| LS | Title | From | To | Approval date |
| SG20-LS74 | LS/r on the new work items initiated at ITU-T Study Group 17 (reply to SG17-LS44, SG17-LS46, SG17-LS53, SG17-LS70, SG17-LS79, and SG17-LS86) | SG20 | SG17; | 2023-09-22 |
| SG17-LS70 | LS on new work item on draft new Recommendation ITU-T X-cs-ra: Cyber Security Reference Architecture | SG17 | ISO/IEC JTC1/SC27; SG11; SG13; SG20; ISO/IEC JTC1/WG13; | 2023-09-08 |
| SG17-LS79 | LS on the new work item on Security requirements and guidelines of sensing and data collection system for city infrastructure | SG17 | SG20; | 2023-09-08 |
| SG17-LS86 | LS on the initiation of new work item ITU-T X.sr-iiot: Security requirements for the industrial Internet of things based smart manufacturing reference model | SG17 | SG20; | 2023-09-08 |
| SG17-LS44 | LS on new work item on draft new Recommendation ITU-T X.DLT-ccs-fr “Security requirements and framework of cross-chain service for DLT systems” | SG17 | ETSI ISG IPE; SG13; SG16; SG20; | 2023-03-03 |
| SG17-LS46 | LS on new work item: X.suppl.tig-iotsec “Technical implementation guidelines for IoT devices and gateway” | SG17 | SG20; | 2023-03-03 |
| SG17-LS53 | LS on new work item on draft new Recommendation ITU-T X.srgsc “Security requirements and guidelines of application and service for smart city platform” | SG17 | ISO/IEC JTC1/SC27/WG5; SG20; | 2023-03-03 |
