Dhivakar Radhakrishnan
Summary
Experienced in cybersecurity fundamentals, adept at identifying and mitigating security risks through diligent monitoring and analysis. Eager to further develop skills in network defense and threat analysis in a Security Analyst role.
Overview
4
4
years of professional experience
1
1
Certification
Work History
Security Analyst L1
07.2024 - Current
- Triaged 50+ security alerts daily in a 24x7 SOC environment using Splunk, addressing threats such as phishing, brute-force attacks, and unauthorized access.
- Performed advanced log correlation across firewalls, IDS/IPS, VPN, and endpoints to reduce false positives and enhance detection accuracy.
- Investigated malware and Indicators of Compromise (IOCs) using Microsoft Defender for Endpoint to validate and contain threats.
- Supported SIEM rule tuning and detection logic improvements to strengthen threat identification capabilities.
- Conducted regular vulnerability assessments using Nessus and Qualys; assisted with patch validation and remediation follow-up.
- Documented incident investigations in JIRA, ensuring SLA compliance and maintaining clear audit trails.
- Contributed to seamless shift handovers by maintaining detailed incident logs and fostering response continuity.
- Analyzed security incidents to uncover root causes, identify vulnerabilities, and recommend remediation strategies.
- Monitored network traffic for anomalies, contributing to proactive threat detection and improved security posture.
Security Analyst
Tata Consultancy Services
02.2021 - 08.2022
- Conducted vulnerability assessments to identify security gaps and recommend remediation strategies.
- Developed and maintained incident response plans to ensure effective handling of security breaches.
- Monitored network traffic for suspicious activities using advanced security tools and techniques.
Education
Graduate Certificate - Cloud Computing
Durham College
Oshawa, ON04.2024
Graduate Certificate - Cybersecurity
Durham College
Oshawa, ON04.2023
Bachelor Of Technology - Computer Science
SRM Institute of Science and Technology
05.2020
Skills
Security Tools & Platforms:
Splunk, Microsoft Defender for Endpoint, ELK Stack, Fortinet, Snort, Wazuh, Sysmon, Windows Event Logs, JIRA, TheHive, CrowdStrike, Wireshark, Nessus, Qualys, Nmap, Burp Suite, Metasploit
Security Frameworks & Standards:
MITRE ATT&CK, NIST Cybersecurity Framework, ISO/IEC 27001
Technical Proficiencies:
SIEM Operations, Log Analysis & Correlation, Alert Triage, Threat Detection & Hunting, Endpoint Protection, Incident Response, IAM, Active Directory Security, Penetration Testing, Vulnerability Management
Networking & Infrastructure:
TCP/IP, DNS, DHCP, VPNs, Firewall Configuration, IDS/IPS Technologies
Programming & Automation:
Python, JavaScript (for scripting and security automation)
Professional Attributes:
Strong Team Collaboration, Effective Communication, Adaptability in Dynamic Environments, Time Management, Analytical Thinking, Continuous Learning & Growth Mindset
Certification
- CompTIA Security+
- AWS Certified Cloud Practitioner (AWS CLF C02)
- Fortinet Network Security Expert 1 | Network Security Expert 2
- Splunk Core Certified User
- Certified Network Security Specialist – ICSI
- CompTIA CySA+ – In Progress
Timeline
Security Analyst L1
07.2024 - Current
Security Analyst
Tata Consultancy Services
02.2021 - 08.2022
Graduate Certificate - Cybersecurity
Durham College
Bachelor Of Technology - Computer Science
SRM Institute of Science and Technology
Graduate Certificate - Cloud Computing
Durham College
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