TENY ANTONY
Kochi
Summary
Dedicated cybersecurity professional with 3 years of experience at Tata Consultancy Services, focusing on incident investigation and response. Expertise in security tools including IBM QRadar, Palo Alto Cortex, and CrowdStrike Falcon, with a strong background in phishing and malware analysis. Former Network Security Engineer with practical knowledge of Zscaler and zero trust architecture. Proven track record of improving SOC operations through automation, achieving a 30% reduction in MTTR, and certified in CompTIA Security+, CCNA, and AWS Security – Specialty.
Overview
1
1
Certification
1
1
year of professional experience
Work History
SOC Analyst
Tata Consultancy Services
Mumbai
09.2023 - 03.2025
- Monitored and triaged 100+ daily security alerts in IBM QRadar SIEM across a 5,000+ endpoint enterprise environment, consistently meeting sub-SLA escalation targets in a 24/7 SOC operations environment.
- Investigated and responded to 200+ P1/P2 security incidents monthly, leveraging CrowdStrike Falcon EDR, Cortex XDR, IDS/IPS telemetry, network traffic, and security logs to determine root cause, assess blast radius, and drive appropriate containment and remediation actions; maintained an average 31-minute case closure time.
- Tuned IBM QRadar correlation rules, reducing false positives by 40% and improving alert quality; also supported L1 analysts through technical guidance and quality reviews to maintain consistent and audit-ready SOC operations.
- Designed and deployed 8 Cortex XSOAR playbooks using visual automation and Python-based custom scripts for phishing triage, IOC enrichment, and endpoint isolation, reducing MTTR from 45 to 31 minutes and improving analyst efficiency.
- Conducted phishing and malware investigations by analysing email headers, malicious URLs, weaponized attachments, suspicious files, and endpoint telemetry; identified and managed IOCs, attack vectors, and threat actor TTPs, coordinating containment, remediation, and blocking actions with relevant security teams.
- Performed proactive threat hunting using MITRE ATT&CK and Cyber Kill Chain frameworks, supported by AI-assisted analysis, prompt engineering, and OSINT-based threat intelligence for IOC enrichment and prioritization.
- Analysed and correlated security events across QRadar, Cortex XSIAM, Google SecOps (Chronicle), CrowdStrike Falcon, and network security telemetry to identify suspicious activity and support incident investigation and response.
- Recognized with the TCS Gems On the Spot Award (2024) for resolving critical P1 security incidents under pressure and demonstrating strong incident-handling capabilities.
Network Security Engineer - Zscaler
Tata Consultancy Services
Mumbai
03.2025 - 03.2025
- Administered Zscaler ZIA, ZPA, and ZDX for enterprise security and connectivity, managing security policies, user/branch onboarding, Zero Trust access controls, and traffic troubleshooting.
- Implemented ZIA traffic forwarding using GRE, IPSec, Z-Tunnel 1.0/2.0, and PAC files, optimizing secure traffic steering through Zscaler cloud data centers.
- Managed ZIA security controls including URL Filtering, Cloud App Control, Firewall, DNS Control, TLS/SSL Inspection, Advanced Threat Protection, Malware Protection, DLP, and CASB to enforce secure internet access and protect against web-based threats and data exfiltration.
- Designed and managed ZPA application segments, server groups, App Connectors, and least-privilege access policies, implementing application-level access and micro-segmentation aligned with Zero Trust principles.
- Led the migration of 1,000+ intranet applications from Cisco VPN and Palo Alto VPN to Zscaler ZPA, enabling secure Zero Trust access for 800+ users while reducing broad network-level exposure and attack surface.
- Managed SCIM-based provisioning and Azure AD/Okta integrations for automated user and group synchronization, and configured SIPA/ENAT for clientless and agentless access scenarios.
- Investigated security and connectivity issues using Nanolog Streaming Service, Admin Audit Logs, and PCAP analysis, validating policy behavior and troubleshooting network traffic flows.
Skills
- Security operations and incident response
- Threat and malware analysis
- Problem solving
- Time management
- SIEM, EDR, and XDR
- Security automation and AI
- Security frameworks and cloud solutions
- Networking and systems administration
- Zscaler and zero trust architecture
Certification
- CompTIA Security +
- CCNA
- AWS Certified Security – Specialty
Languages
- Malayalam, Native
- English, C1 Advanced (Professional Proficiency)
- Hindi, B2 (Upper-Intermediate)
Accomplishments
- Attended the Zscaler Zenith events in 2024 and 2025, gaining exposure to industry trends and networking with experts.
- Consistently maintained high client satisfaction scores through proactive incident resolution and effective cross-team collaboration.
Timeline
Network Security Engineer - Zscaler
Tata Consultancy Services
03.2025 - 03.2025
SOC Analyst
Tata Consultancy Services
09.2023 - 03.2025