ITU‐T's Technical Reports and Specifications 423 Table of Contents Page 1 Introduction ........................................................................................................... 428 1.1 Scope ................................................................................................................... 428 2 Key definitions ........................................................................................................ 429 3 ICT implications in smart sustainable cities ............................................................. 430 4 Architecture of SSC ................................................................................................. 431 5 SSC services, potential cyberthreats and protective measures ................................ 433 6 SSC components and their vulnerabilities ............................................................... 439 7 Security architecture of SSC .................................................................................... 441 8 Cybersecurity and a SSC governance framework .................................................... 443 9 Recommendations to ensure SSC service continuity ............................................... 444 10 Conclusions ............................................................................................................ 447 Abbreviations .................................................................................................................... 448 Bibliography ...................................................................................................................... 450