Post covid-19 era in Nigeria is a period to embark on security measures for ameliorating the ill effects of covid-19 pandemic which stand as insecurity in the nation. Provision of security in post covid-19 era in Nigeria can be done by applying electronics. The discussion in the paper is that the use of electronics such as telecommunication and computer can be utilized in provision of security to the people of Nigeria in the post covid-19 era characterized with free movement in the nation. Issues the paper addressed were understanding of telecommunication and computer, security as a means for development, and provision of security in post covid-19 era using telecommunications and computer. It was pointed out that integration of telecommunication and computer resulted to emergence of Information Technology of which its prominent aspect is the Internet; and it has security value. The paper explained that telecommunication and computer is valuable in provision of security in post covid-19 era in Nigeria for they can be applied in communication, income generation and education. Certain recommendations were made in the paper. The paper concluded that electronics is a prominent aspect of science and technology in this 21st century; and telecommunication and computer as aspect of electronics can be utilized to wipe out the ugly effects of the pandemic so as to ensure national security, especially human security. Key Words: electronics, telecommunication, computer, security, post covid-19, Nigeria