The internet of things (IoT) is everywhere. It's in our homes, cars, offices and most commonly around our wrists. It's changing the way factories are run, how health care is delivered and how cities operate. With an estimated 5.5 million new "things" connected each day, and an expected 6.4 billion in circulation by the end of 2018, the IoT will increasingly become part of our lives. But with the IoT's proliferation comes great responsibility. You cannot take the security of the rapidly expanding IoT ecosystem for granted. Even the smallest, most minimally connected device must have the appropriate safeguards built in throughout its lifecycle. It is time to focus on IoT security at the point of design to securely manage devices from inception through implementation. The potential of IoT devices and sensors is enormous, even in Nigeria, but if the security of each device and application is taken lightly, it is very likely that the exploitation of unguarded vulnerabilities will stop the progress, preventing us from ever fully realizing that vast potential. This paper takes a comprehensive survey of the security architecture, vulnerabilities and challenges facing the successful implementation of IoT in Nigeria and proposed far-reaching and holistic security solutions to protect IoT devices/servers, the network and applications from being exploited by hackers, malwares and other undesirable elements so that the opportunities from IoT implementations will be realised in Nigeria in the nearest future.
                                
                                
                                    
                                    IoT ; vulnerability ; malwares ;  DMZ ; holistic security ; Nigeria
                                
                                
                                
                                
                                    
                                        
                                        
                                        
                                        
                                            
                                                
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