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 (Steve Harley & Cockney Rebel song) to the album's theme: "...what it is, though, is a fine record that shows Harley obsessed with cabaret and color this time out as evidence the title - "Red is a Mean, Mean Color", "White White Dove", and "Black or White"." Dave Thompson of AllMusic retrospectively reviewed "Timeless Flight" and felt the song displayed "deliberately impenetrable wordplay", but highlighted it as an album standout by labeling it an AMG Pick Track. In 2003 Martin Aston of "Q" wrote: ""Timeless Flight" bears plenty of Harley's melodic hallmarks, but some complex tripwires keep popping up: "Black or White" is a rare showing