A targeted add-on for E3 or lower-tier customers, unlocking Microsoft Purview Insider Risk Management — detecting, investigating, and acting on potentially malicious or accidental risky activity from within the organisation (e.g. data theft by departing employees). Also includes Information Barriers, Customer Lockbox, and Privileged Access Management. A lower-cost alternative to the full E5 Compliance add-on for organisations specifically needing internal threat detection.