# Portfolio Projects ## Public Notice This portfolio is a public document and includes no sensitive or classified information. All the contents are suitable for general audiences and comply with confidentiality agreements. ## Overview of Public Projects 1. [Enterprise Network Security Audit](#project-1-enterprise-network-security-audit) 2. [Small Business Security Assessment & Enhancement](#project-2-small-business-security-assessment--enhancement) 3. [Secure Satellite Communication Protocol Design](#project-3-secure-satellite-communication-protocol-design) 4. [UAV Cybersecurity Framework Implementation](#project-4-uav-cybersecurity-framework-implementation) 5. [AI-Driven Network Anomaly Detection](#project-5-ai-driven-network-anomaly-detection) 6. [Secure SDR Implementation for Amateur Ground Stations](#project-6-secure-sdr-implementation-for-amateur-ground-stations) 7. [Lunar Analog Habitat Cybersecurity Architecture](#project-7-lunar-analog-habitat-cybersecurity-architecture) 8. [Family Office Cybersecurity Framework](#project-8-family-office-cybersecurity-framework) --- ## Project 1: Enterprise Network Security Audit ### Overview Conducted a comprehensive security audit for a large corporation, evaluating network architecture, firewall configurations, intrusion detection/prevention systems (IDS/IPS), and overall vulnerability management posture. ### Objectives - Analyzed network topology, segmentation, and data flow patterns for security risks. - Performed vulnerability scanning and configuration reviews of key network infrastructure. - Assessed firewall rule effectiveness and IDS/IPS signature relevance. - Recommended prioritized remediation actions and strategic security enhancements. - Evaluated system hardening practices, including Linux file permissions and database access controls. ### Tools & Technologies - Network Vulnerability Scanner (Nessus) - Packet Analyzer (Wireshark) - Firewall Platforms (Cisco ASA, Juniper SRX) - Linux/*nix command-line utilities - SQL database query tools (for configuration review) ### Outcome - Identified numerous critical and high-severity vulnerabilities, providing detailed remediation guidance. - Delivered actionable insights leading to measurable improvements in the organization's network security posture. - Enhanced alignment with compliance requirements such as GDPR and HIPAA through targeted recommendations. --- ## Project 2: Small Business Security Assessment & Enhancement ### Overview Executed a comprehensive security assessment and implemented foundational security improvements for a small business, focusing on identifying critical vulnerabilities and establishing robust defensive measures. ### Objectives - Conducted external and internal penetration testing to identify exploitable vulnerabilities. - Analyzed existing network design, security policies, and access control mechanisms. - Developed and implemented baseline security configurations for workstations and servers. - Established incident response guidelines and provided staff awareness training. ### Tools & Technologies - Penetration Testing Frameworks (Metasploit, Burp Suite) - Network Firewalls (pfSense implementation) - Intrusion Detection System (Snort configuration) - Incident Response Ticketing System (setup and configuration) ### Outcome - Significantly strengthened defenses against common cyber threats like phishing and ransomware. - Reduced the potential attack surface through network segmentation and system hardening. - Improved the company's capability to detect and respond effectively to security incidents. - Fostered a more security-conscious culture within the organization. --- ## Project 3: Secure Satellite Communication Protocol Design ### Overview Led the design and analysis of secure communication protocols for satellite command, telemetry, and payload data transmission, emphasizing confidentiality, integrity, and authentication for space-to-Earth links. ### Objectives - Defined security requirements based on mission profile and threat modeling specific to space assets. - Designed cryptographic protocols incorporating AES-GCM and SHA-3, suitable for satellite operational constraints. - Implemented and validated secure data transmission mechanisms ensuring data integrity via authenticated encryption. - Analyzed protocol resilience against eavesdropping, replay attacks, and jamming scenarios. ### Tools & Technologies - Cryptographic Standards (AES-GCM, SHA-3, CCSDS Security Recommendations) - Protocol Simulation Environment (NS-3) - Secure Programming Libraries (OpenSSL) - Formal Verification Methods (preliminary analysis) ### Outcome - Developed robust protocol specifications enhancing confidentiality and integrity for critical satellite communications. - Validated protocol resilience against modeled space communication threats through simulation. - Contributed to establishing secure and reliable communication channels, increasing mission assurance. --- ## Project 4: UAV Cybersecurity Framework Implementation ### Overview Developed and implemented a security framework for Unmanned Aerial Vehicles (UAVs), protecting command and control (C2) links, onboard data, and resisting potential cyber-attacks like jamming or hijacking. ### Objectives - Secured the C2 link between UAVs and ground control stations using authenticated encryption (DTLS). - Implemented data-at-rest (LUKS) and data-in-transit (TLS) protection for collected sensor data. - Deployed lightweight intrusion detection agents tailored for UAV operational constraints. - Conducted penetration testing against the implemented framework using RF analysis tools. ### Tools & Technologies - Wireless Security Protocols (DTLS, WPA3-Enterprise) - Lightweight Cryptography Libraries (mbed TLS) - Embedded Linux Security Tools (iptables, auditd) - SDR Platforms (HackRF for RF testing) - Custom Intrusion Detection Agents ### Outcome - Deployed a security framework significantly reducing the risk of unauthorized C2 interference and data interception. - Ensured integrity and confidentiality of sensitive payload data during flight and post-processing. - Enhanced overall operational resilience and safety for UAV missions through validated security measures. --- ## Project 5: AI-Driven Network Anomaly Detection ### Overview Designed and implemented an AI-driven anomaly detection system leveraging machine learning to identify potentially malicious network activities that evade traditional signature-based detection methods. ### Objectives - Curated and pre-processed NetFlow data and firewall logs for model training. - Developed and trained Isolation Forest and Autoencoder models to establish baseline network behavior. - Integrated the trained models with the ELK Stack for real-time log analysis. - Implemented alerting mechanisms within Kibana for detected anomalies, prioritized by deviation scores. ### Tools & Technologies - Machine Learning Libraries (Scikit-learn, Keras) - Data Processing Tools (Pandas, Logstash) - Log Management & Analytics (ELK Stack: Elasticsearch, Logstash, Kibana) - Network Data Sources (NetFlow, Firewall Logs) ### Outcome - Developed a system capable of detecting novel network anomalies potentially indicative of zero-day threats. - Reduced mean-time-to-detect for specific classes of anomalous behavior compared to manual analysis. - Provided security analysts with prioritized, actionable alerts, improving response efficiency. - Enhanced proactive threat hunting capabilities by highlighting unusual network patterns. --- ## Project 6: Secure SDR Implementation for Amateur Ground Stations ### Overview Led a project focused on securing ground-based amateur antennas for space communication, using Software-Defined Radio (SDR) techniques to ensure the integrity and authenticity of space-to-ground transmissions from amateur satellites. ### Objectives - Implemented secure demodulation and decoding pipelines within GNU Radio. - Analyzed and mitigated risks associated with RF interference and spoofing targeting amateur SDR setups. - Developed methods using digital signatures (where feasible) for verifying received satellite transmissions. - Documented and shared secure SDR processing workflows with the amateur radio community. ### Tools & Technologies - SDR Software (GNU Radio Companion, GQRX) - SDR Hardware (RTL-SDR, USRP) - Signal Processing Libraries (GNU Radio DSP blocks, SciPy) - Authentication Techniques (GPG for signature verification) - RF Analysis Tools (Spectrum Analyzers) ### Outcome - Created secure SDR processing workflows enhancing data integrity for amateur satellite communications. - Increased ground station resilience against common RF spoofing and interference techniques. - Contributed practical security guidelines and reusable GNU Radio blocks to the open-source space community. --- ## Project 7: Lunar Analog Habitat Cybersecurity Architecture ### Overview Designed and implemented cybersecurity protocols for a Lunar Analog Habitat simulation, focusing on safeguarding critical life support, communication, and research systems in an isolated, high-latency environment. ### Objectives - Developed a Zero Trust security model adapted for the habitat's segmented network. - Implemented robust multi-factor authentication (MFA) and end-to-end encryption (TLS 1.3) for all internal and external communications. - Deployed intrusion detection (Zeek sensors) and continuous monitoring systems integrated with a central SIEM. - Secured critical environmental control systems using network isolation and protocol-aware monitoring. ### Tools & Technologies - Zero Trust Principles Implementation (Micro-segmentation via VLANs/Firewalls, Identity Management) - Strong Encryption Standards (TLS 1.3, AES-256) - Network Intrusion Detection System (Zeek) - SIEM Platform (ELK Stack) - Secure Remote Access (IPSec VPN) ### Outcome - Established robust protection for simulated critical habitat systems against potential cyber threats. - Demonstrated resilient secure communication capabilities despite simulated high-latency links. - Contributed a practical security architecture model applicable to future secure space exploration and habitation designs. --- ## Project 8: Family Office Cybersecurity Framework ### Overview Developed a tailored cybersecurity framework for a Family Office, addressing the unique financial, legal, and privacy concerns of high-net-worth individuals and families against targeted cyber threats. ### Objectives - Designed robust protection against sophisticated phishing, ransomware, and identity theft attempts. - Implemented secure communication channels (Signal, ProtonMail) and encrypted data storage (VeraCrypt). - Deployed advanced endpoint protection and secure network configurations for home and office environments. - Created and delivered personalized cybersecurity awareness training for family members and staff. ### Tools & Technologies - Secure Communication Platforms (Signal, ProtonMail) - Full Disk & File Encryption (VeraCrypt, BitLocker) - Advanced Endpoint Detection & Response (EDR) Solution - Enterprise-Grade Firewall/VPN Appliance - Password Managers & Hardware Security Keys (MFA) - Custom Phishing Simulation & Training Platform ### Outcome - Established comprehensive protection reducing exposure for sensitive information and financial assets. - Improved confidence in secure Family Office operations through implemented technical controls and training. - Delivered tailored solutions addressing the unique cybersecurity challenges and risk profile faced by high-net-worth families. --- For sensitive matters, inquiries, or professional collaborations, please reach out via email at [space.stranger698@8shield.net](mailto:space.stranger698@8shield.net). 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