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| LS | Title | From | To | Approval date |
| SG17-LS218 | LS/r on X.1058 | ISO/IEC 29151: Information technology – Security techniques – Code of practice for personally identifiable information protection | SG17 | ISO/IEC JTC1/SC27/WG5; | 2019-09-05 |
| ISO/IEC JTC1/SC27/WG2-N19685 | LS/r on SG17 work item X.ibc-iot: Security framework for using Identity Based Cryptography for IoT services over telecom networks | ISO/IEC JTC1/SC27/WG2 | SG17; | 2019-04-01 |
| 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 |
| SG17-LS147 | LS on SG17 work item X.ibc-iot: Security framework for using Identity Based Cryptography for IoT services over telecom networks | SG17 | ISO/IEC JTC1/SC27/WG2; | 2018-09-07 |
| SG17-LS154 | LS on revision of ITU-T X.1254 Entity authentication assurance framework | SG17 | ISO/IEC JTC1/SC27/WG5; | 2018-09-07 |
| ISO/IEC JTC1/SC27/WG1-LS13 | LS/r (reply to SG17-LSs 86, 92 and 93) | ISO/IEC JTC1/SC27/WG1 | SG17; | 2018-07-02 |
| 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-LS86 | LS on SG17 progress on 'Technical framework of PII (Personally Identifiable Information) handling system in IoT environment' | SG17 | ISO/IEC JTC1/SC27/WG5; | 2018-03-29 |
| 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-LS92 | LS/r response to incoming LS and Q10/17 update (reply to N18110) | SG17 | ISO/IEC JTC1/SC27/WG5; | 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 |
| ISO/IEC JTC1/SC27-N18110 | LS/r (reply to SG17-LSs 42, 43, 58, 59, 64, 65, 66) | ISO/IEC JTC1/SC27 | SG17; | 2018-02-15 |
| SG17-LS43 | LS on Distributed Ledger Technologies Security | SG17 | ISO/IEC JTC1/SC27; SG3; SG11; SG13; SG16; SG20; FG-DPM; ISO TC 307; FG DLT; FG DFC; | 2017-09-06 |
| SG17-LS42 | LS on ' Security Requirements and Framework of Using Identity-Based Cryptography Mechanisms in Internet of Things ' [to 3GPP SA3, ETSI TC CYBER, GSMA FASG, IRTF CFRG, IETF Security Area, ISO/IEC JTC 1/SC 27/WG 2] | SG17 | 3GPP TSG SA3; IETF Security Area; IRTF; ISO/IEC JTC1/SC27/WG2; ETSI TC CYBER; GSMA FASG; | 2017-09-06 |
| SG17-LS58 | LS on 'Technical framework of PII (Personally Identifiable Information) handling system in IoT environment' | SG17 | ISO/IEC JTC1/SC27/WG5; | 2017-09-06 |
| SG17-LS59 | LS/r on collaboration on governance of information security management and cyber insurance | SG17 | ISO/IEC JTC1/SC27/WG1; | 2017-09-06 |
| SG17-LS64 | LS on entity authentication assurance collaboration | SG17 | ISO/IEC JTC1/SC27/WG5; | 2017-09-06 |
| SG17-LS65 | LS on 'Guideline on the IoT Security and Privacy' | SG17 | ISO/IEC JTC1/SC27/WG4; | 2017-09-06 |
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