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    ║                                                                      ║
    ║   ███╗   ██╗███████╗████████╗███████╗███████╗ ██████╗              ║
    ║   ████╗  ██║██╔════╝╚══██╔══╝██╔════╝██╔════╝██╔════╝              ║
    ║   ██╔██╗ ██║█████╗     ██║   ███████╗█████╗  ██║                   ║
    ║   ██║╚██╗██║██╔══╝     ██║   ╚════██║██╔══╝  ██║                   ║
    ║   ██║ ╚████║███████╗   ██║   ███████║███████╗╚██████╗              ║
    ║   ╚═╝  ╚═══╝╚══════╝   ╚═╝   ╚══════╝╚══════╝ ╚═════╝              ║
    ║                                                                      ║
    ║                     M U S T A F A   Y A K I N                        ║
    ║                                                                      ║
    ║   ───────────────────────────────────────────────────────────────    ║
    ║                                                                      ║
    ║   [*] DevTools connection established                               ║
    ║   [*] Reconnaissance detected                                       ║
    ║   [*] Curiosity level ............. ACCEPTABLE                      ║
    ║   [*] Threat level ................ 0                               ║
    ║                                                                      ║
    ║   You're reading the source.                                         ║
    ║   So you're probably my kind of person.                              ║
    ║                                                                      ║
    ║   There is no security through obscurity here.                       ║
    ║                                                                      ║
    ║   If you're looking for vulnerabilities,                             ║
    ║   please be gentle with production. :)                               ║
    ║                                                                      ║
    ║   ───────────────────────────────────────────────────────────────    ║
    ║                                                                      ║
    ║   NETWORK  //  SECURITY  //  INFRASTRUCTURE                          ║
    ║                                                                      ║
    ║   HOST     : mustafayakin.com                                        ║
    ║   OPERATOR : Mustafa Yakin                                           ║
    ║   ROLE     : Network & Security Engineer                             ║
    ║   SESSION  : ENCRYPTED                                               ║
    ║   STATUS   : ONLINE                                                  ║
    ║                                                                      ║
    ║   root@mustafayakin:~# _                                             ║
    ║                                                                      ║
    ╚══════════════════════════════════════════════════════════════════════╝
-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Mustafa Yakın - Network & Security Engineer</title>

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      .contact-box {
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        flex-direction: column;
      }

      .contact-links {
        width: 100%;
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      }

      h1 {
        font-size: 3.5rem;
      }

      .hero {
        padding-top: 100px;
      }

      section {
        padding: 80px 0;
      }

      .project {
        padding: 24px;
        grid-template-columns: 1fr;
      }

      .project-num {
        margin-bottom: -10px;
      }

      .exp-item {
        padding: 24px;
      }

      .contact-box {
        padding: 30px;
      }
    }
  </style>
</head>

<body>

  <nav class="nav">
    <div class="container nav-inner">
      <a href="#" class="logo">mustafa.yakin<span>_</span></a>

      <div class="nav-links">
        <a href="#stack">Stack</a>
        <a href="#experience">Experience</a>
        <a href="#projects">Projects</a>
        <a href="#about">About</a>
        <a href="#contact">Contact</a>
        <a class="nav-btn" href="Mustafa_Yakin_CV.pdf" download>Resume ↗</a>
      </div>
    </div>
  </nav>

  <main>
    <section class="hero">
      <div class="container hero-grid">

        <div>
          <div class="eyebrow">
            <span class="dot"></span>
            NETWORK / SECURITY / INFRASTRUCTURE
          </div>

          <h1>
            Mustafa<br>
            <span class="outline">Yakın.</span>
          </h1>

          <p class="hero-sub">
            Network & Security Engineer focused on firewall management, network segmentation,
            access control and security monitoring with hands-on research in OT/ICS security.
          </p>

          <div class="hero-actions">
            <a href="#projects" class="btn btn-primary">
              View Selected Work →
            </a>

            <a href="#contact" class="btn">
              Contact Me
            </a>
          </div>

          <div class="hero-meta">
            <span>● ISTANBUL, TR</span>
            <span>SECURE CONNECTION</span>
            <span>STATUS: <span style="color:var(--accent-2)">ONLINE</span></span>
          </div>
        </div>

        <div class="terminal-card">
          <div class="terminal-top">
            <span></span><span></span><span></span>
          </div>

          <div class="terminal-body">
            <div><span class="cmd">mustafa@netsec:~$</span> whoami</div>
            <br>

            <div>Mustafa Yakın</div>
            <div class="muted">Network & Security Engineer</div>
            <br>

