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Taj Seabrook

@tajseabrook

Cyber Security Engineer at LPL Financial securing cloud, identity, and email systems across enterprise environments.

United States
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At LPL Financial, I lead enterprise security engineering initiatives across email security, identity security, insider threat, and access management for environments supporting 15,000+ users and endpoints.

I configured Wiz for continuous cloud and on-prem asset monitoring, using Wiz Red to assess the attack surface and integrating Cloudflare DNS, AWS Route 53, and Amazon Bedrock logs. I also established SCIM provisioning, developer access controls, and secure API service accounts.

I engineer and manage Microsoft Defender for Office 365, Proofpoint Secure Email Gateway, and Proofpoint Insider Threat Management. My work also includes SSO integrations, access reviews, DKIM, DMARC, SPF, and RBAC governance.

Previously at LPL Financial, I monitored Prisma Cloud alerts and deployed CSPM capabilities across AWS and Azure. At Nexcom, I provided Tier 1 and Tier 2 support and administered mobile device management and Active Directory for users.

Experience

Work history, roles, and key accomplishments

LPL Financial logoLF
Current

Cyber Security Engineer

Dec 2024 - Present (1 year 10 months)

Lead enterprise security engineering initiatives across environments supporting 15,000+ users and endpoints, driving configuration, testing, and deployment of security technologies. Proficient in executive-level reporting, version control matrices, and operational workflows.

LPL Financial logoLF

Information Security Analyst

Jan 2023 - Dec 2024 (1 year 11 months)

Monitored and analyzed Prisma Cloud alerts to investigate and respond to security incidents, and designed, deployed, and configured CSPM capabilities for continuous security monitoring across multi-cloud environments. Developed and managed CyberArk digital safes and led training for engineers on RBAC server access.

Education

Degrees, certifications, and relevant coursework

Purdue University Global logoPG

Purdue University Global

Bachelor of Science, Cybersecurity

Pursuing a Bachelor of Science in Cybersecurity at Purdue University Global.

Microsoft logoMI

Microsoft

AZ-900: Microsoft Azure Fundamentals, Cloud Computing

Earned the AZ-900: Microsoft Azure Fundamentals certification.

Proofpoint logoPR

Proofpoint

Proofpoint Certified AI Agent Security Specialist, AI Security

Earned the Proofpoint Certified AI Agent Security Specialist certification.

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