Exact Extract: "Attribute: Event Type Operator: IN Value: EventTypes: Logon Failure." The same section explains that when selecting a group from the CMDB, "the value displays Group: < Name > when you select the group from CMDB initially." The correct answer is B because FortiSIEM uses the IN operator when a search condition references a CMDB group or category. In this case, the value is Group: Logon Success , meaning the query is not matching one literal event type string; it is matching membership in a CMDB event type category. Therefore, the condition should be configured as Event Type IN Group: Logon Success . CONTAIN is for substring matching, such as checking whether a text field contains a word. IS or exact equality-style logic would be appropriate for a single specific value, not a CMDB group. HAS is not the correct operator for matching Event Type membership in a CMDB category.
Technical Deep Dive: In FortiSIEM analytics, CMDB-backed values are object groups, not simple strings. The IN operator tells FortiSIEM to expand the selected CMDB group and match any event type inside that category. This is cleaner than manually adding many Event Type OR conditions. For example, a "Logon Success" group can include multiple normalized success-login event types across Windows, VPN, Unix, and other sources. This is SIEM query logic only; NP/CP ASIC offloading does not apply because FortiSIEM is searching normalized event data, not processing FortiGate traffic flows.