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Hi there, I'm Rey.
I can think, analyze, strategize, plan, execute and learn!

Security Monitoring & Detection

Deploy tools to detect and respond to security events in real time.

Identity and Access Management

Securing IAM environments with best practices and access controls.

Profile

Mobile & Endpoint Management

Manage device security and enforce compliance policies.

Clinical & Operational Security

Providing targeted security support for clinical, research, environments.

About me

I’m a cybersecurity professional with 6+ years of IT experience and a strong Professional and academic background in computer science and cybersecurity. I hold various certifications such as: Certified Information Security Manager® (CISM), CompTIA CySA+, Pentest+, Networking, Cloud Implementation, and ISC2 Certified in cybersecurity (CC).

As you explore this site, you’ll find highlights of my projects, education, and blog, offering a closer look at my work, interests, and ongoing contributions to the cybersecurity space.

I’m passionate about contributing to a more secure digital future and enjoy solving complex challenges that make a measurable impact. I'm always open to connecting with others in the cybersecurity community and exploring meaningful work in this space.

Here are some tools, technologies and frameworks I have been working with:

PowerShell, Bash
Wireshark, Netcat, Wazuh
Microsoft Defender, Rapid 7
Kali Linux, Log Analysis
Cyber Threat Intelligence (CTI)
Azure Policy, Azure Monitor
VMware
Intune
Mobile Device Management
Active Directory
Network Segmentation
Zscaler
NIST
ISO 27001
SOC 2, PCI DSS
C++, Python, GO
Cloud Security Implementation
Identity Access Management (IAM)

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Background

Information Technology Analyst @ Mayo Clinic

NOV 2022 - PRESENT

  • ▹Supported migration of over 30,000+ clinical and corporate devices from Hub Workspace to Intune Company Portal, a modernization effort contributing to about $1M in licensing costs savings.
  • ▹Secured endpoint access for 20,000+ clinicians, consultants, and staff by deploying Zscaler zero trust architecture and F5 Access, ensuring HIPAA-compliant connectivity to electronic health records (EHR) and other critical healthcare applications.
  • ▹Managed about 85,000+ Azure AD profiles with privileged IAM rights, enforcing and managing Multifactor authentication and recovery across the enterprise
  • ▹Provided white-glove support for 500+ hospital executives, physicians, and consultants, maintaining a high satisfaction rating while ensuring secure access across endpoints.
  • ▹Configured security work profiles and deployed 90+ clinical/business applications to mobile devices and workstations, safeguarding daily access to sensitive patient data and reducing compliance risks.

IT Business Analyst @ Mayo Clinic

NOV 2022 - JUN 2023

  • ▹Supported Security Engineers, Analysts, and Biomedical Technicians in improving vulnerability identification and remediation of medical devices.
  • ▹Monitored and analyzed network traffic between printers, scanners, and workstations using the TCP/IP protocols to ensure seamless connectivity during network security activations.
  • ▹Provided onsite support during network segmentation activations to ensure smooth implementation of the assigned work unit segmentation tags.

Side projects

Whenever I get time, I build side projects. Here you can navigate to different websites, apps, and tools I built.

Secure Network Design

Secure Network Design Post-Merger

▹ PCI DSS ▹ SOX ▹ Access Control ▹ IAM

Azure Cloud Architecture Implementation

Hardening an Azure Environment for Compliance

▹ Azure ▹ NIST SP 800-53 ▹ Centralized Backup ▹ RBAC

MD5 vs SHA-256 password hashing

MD5 vs SHA-256 password hashing

▹ MD5 ▹ SHA-256 ▹ Password cracking ▹ bcrypt

Cybersecurity Governance

Security Governance and resilience plan

▹ NIST ▹ Network Segmentation ▹ GRC