| LS | Title | From | To | Approval date |
| SG17-LS190 | LS/r on simple encryption procedure for IoT device security and on security issues related to the future Networked Car for SG17 (reply to SC 27 N14779from ISO/IEC JTC 1/SC 27/WG2) | SG17 | ISO/IEC JTC1/SC27/WG2; | 2015-04-17 |
| ISO/IEC JTC1/SC27/WG2-N14779 | ISO/IEC JTC 1/SC 27/WG 2 liaison statement to ITU-T SG 17 on CMS, Encryption procedure for IoT device security | ISO/IEC JTC1/SC27/WG2 | SG17; | 2014-10-24 |
| SG17-LS136 | LS/r on draft Recommendation ITU-T X.cms (reply to ISO/IEC/JTC 1/SC 27 N14245, N14241, N14128, N13961 (TD 1216)) | SG17 | ISO/IEC JTC1/SC27/WG2; | 2014-09-26 |
| SG17-LS152 | LS on new work item on simple encryption procedure for IoT device security | SG17 | 3GPP (GSMA/UMTS) TSGs GERAN, RAN CT and SA; ETSI TC ITS; ISO/IEC JTC1/SC27/WG2; oneM2M; | 2014-09-26 |
| ISO/IEC JTC1/SC27-N14245 & N13738 | ISO/IEC JTC 1/SC 27 liaison statement to ITU-T SG17 (Security) | ISO/IEC JTC1/SC27 | SG17; | 2014-04-15 |
