Monitor computer systems for security issues. Investigate security breaches and other cyber security incidents. Install security measures and operate software to protect systems and information infrastructure, including firewalls and data encryption programs. Document security breaches and assess the damage they cause. Work with security team to perform tests and uncover network vulnerabilities. Fix detected vulnerabilities to maintain a high-security standard. Stay current on IT security trends and news. Develop company-wide best practices for IT security. Perform penetration testing.