Mark Denihan
Chief Information Security Officer
Ireland
Summary
🤩
Rockstar🎓
Top SchoolMark Denihan is a seasoned information security leader with 11 years’ hands-on experience, currently serving as Chief Information Security Officer at Synchronoss Technologies. He specializes in application and web security, penetration testing, and building testing utilities, with a track record of moving from Senior Ethical Hacking Engineer to CISO through technical leadership roles. An active contributor to OWASP and the Honeynet Project, he blends practical offensive testing with pragmatic issue resolution and secure product architecture. Mark is completing an MSc in Information Security and Digital Forensics and holds a BSc in Computing, reflecting a strong academic foundation in security and software development. Known for developing bespoke hacking tools and automation to accelerate testing, he brings both technical depth and operational insight to risk reduction and secure development lifecycles. Based in Ireland, he combines public speaking and community engagement with enterprise security strategy and hands-on remediation.
11 years of coding experience
12 years of employment as a software developer
MSc of Computing Information Security and Digital Forensics, MSc of Computing Information Security and Digital Forensics at Technological University Dublin
Github Skills (34)
penetration-testing10
maven-plugin10
software-composition-analysis10
mobile-application10
application-security10
security10
jenkins-plugin10
gradle-plugin10
composition9
vulnerability-detection9
ant-task9
sca9
vulnerabilities9
credentials8
moodle8
Programming languages (6)
Github contributions (5)
OWASP/www-project-security-shepherd
Jan 2020 - Apr 2021
OWASP Foundation Web Respository
Contributions:4 commits, 6 PRs, 3 pushes in 1 year 3 months
checklistweb-application-securityweb-foundationsecurityowasp
OWASP/SecurityShepherd
Sep 2014 - Oct 2020
Web and mobile application security training platform
Contributions:4 releases, 11 reviews, 283 commits in 6 years 1 month
application-securitymobile-applicationsecuritypenetration-testingtraining
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