Sarah Moon photography rather than modelling, adopting Sarah Moon as her new name. She successfully captured the fashionable atmosphere of London after the "swinging sixties", working closely with Barbara Hulanicki, who had launched the popular clothes store Biba. In 1972, she shot the "Pirelli" calendar, the first woman to do so. After working for a long time with Cacharel, her reputation grew and she also received commissions from Chanel, Dior, Comme des Garçons and "Vogue". In 1985, Moon moved into gallery and film work. She later directed the music video for Cheb Khaled's pop hit Aïcha. Sarah Moon Sarah Moon (born 1941),
Biba Model down"). The Biba model defines a set of security rules, the first two of which are similar to the Bell–LaPadula model. These first two rules are the reverse of the Bell–LaPadula rules: Biba Model The Biba Model or Biba Integrity Model developed by Kenneth J. Biba in 1975, is a formal state transition system of computer security policy that describes a set of access control rules designed to ensure data integrity. Data and subjects are grouped into ordered levels of integrity. The model is designed so that subjects may not corrupt data in a level ranked higher than the subject,