Osman Erhan Yanar
Istanbul,Başakşehir
Summary
A seasoned cybersecurity professional with over a decade of industry experience, lastly serving as a Head of Information Security. Proven ability to build strong security strategies and lead teams to protect against cyber threats. Skilled in risk assessments, vulnerability identification, and implementing proactive security measures. Ensures compliance with regulations and best practices. Strong relationship builder with a commitment to continuous learning. Seeking a new challenge to leverage skills in a forward-thinking organization.
Overview
13
13
years of professional experience
1
1
Certification
Work History
Head of Information Security
Sigorta Bilgi Ve Gözetim Merkezi
Istanbul
2022.11 - 2024.02
- Full compliance was maintained in management and workflow monitoring of international (ISO 27001, COBIT, PCI DSS), local (KVKK), and in-house information security audit processes and audits.
- By always playing leading role in conducting penetration tests and addressing discovered vulnerabilities, it was ensured that all vulnerabilities were immediately remediated.
- Within scope of Network Security, POC studies were carried out and many devices were commissioned. (NDR, EDR, DRV esc.)
- SIEM management, integrations, updates, and maintenance have ensured that SIEM is operating at 99% efficiency.
Principal Cyber Security Engineer
Platin Bilişim
Istanbul , 34
2021.11 - 2022.11
- Implementation and management of end-to-end SIEM, along with installation of SIEM infrastructure for numerous institutions, was successfully accomplished.
- Orientations were conducted by providing effective leadership and guidance to team members while encouraging their professional development.
- Source data was provided for security vulnerability response processes and audits.
- Total of 12 SIEM clients were managed throughout this process.
SOC SIEM Team Leader
NETAŞ
Istanbul
2021.07 - 2021.11
- Performed hands-on technical lead performing SIEM functions and maintaining systems, while providing technical guidance to team. Total of 20 SIEM clients were managed throughout this process.
SOC SIEM Expert
NETAŞ
Istanbul
2020.07 - 2021.11
- Performed to identify critical elements, weaknesses, and improvement opportunities, 100% evaluation of existing logs and data fields, SIEM processes and tools, and effectiveness measures was conducted in partnership with customer.
IT SOC System Management Specialist
Koçsistem
Istanbul , 34
2018.08 - 2020.07
- For all SIEM clients under responsibility, kick-off meetings, system maintenance, updates, and log source integrations were successfully completed at 100% rate. Additionally, end-to-end SIEM infrastructure was established on-site for Express bank, bank in Azerbaijan.
IT SOC Cyber Security Analyst
Koçsistem
Istanbul
2015.01 - 2018.08
- Incident response was conducted for cyber attacks, and additionally, SIEM integrations for customer log sources were completed with 100% success rate.
Organization Team Leader
Marmara Technical Service
Istanbul
2011.08 - 2014.08
- Management of technical service team and assignment of right team to right job were consistently accomplished with 100% success rate.
Education
Bachelor of Science - Electronic and Communication Engineering
Haliç University
Istanbul06.2009
Skills
- SKILLS & OTHER
- Advanced knowledge and experience in SIEM technology and log management.
- Experience in using monitoring and detection systems for security incidents (SIEM)
- Knowledge and experience in Information Security Technologies such as
- SIEM, EDR
- 10 years of experience as Information Security.
- Experience in DLP technology
- Strong communication skills, prone to teamwork
- Experienced in information security for computers, operating systems, and network devices.
- Incident response to Cyber Attacks
- Researching new attack vectors
- Experienced in information security risk management.
- Devise, implement, and monitor vulnerability response processes
- Proven ability to lead and motivate teams towards achieving common goals.
- Strong organizational and planning skills to manage projects and meet SLAs.
- Experience in Network Security Technologies WAF, LB, Firewalls, IPS - IDS, DDOS, Proxy, Web Gateway, Email Gateway, DLP, antivirus, and VPN devices.
- Performing POC studies in scope of Network Security
- Proficiency in knowledge network security testing tools like Nessus, NMAP
- Assessing potential security vulnerabilities in assets
- Demonstrated ability to design and manage penetration testing engagements from start to finish.
- Knowledge about PCI DSS, KVKK, ISO 27001 COBIT and local regulations
Accomplishments
- Trekking
- Hiking
Certification
IBM Security QRadar SIEM Fundamental Administration
CCNA
Languages
Timeline
Head of Information Security
Sigorta Bilgi Ve Gözetim Merkezi
2022.11 - 2024.02
Principal Cyber Security Engineer
Platin Bilişim
2021.11 - 2022.11
SOC SIEM Team Leader
NETAŞ
2021.07 - 2021.11
SOC SIEM Expert
NETAŞ
2020.07 - 2021.11
IT SOC System Management Specialist
Koçsistem
2018.08 - 2020.07
IT SOC Cyber Security Analyst
Koçsistem
2015.01 - 2018.08
Organization Team Leader
Marmara Technical Service
2011.08 - 2014.08
Bachelor of Science - Electronic and Communication Engineering
Haliç University
IBM Security QRadar SIEM Fundamental Administration
CCNA
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