Hire the Best Internet Security Specialists
in Nigeria

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Chukwuka O.

Awka, Nigeria

$35/hr
5.0
7 jobs

IT & Tech Support✅ Linux✅ Windows✅ MacOS✅ Cybersecurity✅ AI Agents✅ Are you struggling with user technical support satisfaction and cybersecurity? Then you need me! With over 5 years of hands on experience supporting users, managing teams and access controls, troubleshooting security related incidents, and maintaining secure IT environments resulting in over 50% productivity in the first 3 months. My strength lies in bridging the gaps between everyday technical support and cybersecurity best practices, ensuring systems stay protected while users remain productive. My premium services include: ✔ Agentic AI (OpenClaw / Claude etc..) ✔ Technical Support & Customer Success ✔ Technical Team Manager ✔ Windows Server ✔ Linux, Windows, MacOS & PowerShell ✔ Google Suite & Microsoft Office Applications ✔ I.T. & Network Administration ✔ Technical Writing & Documentation Why Business work with me: ✔ Result driven and customized approach on technical issues ✔ Excellent communication and prompt delivery ✔ Proven Record of De-risking Complex Technical Projects ✔ Bridge Between Executive Vision and Engineering Execution ✔ Architect of Scalable, Future-Proof Systems & High-Performance Teams With a customer-first approach, I deliver solutions that enhance the user experience while ensuring my team remains agile, productive and motivated. Without slowing down your operations, lets work together. Send me a direct message, an invite, or simply hire me now to book a one on one consultation call here on upwork.

  • Tech & IT
  • Administrative Support
  • Technical Support
  • Web Hosting
  • System Administration
  • Cybersecurity Tool
  • Cyber Threat Intelligence
  • Cybersecurity Monitoring
  • Email Support
  • Customer Support
  • Online Chat Support
  • Ticketing System
  • Answered Ticket
  • Office 365
  • Cross Functional Team Leadership
Dominic O.

Lagos Island, Nigeria

$35/hr
5.0
9 jobs

I am an experienced information security and cybersecurity professional with a successful background in SOC operations and IT GRC. My expertise includes security monitoring, vulnerability assessment, and deploying various security solutions in both traditional and cloud environments. I am seasoned in implementing IT GRC standards, frameworks, and regulations (ISO 27001, SOC2, BCMS, GDPR, NDPR, SCF, PCI-DSS), and risk management. With my experience, I also write technical content to break down cybersecurity concepts to lay terms. 💻 My skillsets include: ✅ Security monitoring and analysis. ✅ Cyberthreat Intelligence and OSINT. ✅ Deploying and configuration of security solutions. ✅ Implementing SIEM and EDR solutions and integration on networks and hosts. ✅ Building detection rules on SIEM for robust security monitoring. ✅ Cloud security. ✅ Parsing logs using regex. ✅ Incident response and analysis. ✅ Vulnerability assessment of networks. ✅ Network Security & Firewall Management ✅ Implementing IT GRC (Governance, Risk, and Compliance) standards, frameworks, and regulations (ISO 27001, SOC2, SOC3, BCMS, NDPR, GDPR, PCI-DSS) in enterprise environments. ✅ Risk management and Third-party assurance. ✅ Technical writing for executive and public reporting. ✅ Cybersecurity awareness and training. ✅ Python, Bash, XML, AQL, KQL, LEQL, HTML and CSS. ✅ Virtualization (VMWare, VirtualBox, HyperVM, OpenVZ, Xen) ✅ VPN systems, OpenVPN (installation and configuration) 🔐 Security Tools Experienced In: 🛡 ArcSight SIEM 🛡 IBM QRadar 🛡 Azure Sentinel 🛡 Carbon Black 🛡 Crowdstrike Falcon 🛡 Splunk 🛡 Wazuh 🛡 Rapid7 Insight Stack 🛡 LogSign SIEM 🛡 Cynet EDR 🛡 MDATP 🛡 SentinelONE 🛡 Darktrace 🛡 Fortinet Stack 🛡 Azure Security Stack 🛡 AWS Security Stack 🛡 iZOOlogic 🛡 Nessus Vuln. Scanner 🛡AlienVault SIEM 🛡Microsoft Windows 🛡Linux 🚀 What I Offer: 🌐 Comprehensive cybersecurity strategy 📈 ISO 27001 Implementation from scratch, compliance, and audit. 🖥 SOC monitoring and analysis. ⚙SIEM/EDR deployment, configuration, and integration. 💻 Secure network design & configuration 🌐 Ethical hacking & pen testing 🎯 Security awareness training 🤖 Social engineering assessments ☁️ Cloud Security Assessment. My certifications are: - CompTIA Security+ - Fortinet NSE3 - Microsoft 365 Certified Security Administrator Associate. - AWS CCP - ISC2 CC - PECB ISO/IEC 27001 Lead Implementer 📩 Do contact me let's get started. Whether you're a small business or a large enterprise, short-term or long-term project, I'm here to help strengthen your information security posture.

  • Intrusion Detection System
  • Firewall
  • Cloud Security
  • Microsoft Azure
  • Microsoft Endpoint Manager
  • System Security
  • Cloud Computing
  • Microsoft Active Directory
  • Cybersecurity Management
  • User Identity Management
  • AWS CloudTrail
  • Network Engineering
  • Digital Forensics
  • Network Monitoring
  • Information Technology
Matthew N.

