TC LI develops standards supporting international requirements for law enforcement agencies to intercept and retain electronic communication data sent over public communication services. It is responsible for the control and handover interface and the rules of delivery of technology-specific interception or retained data. Lawful interception is a security process in which a service provider or network operator is legally obligated to collect and provide law enforcement with intercepted communications of private individuals or organisations. However, technical features that enable lawful interception within mobile telecommunications can be abused by state actors or exploited by malicious actors.

• Published technical specification: TS 103 707 sets out the rules for law enforcement agencies to submit a request for data and how that data is collected and handled by communication service providers within their system, setting out the handover details for delivery in OTT (Over-The-Top) messaging services over HTTP/XML of Lawful Interception and Lawful Disclosure.
• Working group: Technical Committee for Lawful Interception | TC LI