REDUCE RISK.
IMPROVE COMPLIANCE.
PROTECT AGAINST CYBER THREATS.

Comprehensive, AI-aware cybersecurity that keeps your organization secure and lets you operate with confidence.

24×7×365

Forged in the highest-stakes networks.

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Karhu Cyber is a veteran-owned cybersecurity company. We protect organizations of every kind with a 24x7x365 Security Operations Center, penetration testing that finds the gaps before attackers do, and the compliance discipline we learned defending government and defense networks against real adversaries. Everything we do is security first.

Most organizations are asked to defend themselves against threats built by professionals, using tools and talent they were never meant to assemble alone. That is the gap we close.

We bring the people, the tooling, and the playbooks of a mature security program and put them to work for you on day one. Our analysts watch your environment around the clock. Our testers probe it before attackers can. Our advisors keep you ahead of the risk and compliance obligations that come with operating today. Everything we do is security first.

Why Karhu

Built for the regulated and the demanding

We learned this in the hardest environments there are. Our leadership has defended national-scale government networks against advanced persistent threats and brings that same operational standard to every client, whether you are a county government or a growing business.

A true partner, not a ticket queue

You get a team that knows your environment, answers when you call, and owns the outcome.

Compliance built in, not bolted on

Compliance is not a side service for us. It is core to how we protect the organizations that protect their communities and customers.

The whole capability, on day one

Every relevant module and license, enterprise-grade tooling, without the cost and complexity of assembling it in-house.

Who we serve

We protect organizations across the public and private sectors. County and municipal government. Defense and aerospace suppliers managing CUI. Healthcare. Education. Professional services and businesses that simply need their security handled right. If you operate where the stakes are high, the rules are strict, or the margin for error is thin, you are who we built Karhu for.

We serve organizations across the United States, with deep roots in Michigan.

Let’s talk about what you’re up against

A short conversation tells us where you stand and tells you whether we are the right fit. 

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Testimonials

Karhu Cyber tailored their attack vector techniques to be unique to our infrastructure which was extremely important and necessary to us to gain actual value out of the assessment. We had previous companies perform more generic ‘vulnerability assessments’, and to be direct, Karhu Cyber’s comprehensive approach blew them out of the water.
Operations Executive
Karhu Cyber’s detailed enumeration of their testing methodology and steps employed gave us a great deal of confidence in the results of their findings. For what they have found, the hand-written report breaking down the possible consequences of the findings was a rather refreshing change from penetration testers we’ve hired in the past.
VP of Engineering
“The experts at Karhu Cyber have helped to secure our County and our interests since April of 2022. Cybersecurity is a growing concern and need in today's business world. Having secure County Government operations and computer networks is a vital concern for us. The Karhu team has helped us with much more than cybersecurity, including designing a holistic plan for all of our Computer and Information Systems and operations. Knowing that we have Karhu on our team has given us peace of mind, and the services that they offer to our County are much appreciated. If your County Government is looking for a cybersecurity plan and partner, Karhu Cyber is strongly recommended.”
Ben L.Michigan County Administrator
"Working with Karhu Cyber has been an absolute pleasure. The entire Karhu team has provided our County Courthouse offices invaluable service as we establish and maintain our proactive cybersecurity program that will allow us the best levels of protection, safeguards and security for all private and public data. Their team of experts took the time to understand our unique needs as a local government entity and provided us with a customized solution that fit within our budget. This proactive approach to cybersecurity has helped us identify potential threats and vulnerabilities before they become major issues. They are always available to answer questions and provide guidance, and always keep us informed about the latest cybersecurity trends and best practices. Thanks to the efforts of Karhu Cyber, our local government offices now have a more secure and resilient network that can better withstand or avoid potential and costly cyber-attacks. I highly recommend Karhu Cyber to any government organization that may be looking for a trusted partner to help establish or improve their cybersecurity programs."
Michigan County Administrator
"The Karhu Cyber team is a group of consummate security professionals who deliver white glove customer service, deep network and security knowledge, and crucial cyber security risk management planning"
Brent H.Lead Scientist
“Karhu Cyber is a mission critical partner. Karhu takes a leadership and execution role to ensure data security at every level, while conducting research and providing expertise to ensure our enterprise is secure in a very challenging cyber environment.”
Jeff H.CEO
One of the most impressive aspects of Karhu Cyber's training is its impact on our staff. Without exception, everyone who participates in the training emerges with a significantly enhanced understanding of cybersecurity best practices and a heightened awareness of potential threats. The practical insights and hands-on examples shared by the instructors empower our employees to recognize and respond to security risks proactively, thereby bolstering our overall cybersecurity posture.
Michigan County Administrator
What sets Karhu Cyber apart is their adversarial approach to penetration testing. They don’t apply a one-size-fits-all methodology but instead take the time to understand our specific environment, threats, and security concerns before engaging. Their team goes beyond standard vulnerability scanning—they think and operate like real attackers, adapting their tactics to our infrastructure, applications, and business operations. For any organization serious about security, Karhu Cyber is a trusted partner that will challenge assumptions, expose weaknesses, and provide the clarity needed to strengthen defenses. I highly recommend them for penetration testing and any cybersecurity initiatives.
CEO
Our engagement with Karhu Cyber was overwhelmingly positive. Their professionalism, knowledge, and commitment were evident at every step. We look forward to continuing our work with Karhu to strengthen our network and support district-wide efforts.
Executive Director of Technology - K-12 School District
Service Portfolio

Next-Gen Protection

Threat Detection & Response

Prevent security incidents by monitoring, detecting, and responding to security threats within an organization's systems and networks.

Penetration Testing

Think like an attacker before one strikes. We simulate real-world attacks to uncover exploitable weaknesses across your networks, applications, and people.

Virtual CISO

vCISO`s have a broad range of cybersecurity expertise to help your organization develop, implement, and manage its cybersecurity strategy.

Vulnerability Management

Reduce your attack surface and ensure business continuity by identifying vulnerabilities and security weaknesses before the adversary.

Security Training

Ensure your team is a human firewall ready to prevent the next ransomware attack from affecting your customers and bottom line.

Compliance

CMMC
NIST 800-171
DFARS
ITAR

Security Engineering

Take a holistic approach to your environment and construct a secure architecture that aligns with your long term business goals.

Incident Response

Respond fast when it matters most. Our team contains, investigates, and remediates active threats to get your business back to normal operations quickly.

AI Threat Readiness Assessment

AI is reshaping the threat landscape. We assess your exposure to AI-driven attacks and evaluate how securely your team adopts AI tools, so you stay ahead of emerging risks.