A chief security officer (CSO) is responsible for the safety and security of company data, personnel, and assets. CSOs are responsible for preventing data breaches, phishing, and malware, by developing robust safety protocols and crisis management. These executives may also be responsible for physical security, such as preventing trespassers and protecting physical assets. Some tech companies may have a chief information security officer instead of a CSO, reflecting their focus on cybersecurity. CSOs are increasingly in demand, due to the specialized nature of their skill set.