About

About

Welcome

I am Walter, a recent IT graduate with a strong foundation in networking, systems administration, web development, cloud computing, and a growing focus on cybersecurity. I am documenting my learning journey for everyone to see. This is my portfolio for my projects, feel free to follow along.

Resume

Skills

Operating Systems: Windows 10/11, Windows Server 2022/2025, Linux (Ubuntu 22.04/24.04 LTS)

Cloud & Infrastructure: Azure (Sentinel, VNets, NSGs, IAM, Logic Apps), GCP (VPC, Compute Engine, IAM, BigQuery), Active Directory (Users, GPO, RBAC, Domain Services), Virtualization (VirtualBox, Type 2 Hypervisors), RabbitMQ (AMQP Messaging)

Security Engineering & Monitoring: SIEM (Wazuh, Microsoft Sentinel), SOAR (Shuffle), Endpoint Telemetry (Sysmon), Vulnerability Management (OpenVAS, Nmap), Network Monitoring (Wireshark, Nagios), Firewalls (OPNsense)

Scripting & Automation: Python, PowerShell, Bash, KQL, SQL

Projects

Cybersecurity & Systems Administration Home Lab

  • Designed segmented lab network using OPNsense to simulate corporate, server, and administrative environments

  • Deployed and managed Active Directory domain with users, RBAC, file shares, and GPOs to emulate enterprise identity management

  • Configured Sysmon via GPO and centralized logs in Wazuh SIEM for Windows telemetry monitoring

  • Simulated red team exercises, such as malware delivery and data exfiltration

  • Simulated blue team exercises, such as detection engineering and creating automated response scripts

  • Developed and tuned custom Wazuh detection rules to identify credential dumping activity, reverse shells, and malicious PowerShell executions

SOC Automation Project

  • Built custom Wazuh detection rules and Active Response to automatically isolate compromised endpoints

  • Developed Shuffle SOAR workflows for alert enrichment, orchestration, and automated containment

  • Integrated VirusTotal API for IOC enrichment and threat intelligence automation

  • Connected alerts to TheHive for structured case management and triage

  • Automated high-severity alert notifications to reduce response time

Systems Integration Project - Backend Developer

  • Designed messaging architecture using RabbitMQ (exchanges, queues, consumers) for reliable inter-service communication

  • Built secure authentication workflows with API validation and session management

  • Developed push notification services to support real-time user updates

  • Implemented centralized logging for distributed services to improve observability

  • Integrated Nagios and OpenVAS for infrastructure monitoring and vulnerability scanning

Cloud Administration Projects

  • Designed and deployed secure cloud environments in Azure and GCP simulating business applications

  • Configured networking and access controls (VNet/VPC, NSGs, IAM, firewalls, private endpoints)

  • Applied CIS Benchmark hardening standards across cloud resources

  • Deployed and managed cloud services including:

    • Azure: VNets, NSGs, Private DNS, IAM, Firewall Rules

    • GCP: VPC, Compute Engine, Cloud Storage, Autoscaling, BigQuery

Azure SOC Project

  • Deployed intentionally exposed Windows VM to simulate external attack surface and generate real-world telemetry

  • Configured Microsoft Sentinel for log ingestion, analytics, and alerting

  • Built custom Sentinel workbook to visualize attacker IP geolocation and brute-force patterns

  • Developed and automated RDP blocking playbook using Azure Logic Apps to reduce brute-force noise

  • Created and tuned detection rule for persistence via scheduled tasks

Certifications

CompTIA Security+

Contact Me