88%
Reduction in failed SSH authentication noise after hardening.
Security Case Study
NullID
Secure collaboration baseline for Linux-first infrastructure, designed around least privilege, strong host controls, and auditable operational workflows.
Impact Metrics
4x
Faster suspicious-session triage with centralized audit trails.
100%
Privileged access moved to role-based least-privilege profiles.
Problem
Authentication and secure collaboration were fragmented across tools, which increased incident noise and made for weak audit trails during investigations.
My Role
I designed the security baseline, implemented host hardening controls, and wrote the deployment + operations runbook for repeatable execution.
Stack
- Linux
- Nginx
- Bash
- Systemd
- Fail2ban
Architecture
- Hardened Linux host with strict SSH and service boundaries.
- Reverse-proxy ingress with controlled upstream exposure.
- Audit-aware logging and alerting path for suspicious events.
Outcome
The delivered baseline made security controls visible and operationally practical, lowering authentication noise while making incident triage faster and more predictable.
Reference Excerpt
"Kamran delivered controls we could actually maintain. The hardening plan was clear, the
rollout was smooth, and incident triage became noticeably faster."
Infrastructure Lead (name withheld by request)
Production Monitoring
Public uptime monitoring runs every 30 minutes with automatic failure alerts and recovery closure.