The rule 'Netskope Many Unauthorized API Calls' is designed to detect and respond to unauthorized API access attempts made by users within the Netskope platform. It triggers an alert when a user makes more than 10 unauthorized API calls within a short time frame, specifically over a 60-minute period. This is indicative of potentially malicious behavior such as brute force attempts or the use of expired service account credentials. The rule analyzes audit logs from Netskope for REST API calls and focuses on responses indicating unauthorized access (HTTP status codes 403). The severity level of this rule is categorized as high given the implications of unauthorized access in a corporate or organizational environment. It aligns with the MITRE ATT&CK framework under tactic TA0006 (Credential Theft) and technique T1110 (Brute Force). Recommendation for remediation includes reviewing the specifics of the API calls made and verifying the authentication methods used by the account in question. For further guidance, a runbook is provided to assist security analysts in their investigation and response efforts.