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Hello I'm

Atiqur Rahman NullOne

Cyber Security Expert

I am your digital defender, passionate about outsmarting cyber threats and securing what matters most. Whether it’s fortifying servers, hardening networks, or uncovering vulnerabilities before attackers do, I combine expertise and innovation to stay ahead of evolving risks. Together, we can build a safer digital world—one system at a time.

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Get to Know Me

I’m actively working with a diverse range of technologies, including mobile hacking, wireless technologies, web development, blockchain, cybersecurity, and cryptography. My work revolves around exploring vulnerabilities, securing digital ecosystems, and staying ahead of emerging threats in the ever-evolving tech landscape. I am capable of handling all of all Your Cybersecurity and Cryptography Projects And Duties.

  • Web And Network Penetration Testing
  • Secure Businesses And Digital Assets
  • Get Cybersecurity Consultancy
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Cyber Shield Services

I began working as a freelancer & bug hunter before taking the position of Information Security Engineer.

Penetration Testing

Multiple layers of security are dispersed across the computers, networks.

Network Security

Continuously monitor network activities to detect and respond to suspicious

Web Security

For your security secure your data and assets as soon as possible.

Database Security

Data that one wants to keep secure in an effective cyber security strategy.

Secure Wi-Fi Implementation

Ensure the security of wireless networks to prevent unauthorized access.

Security Consultancy

Provide expert advice and tailored to one of the best organization's needs.

100+

Happy Customers

118+

Projects Done

98%

Success Rate

40+

Live Trainnings

why choose me

With over 3 years of experience in cybersecurity, I have worked with companies around the globe, helping them secure their digital assets. My journey has been driven by a passion for understanding cybersecurity in depth—from its foundational principles to modern-day advancements.

Advanced Security for Advanced Threats

Providing multi-layered security solutions to protect computers, networks, programs, and sensitive data against emerging threats that one wants to keep secure.

  • Certified and Professional Expert

    For business to have a successful defence against cyber attacks, threats, and .

  • Security on a global scale

    Automating interconnections with Cisco security solutions for scalable global protection.

  • 24/7 Premium Support

    Unified threat management system ensuring round-the-clock threat detection, investigation, and response for uninterrupted security.

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Certifications & Trainings

Explore my achievements in cybersecurity, cloud computing, and project management.

Certified Ethical Hacker (CEH) Practical
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CISSP Training
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Certified AppSec Practitioner
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Penetration Testing - CYBRARY
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Project Management Essentials Certified
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Cybersecurity Practices for Industrial Control Systems - CISA
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Certified Ethical Hacker v12 Training
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Cloud Computing Security - U.S. Department of Homeland Security
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Featured Articles

Explore my latest writings on cybersecurity, ethical hacking, and cutting-edge technologies.

Article Title 1
Hacking Windows PC in Seconds: WiFi USB Rubberducky

Explore how the WHID Cactus, a USB RubberDucky device, can be used to automate attacks on Windows PCs in seconds and get remote access.

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Article Title 2
How to Setup OpenWrt Router as a Wireless Pentesting Lab

A step-by-step guide to transforming an OpenWrt router into a wireless penetration testing lab. Compare it to the WiFi Pineapple and learn how to create your DIY ethical hacking setup.

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Article Title 3
Hack a netwwork of linux & windows machines

A detailed walkthrough of the Bandit challenge on TryHackMe, showcasing techniques to navigate Linux systems and solve challenges step by step. Ideal for beginners in ethical hacking.

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privacy is a human right and it belongs to you

Your Website, Web Servers, And Web Apps Are Protected By NullOne, Expert In Cyber Security, Penetration Testing, And Vulnerability Assessment

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Recent Challenges and Solutions

Currently, I am working on Web, Network, and System Security. My focus includes threat and asset management and network security. I also explore IDS, SIE, and Linux system security. Detection and response strategies are another key area I work on.

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VAPT & Penetration Testing

A proactive approach to identifying, assessing, and mitigating risks to your critical assets while safeguarding against evolving cyber threats.

Analyze The Current Security Posture

  • Penetration Testing
  • Vulnerability Assessment
  • Security Audits
  • Data Leak Worksheet
  • Access Control Worksheet
  • Risk Register
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Detection & Response

Stay ahead of emerging threats by identifying and responding to viruses, malware, and other cyber risks before they cause harm.

Assess the Current Security Framework

  • Incident Detection
  • Incident Response
  • Incident Management
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Linux System Security

Proactively safeguard Linux systems against the latest viruses, malware, and cyber threats with robust security measures.

Evaluate the Existing Security Measures

  • Manage File Permissions
  • Manage User Privileges
  • Manage Crucial Files
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Network Security

Protect your network from evolving threats by implementing advanced measures to detect, prevent, and respond to cyberattacks.

Review the Current Network Security Strategy

  • Security Risk Assessment
  • Analyze Network Attacks
  • NIST Respond OS Hardening
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IDS & SIEM Solutions

Leverage advanced intrusion detection and SIEM systems to proactively identify, monitor, and mitigate potential threats in real time.

Evaluate the Efficiency of Security Monitoring Tools

  • IDS - Suricata
  • SIEM - Splunk
  • SIEM - Chronicle

Whoom I have work with

I'm An Cyber Security Specialist With Experience In A Variety Of Related Fields, Including Web, System, and Network Security also Vulnerability Management, Intrusion Detection.

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What My Clients Says

"Atiqur Rahman's expertise in cybersecurity is unparalleled. He helped us identify vulnerabilities we didn’t even know existed and provided solutions that transformed our security framework. His professionalism and in-depth knowledge are truly impressive."

Sarah Johnson

CTO, TechSecure Inc.

"Working with Atiqur was a game-changer for our organization. His skills in penetration testing and hardware security ensured our systems were fortified against emerging threats. We now have peace of mind knowing our data is secure."

Michael Lee

IT Director, DataShield Corp.

"Atiqur’s ability to simplify complex cybersecurity concepts made it easier for our team to understand and implement effective measures. His work on our OpenWRT-based network solutions was outstanding, and the results speak for themselves."

Jessica Taylor

Network Administrator, SecureNet Solutions

"Atiqur Rahman’s cybersecurity expertise was a lifesaver for our online tutoring platform. He identified critical vulnerabilities in our systems and implemented robust solutions to ensure the safety of our students’ data. His dedication and precision were remarkable."

John Smith

Founder, StarlingTutoring

"Atiqur’s work revolutionized how we handle customer data at PopeTravels. His innovative approach to securing our network and his deep knowledge of hardware hacking ensured our clients could book with confidence. His expertise is truly world-class."

Martha Davis

CEO, PopeTravels

Get in Touch

LinkedIn

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Email

nulloneinfosec@gmail.com
GitHub

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Tryhackme

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