Vyshnav Thottathil

About Vyshnav Thottathil

I am a Cybersecurity & Network Engineer with 4 years of experience specializing in PKI, cryptography, Zero Trust, and enterprise network security. I have expertise in certificate lifecycle management, network segmentation, and vulnerability management, with hands-on experience in Keyfactor, Guardicore, Splunk, Wireshark, Cisco, Check Point, and Palo Alto. Skilled in SSL/TLS, VPNs, ACLs, and cloud security across Azure and GCP, I have a proven track record in securing infrastructures, ensuring compliance, and mitigating cyber risks.

Experience

1. Pki

   Tata Consultancy Services

   Feb 2022 — Present · IN

   Managed certificate lifecycle using CertHub, overseeing issuance, onboarding, renewal, and revocation across UAT, DEV, PROD, and DR environments.• Designed and maintained secure cryptographic key management systems, ensuring compliance with enterprise policies.• Automated certificate onboarding and renewal using Bash, Python, and PowerShell, reducing manual effort by 30%.• Conducted threat analysis, incident response, and vulnerability assessments, mitigating risks and ensuring security compliance.• Reduced downtime by troubleshooting certificate/keytool errors on Linux and Windows servers using Splunk and OpenSSL.• Implemented SSL/TLS and PGP protocols to secure enterprise communications.• Enforced Linux access control policies and ACLs, reducing unauthorized access attempts.

Education

• EK Nayanar Model Polytechnic College ,Kalliassery

  Diploma of Education, Telecommunications Technology

• APJ Abdul Kalam Technological University

  Bachelor of Technology - BTech, Electronics and Communications Engineering