A double blind penetration test is a type of pen test where the hacker has no prior knowledge of the target’s defenses, assets, or channels, and the target’s security team is not notified in advance of the scope of the audit and the test vectors. This mode simulates a real-world attack scenario, where both the attacker and the defender have to rely on their skills and resources to achieve their objectives. A double blind penetration test can help evaluate the effectiveness of the target’s security posture, detection and response capabilities, and incident management procedures12.

References:

What is Penetration Testing | Step-By-Step Process & Methods | Imperva

7 Types of Penetration Testing: Guide to Pentest Methods & Types