Even A-level SHAKEN attestation asserts only that the originating provider vouches for the caller's right to use the calling number; it does not show that the person on the line is the account holder, so it is a risk signal rather than caller authentication.
inferred · Checked 2026-09-30
- Vendor
- IETF
- Product
- SHAKEN PASSporT
- Subsystem
- attestation
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 8588
- Status
- inferred
- Checked
- 2026-09-30
Sources
- RFC 8588: Personal Assertion Token (PaSSporT) Extension for Signature-based Handling of Asserted information using toKENs (SHAKEN) — IETF / RFC Editor · tier 1 standards and regulators · Sec. 4 attest claim
Cite this note
APA
WarmTransfer. (2026, September 30). Caller authentication and fraud prevention in contact centers: source note contact-center-caller-authentication-attestation-not-identity. WarmTransfer. https://warmtransfer.net/knowledge/claims/contact-center-caller-authentication-attestation-not-identity
BibTeX
@misc{warmtransfer-claim-contact-center-caller-authentication-attestation-not-identity,
title = {Caller authentication and fraud prevention in contact centers: source note contact-center-caller-authentication-attestation-not-identity},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/contact-center-caller-authentication-attestation-not-identity},
note = {Source note contact-center-caller-authentication-attestation-not-identity, checked 2026-09-30}
}