Founded in 1998, Lostar is a Turkey-based information security firm with offices in Istanbul, London, and Sakarya. The company operates across sectors where breach consequences are non-trivial - banking, energy, telecommunications, and public institutions - delivering penetration testing, security assessments, compliance consulting, and continuous monitoring services.
The technical stack spans IT governance, business continuity, and offensive security work. Their proprietary platform, ABOME, handles continuous security monitoring for clients who need ongoing visibility rather than point-in-time snapshots. Over more than two decades, the team has completed upward of 1,000 projects, building deep vertical expertise in highly regulated industries.
Culture signals point toward knowledge sharing and university partnerships alongside hands-on work. The firm positions itself at the intersection of deep technical rigor and practical business context - a combination that matters when translating vulnerability findings into remediation timelines stakeholders actually act on.
