White-box testing The real point is that tests are usually designed from an abstract structure such as the input space, a graph, or logical predicates, and the question is what level of abstraction we derive that abstract structure from. That can be the source code, requirements, input space descriptions, or one of dozens of types of design models. Therefore, the "white-box / black-box" distinction is less important and the terms are less relevant. In penetration testing, white-box testing refers to a methodology where a white hat hacker has full knowledge of the system being attacked. The goal of a white-box penetration test
Black or White to be promoted on radio stations the first week of November 1991 in New York and Los Angeles. "Black or White" was officially released one week later, on November 5, 1991. The song has elements of dance, hip hop and hard rock music such as Bill Bottrell's guitars and Jackson's vocal style. This song is played in the key of E major, with Jackson's vocal spanning from E3 to B4, and its tempo is measured at 115 BPM. The song's main riff is often incorrectly attributed to Guns N' Roses guitarist Slash. His guitar playing is actually heard in the