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 + White Mobile Black + White Mobile Black+White was a New Zealand mobile virtual network operator which used Vodafone New Zealand's GSM (and UMTS networks, where available). When the company was operational, their handsets were compatible with the Vodafone network and some may also be compatible with Spark's network. The handsets are similar to Vodafone's handset range but are sold at different prices. Although they operate on Vodafone's network, Black+White use their own mobile numbers with the 028 prefix at the beginning of the mobile number. Black+White was established in October 2008 by a former Telecom executive. It aimed to offer New Zealand