STIR/SHAKEN: Fighting Phone Fraud and Robocalls in VoIP
Call authentication is an increasingly urgent issue in the telecommunications market. Since 2023, the FCC in the United States has required the implementation of the STIR/SHAKEN (Secure Telephone Identity Revisited / Signature-based Handling of Asserted Information Using Tokens) protocol to combat fraudulent calls and robocalls. Thus, in Brazil, the Anatel is moving in the same direction. So, understanding this standard and adopting it puts Voicecorp at the forefront of security and transparency.
What is STIR/SHAKEN?
STIR/SHAKEN is a set of technologies that validates the origin of a call telefônica. Thus, each call receives a digital certificate that proves the caller's identity and ensures that the displayed number has not been tampered with. When the call passes through different networks, the certificate is verified, and if it is healthy, the connection is completed. In this way, spoofed calls are eliminated and the occurrence of scams is drastically reduced.
Benefits
- Reduction of fraud and robocalls: by validating the caller's number, spoofing is intercepted and scams are inhibited.
- User trust: Authenticated calls increase carrier credibility and improve the customer experience.
- Regulatory alignment: Authorities such as Anatel and the FCC are setting deadlines for the adoption of the standard, so anticipating implementation avoids fines and ensures compliance.
- Integration with VoIP: the standard applies to both TDM and VoIP networks and integrates with SIP protocols through digital signatures.
How it works in practice
- Header Signing SIP: The originating carrier uses a certificate issued by a trusted authority to digitally sign the "From" field of the SIP header. Thus, this certificate contains information about the line and the operator.
- Signature Transport: The signature and certificate are transported in the Identity Header SIP each call.
- Verification on the destination network: The receiving operator validates the signature with the certifying authority. If the number is correct, the call is accepted; otherwise, the carrier may block or label the call as potential spam.
The Voicecorp stands out for its presence in several PTTs (Internet Exchange Points), its own data center and national coverage. The adoption of standards such as STIR/SHAKEN reinforces the company's commitment to a more secure and reliable telecommunications ecosystem. Some measures that the market has been implementing include:
- Obtaining certification: Registration with Anatel/FCC approved certification authorities for the issuance of identity certificates.
- Updating the SBC: Suitability of Softswitches and SBCs (Session Border Controllers) for signing and verifying SIP calls.
- Educating customers: Dissemination of educational materials that explain how the STIR/SHAKEN protects users, contributing to safer communication.
- Anti-Volumetric Integration: Combine STIR/SHAKEN with robocall detection systems to reduce automated mass calls.
By adopting these practices in its network, Voicecorp strengthens its position as an operator VoIP committed to the Safety, innovation and confidence in the Brazilian market.
Therefore, with the STIR/SHAKEN, Voicecorp guarantees a new standard of security and transparency in VoIP calls. We are strategic partners for companies seeking innovation, providers looking to expand their services, and teams prioritizing trust in communications.
👉 Talk to our www.voicecorp.com.br experts now and hire a VoIP operator safely!
