Security expertise without the noise.
SIPHER brings strategy, offensive security, incident response, digital forensics, technology and education into one independent cybersecurity practice.
Start with the risk. Stay close to reality.
We do not begin with a product catalogue. We begin with the environment, the exposure and the decision that needs to be made.
Independent
Technology is selected for the security outcome, not the other way around.
Technical
Recommendations are grounded in how systems fail, attacks unfold and controls operate.
Practical
Work should leave behind clearer decisions, stronger controls and more capable teams.
Experience behind the practice.
SIPHER was founded by Onur Karaahmetoğlu, a cybersecurity professional with more than two decades of experience across security consulting, training, offensive security, privacy and security technologies.
The practice is designed to connect executive risk with technical reality — and to remain useful before, during and after a security incident.
One practice. Multiple ways to engage.
Advisory, defined projects, incident response, retainers and training can stand alone or work together as the situation evolves.
Advisory
Ongoing security guidance for leaders and technical teams.
Projects
Focused assessments, testing, investigation and engineering work.
Response
Structured support when a cyber incident requires immediate action.
Capability
Training and retained expertise that strengthen readiness over time.
Active security incident?
Prioritize containment and evidence preservation. Go directly to the incident response path.
Incident Response →Start with the problem.
Tell us what you are trying to protect, validate or recover.
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