I. INTRODUCTION  
II. PRE-QUANTUM VERSUS POST-QUANTUM IOT SECURITY  
III. POST-QUANTUM INITIATIVES  
IV. POST-QUANTUM PUBLIC-KEY CRYPTOSYSTEMS  
V. SECURITY IN IOT COMMUNICATIONS ARCHITECTURES  
VI. POST-QUANTUM IMPLEMENTATION PERFORMANCE  
VII. MAIN CHALLENGES AND FUTURE TRENDS IN POST-QUANTUM IOT DEVELOPMENTS  
VIII. CONCLUSION  