White hat (computer security) White hat (computer security) The term "white hat" in Internet slang refers to an ethical computer hacker, or a computer security expert, who specializes in penetration testing and in other testing methodologies that ensures the security of an organization's information systems. Ethical hacking is a term meant to imply a broader category than just penetration testing. Contrasted with black hat, a malicious hacker, the name comes from Western films, where heroic and antagonistic cowboys might traditionally wear a white and a black hat respectively. While a white hat hacker hacks under good intentions with permission, and a black hat hacker
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