Cybersecurity Company Helping Organizations Strengthen Their Digital Security

Independent Cybersecurity Company

About Our Cybersecurity Company

Cybersecurity Company with Decades of Experience

25+ years of supporting organizations throughout their digital security journey.

As an independent cybersecurity company, Lostar helps organizations strengthen operational continuity, regulatory compliance, customer trust, and corporate resilience.

Since 1998, our cybersecurity company has supported organizations with a holistic approach to information security. Our services range from penetration testing and technical security assessments to IT governance, risk management, and regulatory compliance.

Through our offices in Istanbul, Sakarya, and London, our cybersecurity company combines local expertise with international information security standards to develop practical, measurable, and sustainable security solutions tailored to each organization’s needs.

Cybersecurity and information security expertise

IT governance, risk, and compliance consulting

Local expertise and international standards

Our Service Areas

What Our Cybersecurity Company Does

As an experienced cybersecurity company, Lostar provides specialized services across multiple areas to help organizations strengthen their security posture, manage cyber risks, and improve cybersecurity maturity.

Penetration Testing Services

We perform penetration testing for web applications, mobile applications, internal networks, external networks, wireless networks, and API systems. By testing from a real-world attacker perspective, we identify and prioritize organizations’ security vulnerabilities.

Source Code Security

We assess software security processes and identify vulnerabilities during the development stage, helping organizations build more secure applications.

IT Governance, Risk and Compliance

We provide consulting services in enterprise risk management, information security management systems, business continuity, and regulatory compliance.

Regulatory and Audit Processes

We support organizations throughout audit and compliance processes under frameworks such as BRSA, CMB, EMRA, PDPL, ISO 27001, PCI DSS, COBIT, and DORA.

Digital Forensics and Incident Response

We provide technical support for cyber incident investigations, digital evidence analysis, and incident response processes.

Third-Party Security Management

We assess the security posture of suppliers and business partners, helping organizations manage third-party risks more effectively.

Our Working Model

Our Approach

Every organization has a different risk profile, operational priorities, and regulatory requirements.

As a cybersecurity company, Lostar develops a security approach tailored to each organization rather than relying on standardized outputs.

We do more than simply list vulnerabilities; we assess their business impact, prioritize them, and provide actionable recommendations that support practical risk reduction.

We communicate effectively with technical teams while also producing measurable and easy-to-understand outputs for management teams. This approach helps make cybersecurity processes more manageable, transparent, and sustainable across the organization.

Organization-Specific Assessment

We develop our approach according to each organization’s risk profile, operational priorities, and regulatory requirements.

Prioritization by Business Impact

We assess security vulnerabilities not only from a technical perspective, but also in terms of their real impact on the organization.

Actionable Outcomes

We provide clear, measurable, and actionable security outputs for both technical and management teams.

An Approach That Makes a Difference

Why Lostar?

As an independent cybersecurity company, Lostar addresses organizations’ security needs not only through technical findings, but also through business impact, regulatory expectations, and actionable next steps.

Independent Approach

We conduct security assessments from an objective perspective, helping organizations gain a clear understanding of their actual risk level without being tied to specific technologies or vendors.

Technical Depth

Drawing on years of hands-on experience, we evaluate technical security processes against realistic attack scenarios and real-world threat conditions.

Regulatory Expertise

Our experience across highly regulated sectors such as finance and energy enables us to effectively support organizations throughout their security, audit, and compliance processes.

Actionable Outcomes

We connect technical findings with business objectives and provide clear, prioritized, measurable, and actionable security recommendations.

Corporate History

Milestones

1998

Lostar Information Security Inc. was established.

1999

We delivered our first penetration testing service.

2000

We delivered our first Information Security Management System consulting engagement.

2001

We obtained Türkiye’s first CISSP certification.

2003

We completed the CISSP-ISSMP and CSSLP certification processes.

2009

Our General Manager, Murat Lostar, became the founding president of the ISACA Istanbul Chapter.

2013

We took part in the formation of Cloud Security Alliance Turkey.

2014

We launched our Continuous Security approach with ABOME.

2015

We obtained our ISO 27001:2013 certification.

2016

We completed our cybersecurity project.

2016

We opened our Sakarya office.

2017

With 23 technical experts, we became one of Türkiye’s largest cybersecurity teams.

2018

We opened our London office.

2023

We celebrated 25 years of cybersecurity experience.

2025

We completed more than 450 penetration tests during the year.

2026

We became an EMRA-authorized audit firm under the Cybersecurity Competency Model for the Energy Sector.

We Make Security More Manageable

Contact us to evaluate your cybersecurity processes, risks, and compliance requirements together. With Lostar experts, you can build a more sustainable and measurable security approach for your organization.