ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
During threat modeling of a SaaS customer-relationship platform, the team identifies the risk that privileged help-desk employees could run ad-hoc SQL queries and download the entire customer database. Which architectural control BEST mitigates this insider threat while still allowing the staff to perform day-to-day support tasks?
Decrease all employee password expiration intervals from 90 to 30 days
Place a web application firewall in front of the database to filter unusual query patterns
Add CAPTCHA challenges before any database search performed by support personnel
Assign help-desk staff a role that grants only predefined, read-only queries and requires a separate, higher-privileged role for bulk exports
Segregating duties through role-based access control ensures that routine support activities can be performed with limited privileges, while high-risk functions such as bulk data export require a different role that help-desk staff do not possess. This directly limits the potential damage from a malicious or careless insider. A web application firewall and CAPTCHA focus on external threats, not privileged insiders. Short password lifetimes marginally improve credential hygiene but do not prevent authorized users from abusing legitimate access.
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What is role-based access control (RBAC)?
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Why are WAFs and CAPTCHA not effective for mitigating insider threats?
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What is role-based access control (RBAC), and how does it mitigate insider threats?
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How does placing a web application firewall (WAF) differ from RBAC in mitigating threats?
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Why are CAPTCHA challenges not effective against insider threats?
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Architecture and Design
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