A Managed Security Service Provider (MSSP) is a specialised third-party organisation that delivers outsourced security monitoring, threat detection, and incident response services. MSSPs typically operate a Security Operations Centre (SOC) that provides 24/7 surveillance of client environments, analysing logs, alerts, and network traffic to identify and respond to security threats in real time.
Engaging an MSSP can be an effective strategy for organisations that lack the in-house expertise or resources to maintain comprehensive security operations. However, it is important to recognise that outsourcing security services does not transfer accountability for compliance. Organisations must conduct thorough due diligence, establish clear service level agreements, and maintain oversight of their MSSP's performance.