| LS | Title | From | To | Approval date |
| SG20-LS148 | LS/r on the initiation of new work items regarding IoT and SC&C security (reply to SG17-LS114, SG17-LS118, and SG17-LS120) | SG20 | SG17; | 2024-07-12 |
| SG17-LS114 | LS on the new work item X.srgrtem: Security guidelines for real-time event monitoring and integrated management in smart city platforms | SG17 | ISO/IEC JTC1/WG 11; SG16; SG20; | 2024-03-01 |
| SG17-LS118 | LS on the determination of the draft Recommendation ITU-T X.ztd-iot: Security Methodology Framework based on Blockchain for Zero-Touch Deployment in Massive IoT | SG17 | SG20; | 2024-03-01 |
| SG17-LS120 | LS on the initiation of new work items regarding IoT security | SG17 | SG20; | 2024-03-01 |
