Certifications Global BioRisk Advisory Council GBAC STAR™ is the cleaning industry’s only outbreak prevention, response, and recovery accreditation for facilities. ISSA CIMS GBAC STAR™ is the cleaning industry’s only outbreak prevention, response, and recovery accreditation for facilities. Women-Owned Business GBAC STAR™ is the cleaning industry’s only outbreak prevention, response, and recovery accreditation for facilities.