| LS | Title | From | To | Approval date |
| SG17-LS145 | LS on SG17 work item X.iotsec-3: Technical framework of PII (Personally Identifiable Information) handling system in IoT environment | SG17 | ISO/IEC JTC1/SC27/WG5; | 2018-09-07 |
| ISO/IEC JTC1/SC27/WG1-LS12 | LS/r (reply to SG17-LSs 87, 88, 91 and 93) from ISO/IEC JTC 1/SC 27/WG 4 | ISO/IEC JTC1/SC27/WG1 | SG17; | 2018-05-07 |
| SG17-LS87 | LS on SG17 progress on “Security framework for using Identity Based Cryptography for IoT services over telecom networks” | SG17 | IETF SAAG; ISO/IEC JTC1/SC27/WG2; ETSI TC CYBER; | 2018-03-29 |
| SG17-LS88 | LS on IoT related activities in ITU-T SG17 | SG17 | ISO/IEC JTC1/SC27/WG4; | 2018-03-29 |
| SG17-LS91 | LS on new work item X.framcdc “Framework of the creation and operation for a Cyber Defense Center” | SG17 | ISO/IEC JTC1/SC27/WG4; ITU-D Q3/2; ETSI TC CYBER; | 2018-03-29 |
| SG17-LS93 | LS on new work item X.sgBDIP “Security Guidelines for Big Data infrastructure and platform” | SG17 | ISO/IEC JTC1/SC27/WG5; ISO/IEC JTC1/SC27/WG4; ISO/IEC JTC1/WG9; SG13; SG20; | 2018-03-29 |
