Arun Dubey

Cyber Security Analyst who keeps escalations focused on genuine threats by triaging 200-300 Microsoft Sentinel (SIEM) and Defender (EDR) alerts weekly, strengthens Zero Trust posture through Active Directory administration, and delivers audit-ready reporting by applying NIST CSF and MITRE ATT&CK to every investigation, escalation and compliance activity.

Certified Ethical

Hacker (CEH), currently pursuing Microsoft SC-200 and CompTIA Security+, with a postgraduate degree in Business Analytics and Management including a strategic cybersecurity in business module, and scripting in Python and PowerShell.

Cyber Security Analyst - YMCA Norfolk - Norwich, United Kingdom

(2025-01)

Volunteer, shift-based. Originally a UEA-sponsored placement on YMCA's live infrastructure; continued voluntarily since.

• Kept escalations focused on genuine threats by triaging 200–300 SIEM/EDR alerts weekly and validating false positives.
• Closed a key access-control gap by driving MFA and YubiKey adoption through risk findings presented to leadership.
• Reduced shift‑handover time to 30-45 minutes by standardising case documentation, ensuring continuity.
• Ensured accurate escalation by reviewing automated conditional-access blocks on repeated failed sign-ins.
• Prevented rushed reviews on an ~80/20 triage split, prioritising unusual logins and device non-compliance.
• Strengthened Zero Trust posture by administering and securing access across 200 Active Directory accounts.
• Delivered audit-ready reporting by gathering evidence and documenting escalated findings per NIST CSF.

Cybercrime & Financial Fraud Support - Gurgaon Police - Haryana, India

(2021-06 - 2023-03)

Volunteer

• Traced digital evidence across offence types while investigating 90–100 cybercrime and financial-fraud cases.
• Resolved most cases through persistent, structured follow-up with complainants and investigating officers.
• Documented findings and investigation steps to support case development, decision-making and audit trails.
• Maintained secure handling of sensitive data in line with legal, regulatory and confidentiality requirements.
• Kept complainants and officers informed with clear updates, scaling engagement on complex cases.

Software Support Associate - Aithent Technologies - Gurgaon, India

(2019-11 - 2023-07)

• Resolved 30+ daily tickets for 90+ US public-sector sites, consistently meeting SLA targets.
• Caught issues pre-deployment through functional testing, defect reproduction and fix validation.
• Sustained SLA performance through peak volume with same-day resolution on most cases.
• Improved client experience across sites by resolving significant software performance issues at role start.
• Reduced repeat tickets by creating technical documentation that improved team knowledge transfer.

MSc - Business Analytics and Management - University of East Anglia (2024-09 - 2025-10)

Course - Ethical Hacking and Advanced Networking (Cybersecurity) - Craw Cyber Security (2021-03 - 2021-10)