineering attack used by malicious actors to deceive users into revealing credentials or sensitive data, not a law enforcement technique.

SMB signing is a security feature that authenticates SMB network packets to prevent man-in-the-middle attacks, and is not related to communications surveillance or interception.