Email Security SME

2 days ago

New Delhi, India Silicon Comnet Pvt Ltd Full time

Role: Email Security SME (Microsoft Defender for O365) Company: Silicon Comnet Pvt. Ltd. Location: Noida, India Mode: Work from office Notice: Immediate to 15 days Max.JD: Lead the investigation of high and critical severity email security incidents flagged by Microsoft Defender for Office 365 (MDO). Correlate alerts across Defender XDR (including Defender for Endpoint, Identity, and Cloud Apps) to build a complete incident storyline. Use automated investigation and response (AIR) playbooks to identify impacted entities and take containment actions such as: - Soft-deleting malicious emails. - Removing suspicious inbox rules. - Blocking sender domains or URLs Perform forensic analysis of phishing, spoofing, and business email compromise (BEC) attacks. Document root cause analysis (RCA) and lessons learned for each incident Identify gaps in detection logic and recommend improvements to SIEM and SOAR teams. Support in Providing recommendation for fine-tuning MDO policies such as anti-phishing, anti-spam, and safe links/safe attachments. Collaborate with Microsoft Premier Support for platform-level bugs or advanced troubleshooting Engage with the Microsoft DART team when sanctioned by the customer for deep-dive investigations Update incident status in ServiceNow tool and ensure timely communication with stakeholders Participate in CSIRT bridges and coordinate with customer Cyber Defense teams and Rapid Response Teams (RRTs) Contribute to weekly/monthly dashboards and SLA/KPI reporting Implement learnings from past incidents to prevent recurrence Participate in quarterly tuning sessions and transformation workshopsEmail - kirti.rustagi@siliconcomnet.com

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