Hello,
I’ve just read this [1] article.
My understanding of the case is that Lingo Telecom attested with an A-level some outbound calls sent by Life Corporation through a Lingo Telecom-provided SIP trunk, though these calls were not using any DID provided by Lingo Telecom to Life Corporation.
My questions are:
- Did the calls use some legitimate DID provided to Life Corporation by an other telephony provider or did they use some random DID not provided to Life Corporation at all ?
- What attestation level should have been used by Lingo Telecom, in the first place ? B or C ?
[1] Telco fined $1M for transmitting Biden deepfake without verifying Caller ID | Ars Technica
Best regards