Deborah O

Cyber Security Expert

Innovation through technology • Freelance

May 2021 - Nov 2025 • 4 yrs 6 mos

I have worked as a Cyber Security Expert, focusing on protecting organizational systems, networks, and data from evolving cyber threats. In my role, I monitored network activity, conducted vulnerability assessments, and performed penetration testing to identify and mitigate security risks. I implemented robust security measures, including firewalls, intrusion detection systems, and endpoint protection, while ensuring compliance with industry standards such as ISO 27001 and NIST. I also played a key role in incident response, quickly detecting and resolving security breaches to minimize impact and maintain business continuity. Throughout my experience, I have successfully strengthened security postures by reducing vulnerabilities and preventing potential cyberattacks through proactive threat analysis and system hardening. I have collaborated with cross-functional teams to develop security policies, trained staff on cybersecurity awareness, and improved overall resilience against phishing and malware attacks. My work has consistently resulted in improved system performance, reduced risk exposure, and increased client confidence by delivering secure and reliable digital environments.