European Communcations Office

ECC Work Programme Database

   
Work Item details
Reference NPS_06
Short Name CLI Spoofing
ETSI Workitem
ETSI Deliverable
Subject ECC Report on CLI Spoofing
Related WI
Scope Calling/Caller ID spoofing is a technique where the information displayed in the CLI field is manipulated with the intention of deceiving the called party into thinking that the call originated from another person, entity or location. It is very often used by fraudsters to take advantage of the inherent trust that end-users have in the integrity of CLI information to facilitate scams. But also some operators use CLI spoofing for illegal rerouting/arbitrage schemes (e.g. roaming non EU- originated traffic). Manipulation of CLI can also be a part of a legitimate activity and this adds complexity.

In this work item the ECC will address :
- the legal aspects (prohibition, exceptions, appropriate legal instruments,…);
- the possible technical measures for the different technologies to verify and authenticate the CLI with pros and contras;
- the operational impact for the different stakeholders with cost aspects;
- different aspects of the rollout of the solutions;
- impact on regulatory authorities and possible measures.

Deliverable ECC Report
Responsible group WG NaN - NaN2
Start date 31-05-2018
Target date 26-11-2021
Public Consultation 06-12-2021
Regular Work Item False
Comments
Keywords CLI Spoofing, Fraud, calling party number delivery, IP, PSTN, PLMN, Calling Line Identification Presetation, CLIP
Worked by PT NPS
Contact Vassil Krastev (vassil.krastev@eco.cept.org)
Status In Progress
Triggered By Belgium, Norway, Latvia, Italy and UK
Progress Report Work item approved at the 16th meeting of WG NaN in Reykjavik, Iceland

Two web meetings (01 December 2020 and 19 January 2021) were held  to continue the work on the draft ECC Report on CLI Spoofing.

During the 29th NaN2 meeting the latest version of the draft report was reviewed. It was agreed to schedule three further web meeting for 05 March 2021, 15 March 2021 and 09 April 2021 to continue the work. 

Progress on the draft report was made during the web-meetings held on 05 and 15 March 2021.

Progress on the draft report was made during the web-meetings held on 09 and 29 April 2021.

During the 30th NaN2 meeting the latest version of the draft report was reviewed. It was agreed to schedule a further web meeting prior to the next full meeting of NaN2. 

Progress on the draft report was made during two web-meetings held on 2 August and 20 September 2021.

During its 31st meeting, NaN2 agreed to submit the draft ECC Report on CLI Spoofing to the next meeting of WG NaN (23-25 November 2021) for approval for public consultation.

Approved for public consultation at WG NaN #23 (23-25 November 2021).

Public Consultation: Draft ECC Report 338 - 6 December 2021 until 14 March 2022