Annapoorna K M K M

Cyber Security Analyst

Hinduja Global Solutions Pvt. Ltd

Feb 2023 - Feb 2025

Monitored and analyzed security alerts across Microsoft Sentinel, Seceon, and ArcSight SIEM platforms to identify potential security incidents and threats. Performed real-time security event monitoring and investigation across firewalls, IPS, network devices, Active Directory, and server environments. Analyzed security logs and event patterns to identify suspicious activities and determine whether events represented true positive incidents or false positives. Investigated security incidents, performed initial analysis, documented findings, and initiated appropriate escalation and mitigation procedures. Raised and managed security incident tickets through ServiceNow and TecX, ensuring timely follow-up and closure. Handled user-end security events and provided appropriate mitigation guidance and remediation actions based on the nature of the incident. Performed vulnerability assessments using Tenable Nessus, analyzed vulnerability scan reports, and followed up with respective teams for remediation of open and overdue vulnerabilities. Monitored potential threats and vulnerabilities and initiated escalation procedures in accordance with established security incident response processes. Correlated security events from multiple sources to support identification and investigation of potential attacks. Applied knowledge of MITRE ATT&CK, Cyber Kill Chain, network security concepts, and common attack techniques during security event analysis. Worked with security technologies including CrowdStrike, Microsoft Defender XDR, Cisco ASA, Fortinet FG-200G, Akamai WAF, and Proofpoint. Supported analysis of security events involving malware, phishing, brute-force attacks, DoS/DDoS, spoofing, MITM, SQL injection, and XSS. Prepared incident findings and security-related reports for tracking, escalation, and remediation activities.