MacHa Padmini

About MacHa Padmini

I’m Padmini Macha — a results-driven Cyber Security Engineer with 8+ years of experience…

Experience

1. Cyber Security Engineer

   Exabeam

   Jan 2023 — Present · Foster City, CA, US

   Conducted threat and vulnerability assessments using Tenable Nessus, AppDetective, and Web Inspect.• Conducted proactive threat hunting across endpoint, cloud, and network telemetry, mapping detections to the MITRE ATT & CK framework to identify tactics such as persistence, privilege escalation, and lateral movement.• Configured, audited, and tuned SonicWall, Cisco ASA, and Juniper firewalls to enforce access policies, detect anomalies, and strengthen perimeter defenses.• Leveraged EDR/XDR platforms (CrowdStrike, Cortex) with MITRE ATT & CK mapping for behavioral analytics to detect advanced persistent threats (APTs).• Partnered with DevOps to embed SAST/DAST tools in CI/CD pipelines; ensured alignment with IAM-based access controls.• Deployed AWS IAM, GuardDuty, CloudTrail, Security Hub, KMS and Azure Sentinel, Defender for Cloud, Key Vault, Conditional Access; secured hybrid workloads against compliance gaps.• Integrated SOAR with QRadar for automated phishing and malware triage.• Developed and delivered security awareness programs covering phishing, password hygiene, and cloud security best practices, improving overall employee security posture.• Built and tuned SIEM correlation rules in QRadar/Splunk aligned with MITRE ATT & CK TTPs, reducing false positives and improving SOC efficiency.• Implemented Kubernetes/OpenShift container security with runtime monitoring and image scanning• Optimized QRadar SIEM with custom PowerShell automation for log correlation; decreased false positives and improved MTTR.• Designed Zero Trust segmentation with Cisco Firepower, preventing lateral movement and strengthening network security.• Deployed AWS IAM, GuardDuty, CloudTrail, KMS and Azure Sentinel, Key Vault; secured hybrid cloud workloads.• Coordinated ISO 27001 audit readiness across AWS, Azure, and on-prem environments, achieved zero major non-conformities.

Education

• University of New Haven

  Master's degree, Computer Science

• St. Anns Degree College for Women (Mallapur)

  Bachelor in information technology, Information Technology