SERI-2021 was a success with the presence of our valuable Guest Speakers who lead the discussion in various session in just the right direction showering the audiences with their esteemed valuable knowledge and insights in the field.The various sessions we had such as "Quad: Cyber security capabilities", "National Interventions and Programs for Security Education", "Cyber First: This and next generation", "Crypto: Releasing possibilities" etc.not only focussed on the present scenario but also defined the futuristic scope of in the filed of cyber-security.The Conference had an interesting competition judged by the top scholarly of cyber-security field as Paper-Presentation which saw number of entries and few finally making it to the top.This book has the top 3 papers presented.Hope you will enjoy surfing through new interventions in the field.