            <div><span class="cmd">mustafa@netsec:~$</span> cat focus.txt</div>
            <br>

            <div class="success">+ Firewall & Network Segmentation</div>
            <div class="success">+ Identity & Access (802.1X / RADIUS)</div>
            <div class="success">+ SIEM & Incident Response</div>
            <div class="success">+ OT/ICS Security Research</div>

            <br>

            <div><span class="cmd">mustafa@netsec:~$</span> connection-status</div>
            <div class="success">[ OK ] TLS session established</div>
            <div class="success">[ OK ] Identity verified</div>
            <div class="success">[ OK ] Portfolio loaded</div>

            <br>

            <span class="cmd">mustafa@netsec:~$</span>
            <span class="cursor"></span>
          </div>
        </div>

      </div>
    </section>

    <div class="ticker">
      <div class="ticker-track">
        <span>FORTIGATE</span>
        <span>PALO ALTO</span>
        <span>CISCO</span>
        <span>802.1X</span>
        <span>AAA/RADIUS</span>
        <span>SD-WAN</span>
        <span>WAZUH</span>
        <span>OPENVAS</span>
        <span>ZABBIX</span>
        <span>GRAFANA</span>
        <span>WIRESHARK</span>
        <span>OT/ICS</span>

        <span>FORTIGATE</span>
        <span>PALO ALTO</span>
        <span>CISCO</span>
        <span>802.1X</span>
        <span>AAA/RADIUS</span>
        <span>SD-WAN</span>
        <span>WAZUH</span>
        <span>OPENVAS</span>
        <span>ZABBIX</span>
        <span>GRAFANA</span>
        <span>WIRESHARK</span>
        <span>OT/ICS</span>
      </div>
    </div>

    <section id="stack">
      <div class="container">

        <div class="section-label">01 / technical stack</div>

        <h2 class="section-title">
          Security first. Infrastructure always visible.
        </h2>

        <p class="section-desc">
          Working across enterprise firewalls, identity systems, SIEM platforms,
          network monitoring, and industrial (OT/ICS) access control.
        </p>

        <div class="skills">

          <article class="skill-card">
            <span class="skill-index">01.01</span>
            <h3>Network & Security</h3>
            <p>
              FortiGate, FortiManager, Palo Alto, Cisco firewall policy management,
              network segmentation, VLAN, VPN, SD-WAN, wireless.
            </p>
          </article>

          <article class="skill-card">
            <span class="skill-index">01.02</span>
            <h3>Identity & Access</h3>
            <p>
              AAA/RADIUS, 802.1X, Active Directory, Windows Server, DHCP, NPS
              authentication and network access control.
            </p>
          </article>

          <article class="skill-card">
            <span class="skill-index">01.03</span>
            <h3>Vulnerability Management</h3>
            <p>
              OpenVAS-based vulnerability scanning, risk assessment
              and remediation follow-up.
            </p>
          </article>

          <article class="skill-card">
            <span class="skill-index">01.04</span>
            <h3>SIEM & Incident Response</h3>
            <p>
              Wazuh, Elasticsearch SIEM correlation, log analysis,
              alert investigation and incident response.
            </p>
          </article>

          <article class="skill-card">
            <span class="skill-index">01.05</span>
            <h3>Monitoring & Platforms</h3>
            <p>
              Zabbix, Grafana, Wireshark, VMware, Linux/Ubuntu
              infrastructure visibility and operations.
            </p>
          </article>

          <article class="skill-card">
            <span class="skill-index">01.06</span>
            <h3>OT/ICS Security</h3>
            <p>
              Industrial Control Systems, RBAC, network segmentation,
              secure access control, OpenPLC.
            </p>
          </article>

        </div>
      </div>
    </section>

    <section id="experience">
      <div class="container">

        <div class="section-label">02 / experience</div>

        <h2 class="section-title">
          Operating and securing enterprise networks in production.
        </h2>

        <div class="exp-list">

          <article class="exp-item">
            <div class="exp-head">
              <div>
                <div class="exp-role">Associate Network & Security Specialist</div>
                <div class="exp-org">Ak Gıda / Lactalis Türkiye</div>
              </div>
              <div class="exp-date">Oct 2025 — Present</div>
            </div>
            <ul class="exp-bullets">
              <li>Manage, monitor and secure enterprise network and security infrastructure.</li>
              <li>Administer firewall policy, network segmentation and access control on FortiGate, Palo Alto and Cisco.</li>
              <li>Operate and troubleshoot LAN/WAN, VLAN, VPN, SD-WAN, wireless and AAA/RADIUS infrastructure.</li>
              <li>Support commissioning and operations of network and security projects across the data center and multiple facilities.</li>
              <li>Analyze network and security incidents in coordination with local and international technical teams.</li>
            </ul>
          </article>

