Mani Sri Kumar
Security Engineer
Mani Sri Kumar is a Security Engineer at QCecuring, focused on certificate lifecycle management, PKI automation, and enterprise security infrastructure.
20 articles published
Certificate Lifecycle Management
How Many Internal Certificates Does Your Company Actually Have?Most teams think they manage hundreds of internal certificates. The real number is usually 3-5x higher. That gap is where risk hides.
17 Jul, 2026 · 03 Mins read
Certificate Lifecycle Management
The Certificate Nobody Knew Existed (Until It Broke Production)A forgotten certificate on a load balancer — imported by a contractor 2 years ago — expires at midnight. Three services go down. Nobody knows why for 6 hours.
17 Jul, 2026 · 03 Mins read
Certificate Lifecycle Management
Certificate Issued ≠ Certificate Deployed: The Gap Nobody TracksWhy a certificate issued by your CA doesn't mean it's deployed in production. The dangerous gap between issuance and deployment in AD CS environments.
17 Jul, 2026 · 04 Mins read
Certificate Lifecycle Management
Why 'We'll Know When It Breaks' Is Not a Certificate StrategyReactive certificate management costs 10x more than proactive. Compare MTTD, MTTR, and total cost between firefighting and planned maintenance approaches.
17 Jul, 2026 · 05 Mins read
Certificate Lifecycle Management
The Real Cost of a Certificate Outage (It's Not Just Downtime)Certificate outages cost $22K per incident when you factor in engineer hours, lost productivity, helpdesk surge, and compliance findings. See the full cost breakdown.
17 Jul, 2026 · 04 Mins read
Certificate Lifecycle Management
5 Certificate Blindspots in Every ADCS EnvironmentFive certificate blindspots that exist in every AD CS environment: load balancer certs, offline machines, thumbprint hardcoding, cross-platform certs, and ownership gaps.
17 Jul, 2026 · 06 Mins read
Certificate Lifecycle Management
The Spreadsheet That's Supposed to Track Your CertificatesWhy certificate tracking spreadsheets always fail. No alerts, no auto-discovery, stale data, single point of failure. Learn why spreadsheets can't manage certificates at scale.
17 Jul, 2026 · 03 Mins read
Certificate Lifecycle Management
AD CS + CLM: Why You Need Both (Not Either/Or)AD CS issues certificates. CLM tracks them. They solve different problems. Here's why running AD CS without CLM is like running servers without monitoring.
17 Jul, 2026 · 04 Mins read
Certificate Lifecycle Management
How EAP-TLS Works (And Why Cert Expiry Kills WiFi Access)Enterprise WiFi authentication via EAP-TLS depends on machine certificates. When they expire, employees walk in Monday morning and cannot connect.
17 Jul, 2026 · 03 Mins read
Certificate Lifecycle Management
47-Day Certificates Are Coming — Is Your Team Ready?Google and Apple are pushing 47-day certificate lifespans. Manual processes will catastrophically fail. Here's what you need to automate now.
17 Jul, 2026 · 03 Mins read
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