A Managed Security Services Provider or â€œMSSPâ€ helps organizations monitoring and management cybersecurity across its IT systems and devices. Clients typically contract with MSSPs to handle the day-to-day security operations for which their in-house IT department is either understaffed or ill equipped to support. For example, MSSPs handle the configuring and monitoring of firewalls and other cybersecurity technologies and systems on the clientâ€s corporate network.