          <article class="exp-item">
            <div class="exp-head">
              <div>
                <div class="exp-role">Network & Security Intern</div>
                <div class="exp-org">Ak Gıda / Lactalis Türkiye</div>
              </div>
              <div class="exp-date">Feb 2025 — Oct 2025</div>
            </div>
            <ul class="exp-bullets">
              <li>Supported operations, monitoring and troubleshooting of network and security infrastructure.</li>
            </ul>
          </article>

          <article class="exp-item">
            <div class="exp-head">
              <div>
                <div class="exp-role">Information Technology Project Intern</div>
                <div class="exp-org">Ak Gıda / Lactalis Türkiye</div>
              </div>
              <div class="exp-date">Jul 2024 — Feb 2025</div>
            </div>
            <ul class="exp-bullets">
              <li>Contributed to IT infrastructure projects, system operations and end-user support processes.</li>
            </ul>
          </article>

        </div>
      </div>
    </section>

    <section id="projects">
      <div class="container">

        <div class="section-label">03 / selected work</div>

        <h2 class="section-title">
          Research built around real infrastructure.
        </h2>

        <div class="projects">

          <article class="project">
            <div class="project-num">10.01</div>

            <div>
              <h3>Access Control in Industrial Control Systems (ICS)</h3>
              <p>
                Graduation project designed and implemented a virtualized OT/ICS security lab
                focused on role-based access control and secure network access. Implemented 802.1X
                authentication with FreeRADIUS (PEAP/MSCHAPv2) and Active Directory, assigning users
                to role-based VLANs dynamically; applied VLAN segmentation and inter-VLAN isolation
                with pfSense; integrated Wazuh SIEM with custom rules to detect brute-force activity
                and trigger automated firewall quarantine; built and tested an OpenPLC-based industrial
                control scenario.
              </p>

              <div class="tags">
                <span class="tag">FREERADIUS</span>
                <span class="tag">802.1X</span>
                <span class="tag">PFSENSE</span>
                <span class="tag">WAZUH</span>
                <span class="tag">OPENPLC</span>
                <span class="tag">RBAC</span>
              </div>
            </div>

            <div class="arrow">↗</div>
          </article>

        </div>
      </div>
    </section>

    <section id="about">
      <div class="container">

        <div class="section-label">04 / about</div>

        <h2 class="section-title">
          Engineering secure networks without losing sight of operations.
        </h2>

        <div class="about-grid">

          <div>
            <div class="about-stat">
              <strong>NET</strong>
              <span>Enterprise networking</span>
            </div>

            <div class="about-stat">
              <strong>SEC</strong>
              <span>Security operations</span>
            </div>

            <div class="about-stat">
              <strong>OT</strong>
              <span>ICS / OT security research</span>
            </div>
          </div>

          <div>
            <div class="about-copy">
              I work on network security, firewall management, network segmentation, access control,
              security monitoring and SIEM technologies. Alongside this, my academic work in OT/ICS
              security has given me hands-on experience with access control, 802.1X/RADIUS-based
              authentication, RBAC and segmentation in industrial networks.
              <br><br>
              I focus on building, monitoring and improving secure and sustainable network
              infrastructure and keep developing my technical skills in cybersecurity along the way.
            </div>

            <div class="edu-list">
              <div><b>M.Sc.</b> Cybersecurity (Thesis) — Sakarya University, Institute of Natural Sciences · Jan 2026 – Present</div>
              <div><b>B.Sc.</b> Computer Engineering — Sakarya University · Sep 2021 – Aug 2025 · GPA 3.1/4.0</div>
            </div>

            <div class="lang-line">LANGUAGES — Turkish (Native) · English (B1)</div>
          </div>

        </div>
      </div>
    </section>

    <section id="contact">
      <div class="container">

        <div class="contact-box">

          <div>
            <div class="section-label">05 / contact</div>
            <h2>Let's build something secure.</h2>
          </div>

          <div class="contact-links">
            <a href="mailto:mustafa@mustafayakin.com" class="btn btn-primary">
              mustafa@mustafayakin.com ↗
            </a>
            <a href="https://linkedin.com/in/mustafayakin" class="contact-sub">linkedin.com/in/mustafayakin ↗</a>
          </div>

        </div>

      </div>
    </section>
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      <span>mustafa@netsec:~$ exit</span>
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