Loading…
We find the vulnerabilities others miss before attackers do
Operator-led offensive security
Find and Break Identity‑Driven Attack Chains
We specialize in penetration testing and security assessments that expose how attackers move through Active Directory, Entra ID, AWS, Google Cloud, Okta, and hybrid environments. You get a prioritized list of attack chains and concrete remediation steps so you know exactly what to fix first.
Active DirectoryHybrid IdentityCloud Attack Paths
Our Approach
Why Choose Vilkas Cybersecurity?
We deliver real-world offensive security expertise that goes beyond checkbox compliance to actually strengthen your defenses.
What makes the work different
We focus on how weaknesses connect, how an attacker would move, and what to fix first.
The goal is not to generate a generic report. It is to help your team understand realistic risk and act on it quickly.
Deep Expertise
Decades of offensive security experience uncovering what others miss.
Tailored Testing
No checkbox reports, just real-world threat simulation and remediation.
Actionable Guidance
Clear, prioritized remediation steps you can act on immediately.
Client-Centric Focus
Reports, timelines, and communication tailored to your team's needs.
What We Offer
Featured Services
Hands-on offensive security assessments designed to identify real weaknesses, explain impact clearly, and help your team prioritize the right fixes.
Network Penetration Testing
In-depth assessments to identify and exploit weaknesses in your network perimeter and internal systems.
Learn MoreApplication Security
Manual testing of custom-built and third-party web, mobile applications, and APIs using industry best practices.
Learn MoreCloud Security
Comprehensive assessments for Azure, AWS, and Google Cloud environments, including identity and boundary review.
Learn MoreActive Directory Security Assessment
Identify hidden AD attack paths, legacy risks, privilege exposure, and configuration weaknesses with remediation guidance.
Learn MoreRed Team Assessment
Simulated real-world attacks that test detection, response, and resilience against realistic adversary behavior.
Learn MoreSecurity Control & Readiness Assessment
Evaluate controls against recognized frameworks and prioritize the gaps that matter most.
Learn MoreNeed something more tailored?
Explore the full services catalog or start the scoping questionnaire and we will recommend the right fit.
See What a Real Report Looks Like
Get a glimpse into the depth and clarity of our penetration test reporting. Download a realistic sample report and see the value for yourself.
Common questions
Quick answers about how we work. For compliance mapping, scoping with senior testers, partnerships, and more, see the full FAQ.
What does Vilkas Cybersecurity do?▾
We are an offensive security partner focused on penetration testing, red team exercises, and related assessments, with emphasis on manual analysis, clear reporting, and remediation you can act on. Start with our services overview, or see the full FAQ for more on how we work.
How do we get started?▾
Book a short introductory call, message us through contact, or use the scoping questionnaire when you are ready to line up scope. Book an introductory call, contact us, and the scoping questionnaire are all easy entry points. More detail lives on the FAQ.
Is post-remediation testing included?▾
Yes. Post-remediation validation is part of our methodology so you can confirm critical fixes and close the loop, not just receive a one-time report. See the FAQ for how engagements are structured end to end.
Will testing disrupt production or business operations?▾
We plan for coordinated windows, excluded fragile systems, and steady communication with your team. For more on noise, access, and safety practices, read the Services FAQ.
What types of assessments do you offer?▾
We offer network penetration testing, vulnerability assessment, application and API testing, cloud security, Active Directory assessments, red team, purple team, social engineering, and security control readiness reviews, often combined when programs need it. Browse all services or the FAQ service list for direct links to each page.
Proof In Practice
Recent Findings from Real-World Assessments
A sample of the types of issues we consistently identify during internal and Active Directory security assessments. None of these examples required custom exploits; rather, they abused common issues that plague AD environments across industries.
Unsigned LDAP allowed credential relay into domain privilege escalation▾
We consistently see environments where LDAP Signing and Channel Binding are not enforced. This allows attackers to relay captured credentials directly to domain controllers and modify objects or escalate privileges without needing valid passwords. In this case, we performed a single NTLM relay to the LDAP service on a domain controller to quickly compromise the domain without cracking a single password.
LLMNR/NBT-NS response spoofing to obtain a domain foothold▾
Even though this technique has been around for nearly 15 years, we can still perform these attacks in 2026 to obtain a domain foothold. This varies by environment, but typically involves either offline password hash cracking or NTLM relays to services such as SMB, LDAP, or MSSQL.
Misconfigured/overly permissive Active Directory Certificate Services (AD CS) templates▾
AD CS attacks are a recurring theme in the vast majority of our internal penetration tests that involve Active Directory. Whether from misconfigurations, misguided vendor documentation, or over-permissioning just so something "works", we run into attacks like ESC1, ESC4, and ESC8 on a weekly basis. We often see at least 2, sometimes 3, of these AD CS attacks in the same environment.
Domain Users group with excessive local administrator rights▾
Whether we start with credentials as an assumed breach engagement or gain a domain foothold through other means, we all too often see one or more domain computers where all domain users have local administrator rights. During a recent engagement, we uncovered nearly 10 hosts where our standard domain user account was a local admin. One machine had a Domain Admin logged in, and we used a custom tool to impersonate this account and compromise the domain.
Local administrator password re-use▾
After compromising a single host, our tester dumped local credentials, obtained the local administrator password hash, and found that it was reused on almost every machine in the same subnet. This allowed the tester to perform credential theft attacks against several high-value targets, eventually obtaining clear text credentials for a service account that could be used to further the attack chain, culminating in domain compromise.
These are the types of issues we validate and chain together during internal penetration tests and Active Directory security assessments, which often lurk in the shadows for years and are missed by vulnerability scanners or "checkbox" penetration tests.
Contact
Get in Touch
Ready to strengthen your defenses? Contact us for a free consultation and let's discuss how we can help secure your organization.