What does SIS stand for?

MLA style: "SIS." Acronym Finder . 2013. AcronymFinder.com 24 May. 2013 <a href="http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html">http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html
Chicago style: Acronym Finder . S.v. "SIS." Retrieved May 24 2013 from <a href="http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html">http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html
APA style: SIS. (n.d.) Acronym Finder. (2013). Retrieved May 24 2013 from <a href="http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html">http://www.acronymfinder.com/Servi%c3%a7os-de-Informa%c3%a7%c3%a3o-e-Seguran%c3%a7a-(SIS).html

Serviços de Informação e Segurança

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