In ethical hacking testing, what approaches exist for the ethical hacker to choose from depending on how much information is known about the target system?

Black Box Testing,

0,

Grey Box testing,

White box Testing

Pen testing as a service, white box testing and internal pen testing

Explanation:

Pen or penetration testing is a strategy used by companies to harden their network security policies. It hires a pen tester to mimic an attack on the private network, providing little or no information to the tester and sometime with the members of the organization not being aware of the test.

There are several strategies penetration testers use to test for network vulnerabilities. They are black box test, white box test, internal test, external test, blind test, double blind test, pen testing as a service etc.

Some of these test provides information about the network to the tester like internal test, white box test and pen testing as a service.