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About me

I am an IT Security professional, generalist and technical author with more than nine years of experience across cybersecurity roles, including IT Security Manager/Officer (ITSM/ITSO) and Security Engineer.

My professional focus spans IT Security Governance, Risk and Compliance (GRC), vulnerability and exposure management, security operations, security auditing, security posture management, network security and security assessment.

Over the course of my career, I have worked with government agencies and leading technology organizations, supporting initiatives aimed at strengthening security posture, managing cyber risk and meeting regulatory and compliance requirements.

Alongside my professional career, I write practical books on cybersecurity, network security, network automation, firewall operations and incident management. What began as independent technical writing has gradually found its way into university classrooms, postgraduate curricula and academic research internationally.

Publications & Academic Impact

I am the author of seven books covering network automation, firewall technologies, security incident management and cybersecurity certification.

My books have subsequently been independently adopted or referenced by universities, researchers and other technical publications around the world.

University Curriculum & Course Adoption

Incident Handling and Response: A Holistic Approach for an Efficient Security Incident Management has been listed as a reference book, textbook or learning resource in cybersecurity, digital forensics and related programmes at multiple universities and engineering institutions.

Documented examples include:

  • National Forensic Sciences University (NFSU), India — referenced in postgraduate Cyber Security coursework covering Incident Response.
  • Savitribai Phule Pune University (SPPU), India — included in M.Sc. Cyber Security curriculum material.
  • Centurion University of Technology and Management, India — listed as a reference book for the M.Sc. Forensic Science programme and its Incident Response Management course.
  • SJB Institute of Technology, India — included in MCA curriculum material.
  • Visvesvaraya Technological University (VTU), India — referenced within M.Tech Cyber Security curriculum material.
  • Yenepoya Institute of Technology, India — included as a learning resource for postgraduate Cyber Security study.
  • SEA College of Engineering & Technology, India — included in M.Tech Cyber Security curriculum material.
  • Vignanabharathi Institute of Technology, India — referenced in Cyber Security curriculum material.
  • Mangalore Institute of Technology & Engineering (MITE), India — included as a suggested learning resource.
  • Pratibha College of Commerce & Computer Studies, India — referenced within postgraduate Cyber Security coursework.

Other books have also appeared in university course material internationally:

  • Van Hien University, Vietnam — Being a Firewall Engineer used in Firewall Technology / Perimeter Network Protection course material.
  • University Mohamed Seddik Ben Yahia – Jijel, Algeria — Network Automation Using Python 3 referenced in Advanced Networks course material.
  • University of Delta, Nigeria — Network Automation Using Python 3 referenced in MCA course material.

These references demonstrate adoption extending from undergraduate programmes to MCA, M.Sc. and M.Tech/master's-level study.

Books Referenced in Academic Research

My books have also been independently cited in theses and scholarly publications.

Spain — Universitat Politècnica de Catalunya (UPC)
Network Automation Using Python 3: An Administrator's Handbook was cited in the bibliography of a Master's Thesis.

Indonesia — Universitas Kristen Satya Wacana (UKSW)
Researchers Luis Geraldo Mauboy and Theophilus Wellem cited Network Automation Using Python 3 in their peer-reviewed 2022 research article, Studi Perbandingan Library Untuk Implementasi Network Automation Menggunakan Paramiko Dan Netmiko Pada Router Mikrotik, published in JURIKOM (Jurnal Riset Komputer), Vol. 9 No. 4.

Indonesia — Institut Teknologi Telkom Purwokerto
Network Automation Using Python 3 was referenced in undergraduate telecommunications/network-automation research.

Additional documented academic references include research and scholarly material originating from the United States, Ukraine, Georgia and North Macedonia, covering subjects such as network automation, firewall engineering, security architecture and incident handling.

Collectively, the currently documented academic footprint extends across approximately 10 countries.

Industry Recognition

My technical writing has also received recognition outside academia.

CIS Benchmark Reference
Technical material published through Jaacostan was referenced in the CIS Cisco ASA 9.x Firewall Benchmark v1.0.0 (2021) in connection with TLS configuration for HTTPS management access.

Having independent technical work referenced by a CIS Benchmark is particularly meaningful to me because CIS Benchmarks are practical security-hardening resources used by security professionals and organizations internationally.

BookAuthority Recognition

Network Automation Using Python 3: An Administrator's Handbook received recognition from BookAuthority as a notable/new software-automation book.

Cisco Firepower Threat Defense (FTD) NGFW: An Administrator's Handbook was recognized in BookAuthority's firewall-book selections.

Being a Firewall Engineer: An Operational Approach has also appeared in BookAuthority's recommended firewall reading lists.

From Practical Experience to Academic Use

My approach to technical writing has always been centered on converting real-world operational experience into practical, accessible guidance.

The most rewarding outcome has therefore not simply been publishing books, but seeing independently published technical material progress from professional practice into university curricula, postgraduate courses, master's theses and scholarly research.

I continue to work at the intersection of cybersecurity operations, governance, risk, compliance and security assessment, while sharing practical knowledge through my books and technical writing.

Technical Skills

  • IT Security Governance, Risk Management & Compliance (GRC)
  • Security Posture Management
  • Vulnerability & Exposure Management
  • Security Operations
  • Security Incident Management
  • Security Auditing & Internal Assessments
  • Penetration Testing
  • Network Security
  • Database & Systems Security Assessment
  • Firewall Security & Operations
  • Cybersecurity Control Assessment

Certifications:


  • Certified Information Systems Security Professional (CISSP)
  • Offensive Security Certified Professional (OSCP)
  • Offensive Security Wireless Professional (OSWP)
  • Certified Ethical Hacker (CEH) Practical | Master
  • Microsoft Certified: Cybersecurity Architect Expert (SC-100)
  • Microsoft Certified: Azure Security Engineer Associate (AZ-500)
  • CompTIA CloudNetX
  • Certificate of Cloud Security Knowledge (CCSK)
  • ISO/IEC 27001:2022 Lead Implementer

Verify certifications on Credly
Verify certifications on Accredible

Books Published: 


 
 
Note: I don't have any social media accounts. No LinkedIn, No Twitter.

 

 

Popular Posts

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