What you need to know Microsoft CISO Bret Arsenault will leave his current role and become Chief Security Advisor at the company next year. Igor Tsyganskiy will replace Arsenault as CISO effective January 1, 2024. In his new role, Arsenault will oversee Microsoft's partners, customers, government clients, and important communities. Bret Arsenault, who has served as Microsoft Chief Information Security Officer (CISO) for 14 years, will shift to a new role at the company. Arsenault will become Microsoft's Chief Security Advisor, which focuses on "escalating [Microsoft's] impact across the entire ecosystem," according to Microsoft Executive President of Security Charlie Bell….