Security hacker another crime such as destroying information contained in that system". These subgroups may also be defined by the legal status of their activities. A white hat hacker breaks security for non-malicious reasons, either to test their own security system, perform penetration tests, or vulnerability assessments for a client - or while working for a security company which makes security software. The term is generally synonymous with ethical hacker, and the EC-Council, among others, have developed certifications, courseware, classes, and online training covering the diverse arena of ethical hacking. A "black hat" hacker is a hacker who "violates computer security for
Black or White the US, selling over one million copies and became the second best selling single of the year. As of August 2018 the song further certified two time platinum for the digital sales. Reviews of the song were generally favorable. David Browne praised: "He still knows how to fashion a hook that will take up permanent residence in your brain (away from its video, "Black or White" is spare and effortless)" "Rolling Stone"s Allan Light in his "Dangerous" review, compares the song unfavourably to "Beat It": "Neither this slow-burn solo nor the Stones-derived riff on 'Black or White' offers the catharsis