Pivithuru Milan PereraSecurity · Networks
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Pivithuru Milan Perera — Cybersecurity Engineer
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Hi, I'm Pivithuru Milan Perera. This portfolio is mainly where I share blog posts about network security, threat detection, and real-world cybersecurity engineering.

New posts on SOC operations, network hardening, and security tools

Know Me More

About Me

I'm Pivithuru Milan Perera, a cybersecurity and network security engineer focused on designing secure enterprise infrastructure—from firewalls and VPNs to SD-WAN and cloud-aligned controls. This portfolio is where I share practical insights from real-world engineering work.

Pivithuru Milan Perera — Cybersecurity Engineer

2+

Years Experience

ACADEMIC JOURNEY

Education

  • BSc (Hons) in Information Technology | 2021 - 2025

    Specializing in Computer Systems and Network Engineering from the Sri Lanka Institute of Information Technology (SLIIT).

  • Postgraduate Studies (Reading)

    Advancing my technical depth through the Master of Cybersecurity program at the University of Colombo School of Computing (UCSC).

Experience

Where I've Worked

From Sophos deployments and enterprise support at Sinetcom to Hillstone solution design and partner collaboration at Debug Technologies.

  1. Sales Engineer

    Debug Technologies · Sri Lanka

    I specialize in Hillstone advanced networks and security solutions, working closely with corporate partners and clients to evaluate network architectures, identify security vulnerabilities, and design tailored infrastructure that aligns with modern security frameworks.

    • Assess client and partner network architectures against security and business requirements
    • Identify vulnerabilities and gaps across enterprise infrastructure
    • Design tailored Hillstone-based solutions aligned with modern security frameworks
    • Collaborate with corporate partners on pre-sales engineering and solution design
  2. Network Security Engineer

    Sinetcom Pvt Ltd · Sri Lanka

    Built practical engineering expertise through hands-on deployment and enterprise support, with deep operational experience across Sophos security suites and production network environments.

    • Deployed, configured, licensed, and troubleshot Sophos security suites end to end
    • Delivered enterprise client support for production security and network issues
    • Implemented and maintained SSL proxies and complex NAT configurations
    • Designed and supported high-availability network architectures for clients

Blog

Writing & insights

Practical cybersecurity articles from real projects, covering threat detection, network hardening, firewall strategy, and secure architecture decisions.

View all posts
  • Cover image for what is wireshark and why it is used ? (Part 1)
    Cybersecurity
    6 min read

    what is wireshark and why it is used ? (Part 1)

    Wireshark is a network protocol analyzer that allows us to capture and inspect network packets as they travel between devices. Instead of simply looking at whether a connection works or fails, Wireshark allows us to look inside the communication and understand what is happening at the packet level.

    • Network Security
    • Network Engineering
    Read article
  • Cover image for Reflecting on My BSc (Hons) in Information Technology Specializing in Computer Systems & Network Engineering at SLIIT (2021–2025)
    Bsc
    5 min read

    Reflecting on My BSc (Hons) in Information Technology Specializing in Computer Systems & Network Engineering at SLIIT (2021–2025)

    When I look back at my journey starting from July 2021 all the way to completing my final requirements, enrolling in the BSc (Hons) in Information Technology specializing in Computer Systems and Network Engineering (CSNE) at the Sri Lanka Institute of Information Technology (SLIIT) was one of the most defining choices of my professional life.

    • Degree
    • IT
    • Networking
    • Career
    Read article
  • Cover image for The Hidden Vulnerabilities of Public Wi-Fi: Why Open Networks Are a Trap
    Cybersecurity
    6 min read

    The Hidden Vulnerabilities of Public Wi-Fi: Why Open Networks Are a Trap

    Ever logged onto a coffee shop's "free" Wi-Fi and did your office work while enjoying a good cup of coffee freely and happily, did you feel completely safe on free Wi-Fi? Think again. Behind that open connection lies a silent playground for hackers where passwords don't even need to be cracked, because your active sessions are stolen in plain sight. Discover why multi-factor authentication isn't enough and what you can do right now to protect your data before your next public login. Read the full post to uncover the hidden traps of unsecured networks!

    • Network Security
    Read article