AI-curated hardening baselines for Linux, Windows, and macOS that adapt to your environment — eliminating insecure defaults, pruning unnecessary services, and enforcing least privilege at the OS layer.
Every operating system ships with default settings optimised for usability — not security. Unnecessary services run, default credentials exist, audit logging is minimal, and file permissions are often too broad. This default state is exactly what attackers look for once they gain an initial foothold.
OS Hardening is the disciplined process of configuring your operating systems to the minimum necessary functionality — removing what isn't needed, locking down what is, and continuously monitoring for deviation from your approved baseline.
At Cyber Security Seva, we use our AI engine to generate environment-specific hardening baselines that balance security with the operational requirements of your workloads — so hardening doesn't break production.
Deep hardening expertise across all major enterprise operating systems and distributions.
RHEL, CentOS, Ubuntu, Debian, Amazon Linux, and SUSE — aligned to CIS Linux Benchmarks Level 1 & 2 with kernel parameter hardening, PAM configuration, and auditd setup.
Windows Server 2016/2019/2022 hardening against CIS Windows Benchmark and DISA STIG — covering GPO settings, user rights assignments, audit policies, and Windows Defender configuration.
Enterprise macOS hardening for fleet deployments — system preferences, FileVault, Gatekeeper, firewall configuration, and remote management settings aligned to CIS macOS Benchmark.
Comprehensive OS-level hardening across authentication, networking, filesystem, logging, and kernel configuration.
Password policies, account lockout thresholds, MFA enforcement, root/administrator access restriction, SSH key-only authentication, and PAM configuration hardening.
Kernel network parameter tuning — disabling IP forwarding, ICMP redirects, source routing, and enabling SYN cookies to protect against network-level attacks.
File permission review and remediation, SUID/SGID binary auditing, world-writable directory elimination, and filesystem mount option hardening (noexec, nosuid, nodev).
Comprehensive auditd (Linux) and Windows Event Auditing configuration — capturing authentication events, privilege escalation, file modifications, and system calls for forensic readiness.
Systematic disabling of unnecessary services, daemons, and listening ports — reducing the attack surface to only what is required for the system's operational role.
SELinux, AppArmor, and Windows Defender Credential Guard configuration — enforcing mandatory access controls that contain breaches even when application-layer defences are bypassed.
A structured process from baseline assessment through to hardened deployment and continuous compliance monitoring.
We assess the existing OS configuration against CIS Benchmarks and DISA STIGs — producing a gap report that quantifies your current hardening score and prioritises what needs to change.
Our AI engine generates a custom hardening baseline calibrated to your OS version, system role, and compliance requirements — avoiding over-hardening that breaks legitimate workloads.
We identify all missing OS and kernel patches, cross-reference them against active exploit databases, and produce a prioritised patching schedule focused on highest-risk gaps first.
Remediation scripts (Bash, PowerShell, Ansible playbooks) are delivered and tested in a staging environment first — ensuring hardening changes are validated before production rollout.
Controlled, phased production deployment of hardening changes. Post-deployment verification run confirms all controls are applied and systems remain fully operational.
AI-powered continuous compliance monitoring detects configuration drift — alerting your team whenever a system deviates from its hardened baseline due to updates, admin changes, or compromise.
Our AI generates hardening baselines specific to your OS version, system role, and business context — not generic one-size-fits-all configurations that require hours of manual adjustment.
We don't just tell you what to fix — we deliver tested Ansible playbooks, Bash scripts, and PowerShell configurations that your team can run directly in staging before production rollout.
All hardening changes are tested and phased — we never deploy to production without validation. Your systems stay available throughout the entire hardening process.
Hardening is not a one-time event. Our AI monitors for drift so every patch, admin change, or new deployment is automatically checked against your approved hardened baseline.
Talk to our hardening specialists today. Free initial scoping call — we respond within 4 hours.