Security convergence refers to the convergence of two historically distinct security functions – physical security and information security – within enterprises; both are integral parts of a coherent risk management program. Security convergence is motivated by the recognition that corporate assets are increasingly information-based. In the past, physical assets demanded the bulk of protection efforts, whereas information assets are demanding increasing attention. Although generally used in relation to cyber-physical convergence, security convergence can also refer to the convergence of security with related risk and resilience disciplines, including business continuity planning and emergency management. Security convergence is often referred to as 'converged security'.
According to the United States Cybersecurity and Infrastructure Security Agency, security convergence is the "formal collaboration between previously disjointed security functions. Survey participants in an ASIS Foundation study The State of Security Convergence in the United States, Europe, and India define security convergence as "getting security/risk management functions to work together seamlessly, closing the gaps and vulnerabilities that exist in the space between functions."
In his book Security Convergence: Managing Enterprise Security Risk, Dave Tyson defines security convergence as "the integration of the cumulative security resources of an organization in order to deliver enterprise-wide benefits through enhanced risk mitigation, increased operational effectiveness and efficiency, and cost savings."
Security Convergence discusses security management, electronic security solutions, and network security and the manner in which all of these interact. Combining security procedures and arriving at complete security solutions improves efficiency, greatly improves security, and saves companies money.