CISO (Chief Information Security Officer) Home Cybersecurity Dictionary CISO (Chief Information Security Officer) The Chief Information Security Officer (CISO) is a senior executive responsible for an organization’s information and data security. In this evolving role CISOs develop and run enterprise-wide processes aimed at reducing IT and business risk as well as assuring regulatory compliance. The position has historically been tasked with a predominately technical mission, but recently more sophisticated companies have begun relying on the CISO for strategic insights about how to best enable digital transformation initiates. Industry expert Larry Ponemon notes that today’s top CISOs pair their technical expertise with business backgrounds, such as an MBA, and strong soft skills, which help communicate with other organizational leaders. Most CISOs have Certified Information Systems Security Professional (CISSP), Certified Information Security Manager (CISM) and Certified Ethical Hacker (CEH) certifications. Related Terms Share: Seeking Clarity? View the Cybersecurity Dictionary for top terms searched by your peers. Back to the Dictionary How Can We Help? Let us know what you need, and we will have an Optiv professional contact you shortly.