Abstract
The study discovered in details the security challenges in the era of globalization in Nigeria and ECOWAS members state is a course for concern. It also hinges on the improvements of border security because it is important and its protection is equated to national security. The challenges posed by trans-border activities are signs of substantial danger to the political, social and economic stability of states. The extent of these crimes committed lead to the widespread fear, violence and crisis; also undermine the security of the states. It is obvious that security in Nigeria and its borders seem to be porous. However, the defense and security arrangement of Nigeria has much to do with our borders. When borders cease to function effectively, different forms of crimes will befall the country and the security of the country will be challenged as Nigeria is experiencing in recent times. For instance, the terrorist groups that pervaded the country causing security challenges and political unrest. Therefore, it could be said that all is not well with our border security with the vulnerabilities of threats that befall the country.