STIR meaning in Computing ?

Answer: What is Secure Telephony Identity Revisited mean?

STIR/SHAKEN, or SHAKEN/STIR, is a suite of protocols and procedures intended to combat caller ID spoofing on public telephone networks. Caller ID spoofing is used by robocallers to mask their identity or to make it appear the call is from a legitimate source, often a nearby phone number with the same area code and exchange, or from well-known agencies like the Internal Revenue Service or Ontario Provincial Police. This sort of spoofing is common for calls originating from voice-over-IP (VoIP) systems, which can be located anywhere in the world.

STIR, short for Secure Telephony Identity Revisited, has been defined as a series of RFC standards documents by a Working Group of the Internet Engineering Task Force. It works by adding a digital certificate to the Session Initiation Protocol information used to initiate and route calls in VoIP systems. The first public connection on the system, typically the VoIP service provider, examines the caller ID and compares it to a known list of IDs they provide to that customer. The provider then attaches an encrypted certificate to the SIP header with the service provider's identity and a trust value. VoIP software on the receiving end can check the authenticity of the message by decrypting STIR using the provider's public key.

For non-VoIP systems, like cell phones and landlines, call routing information is carried by SS7. In these cases, the SIP header is not directly useful as it cannot be sent to users unless they are on a VoIP connection. This is the purpose of the SHAKEN system, short for Signature-based Handling of Asserted information using toKENs. SHAKEN is a suite of guidelines for public switched telephone networks that indicate how to deal with calls that have incorrect or missing STIR information. This may be in the form of additional information in the CNAM information of caller ID indicating the number has been spoofed, but the details have not been finalized.

As of 2019, STIR/SHAKEN is a major ongoing effort in the United States, which is suffering an "epidemic" of robocalls. Both the Canadian Radio-television and Telecommunications Commission and the Federal Communications Commission are requiring use of the protocols by June 30, 2021.

The name was inspired by Ian Fleming's character James Bond, who famously prefers his martinis "shaken, not stirred." STIR having existed already, the creators of SHAKEN "tortured the English language until [they] came up with an acronym.”

reference

Full Form	Category
Student Teacher Improving Relations	Academic & Science
Socio Technical Integration Research	Academic & Science
STI, Incorporated (de-listed)	Business
Short Term Interest Rate	Business
Seek To Improve Reliability	Business
Steps Towards Independence Responsibility	Community
Save The Ichetucknee River	Community
Steps Toward Independence and Responsibility	Community
Secure Telephony Identity Revisited	Computing
Standard Transverse Inversion Ratio	Electronics
Story Time For Independent Readers	General
Special Tool Inspection Report	General
Secure Telephone Identity Revisited	General
Separate Track and Illuminating Radar	General
Steps Toward Independence Responsibility	General
Supplemental Type Inspection Report	General
Special Technical Inspection and Repair	General
Sharing Talents Ideas and Resources	General
Short Term Incentives for Rental	General
Study Till It Resonates	General
Steps Towards Independence and Responsibility	General
Short T1 Inversion Recovery	General
Short Tau Inversion Recovery	General
Strategy Trust Ingenuity and Results	General
Soil Tillage Intensity Rating	General
Sustainable Transportation Initiative of Richmond	Governmental
Storytelling Through International Recipes	International
Short Tau Inversion Recover	Medical
Short T Inversion Recovery	Medical
Short TI Inversion Recovery	Medical
Strategy, Tactics, Implementation, and Review	Military and Defence