Port Harcourt, Nigeria

$9/hr
5.0
6 jobs

Hi, I’m Matthew — an IT Support Specialist with 10+ years of experience supporting users, deploying secure systems, and solving complex technical problems both remotely and on-site. Certifications: Google IT Support Professional Google Cybersecurity ISO/IEC 27001:2022 Associate ISC2 Certified in Cybersecurity What I Do: Helpdesk support (email, phone, remote connection, and on-site) Windows server and desktop deployment (secure, multi-user) Software/hardware troubleshooting Remote access setup and management Experience with Zendesk, Freshdesk, Zapier (for automation) Familiarity with Mikrotik and Ubiquiti environments I’m committed to fast, friendly, and effective tech support. Whether you're a business, school, or startup, I’m ready to keep your users happy and your systems running smoothly.

  • Microsoft Office
  • Network Engineering
  • Server
  • Information Security
  • Windows Administration
  • Windows Server
  • macOS
  • IT Support
  • Cyber Threat Intelligence
  • System Administration
  • Remote IT Management
  • Ubiquiti
  • MikroTik
  • Cisco
  • Helpdesk
Precious M.

Benin City, Nigeria

$4/hr
5.0
1 jobs

I am a passionate Cybersecurity Specialist focused on fortifying digital defenses and minimizing organizational risk. My expertise lies in designing and managing resilient network architectures, executing meticulous penetration tests, and ensuring the stability of critical Server Administration operations. I help organizations maintain compliance and operational integrity in a constantly evolving threat landscape. With 3 years of experience in the security domain, I am committed to solving complex Network Security challenges and proactively identifying vulnerabilities. I hold certifications like CompTIA Security+, CEH (Certified Ethical Hacker), or OSCP, which underpin my practical knowledge. In my free time, I often participate in capture the flag (CTF) events, which keeps my technical skills sharp and my problem-solving mindset engaged. I reduced potential attack surface by 35% by auditing and hardening Server Administration configurations across a farm of 50+ Windows and Linux machines. I identified and remediated 12 critical level vulnerabilities through regular internal Penetration Testing exercises, directly preventing a potential data breach. I engineered a new enterprise Network Security policy that increased compliance adherence to 99.5% and successfully contained two sophisticated phishing campaigns. I implemented a Security Information and Event Management (SIEM) system that improved threat detection time by 50%. Expertise: Cybersecurity, Network Security, Penetration Testing, Server Administration, Ethical Hacking, Threat Analysis, Risk Management, SIEM, Firewalls (Palo Alto, Cisco), Incident Response, Vulnerability Assessment, AWS/Azure Security, Identity & Access Management (IAM), Compliance.

  • Penetration Testing
  • Tech & IT
  • Computing & Networking
  • Compliance
  • Information Security
  • Encryption
  • Network Access Control
  • Linux System Administration
  • Windows Administration
  • Virtual Assistance
  • Data Recovery
  • Threat Detection
  • Email Deliverability
  • Microsoft 365 Copilot
Odoyi F.

Port Harcourt, Nigeria

$12/hr
5.0
1 jobs

💬 Schedule a Free Consultation! Ready to elevate your application security? 🔐 I specialize in cutting-edge vulnerability assessments, software testing, web application security and mobile application VAPT that follow NIST SP 800-115 standards, OWASP WSTG methodology and leverage the latest techniques in the field. 🚀 With a focus on pinpointing and addressing potential threats, I'll help you safeguard your applications and keep your data secure. 🛡️ Let’s take your security to the next level! 🌐 🔒 My Expertise: • Mobile App VAPT • API Testing • Web Testing • Information Security • Manual QA Testing • Penetration Testing Why Work With Me (www.me)? 🌟 Customized Approach: Your needs are unique. I tailor my methods to deliver the most comprehensive and effective security testing for your specific requirements. ⏰ Timely Delivery: Time is critical in security. I ensure on-time delivery of detailed reports without compromising quality. 🔍 Complete Manual Testing: I provide thorough manual testing and immediate notifications if high-impact issues are found. 🔄 Unlimited Retesting: Fixed issues get unlimited retests and revisions to ensure robust security. 🔑 Critical Bug Detection: My expertise allows me to uncover critical vulnerabilities often missed by automated tests. ________________________________________ Tools and Methodologies: • Manual Testing: BurpSuite Professional, Nuclei, Ffuf, Nmap, Postman (API testing), Metasploit Framework, SQLmap, OWASP ZAP • Automated Testing: Acunetix, Nessus, Netsparker, Nikto etc.. ________________________________________ Penetration Testing Services: 1. Comprehensive Testing: I implement Manual and automated testing of all functionalities, including internal tests and network infrastructure assessments with tools like BurpSuite Professional, Acunetix, Nessus and lots more. 2. Detailed Reporting: I provide you with In-depth reports with exploitation methods, proof-of-concept screenshots, CVSS v3.0 risk scores, and impact analysis. 3. Remediation Guidance: Every report is accompanied with a clear advice on fixing vulnerabilities and understanding their risks. 4. Free Retests: I offer free retest to ensure your fixes work as intended with included retesting. Key Competencies: 🔥 Penetration Testing: Thoroughly identify and exploit vulnerabilities using a blend of manual and automated techniques to simulate real-world attacks. 🔥 Web / Mobile Application Vulnerability Assessment: Carefully uncover vulnerabilities like SQL injection, cross-site scripting (XSS), and more to strengthen your web security. 🔥 Source Code Review: Detailed code analysis to find and fix security flaws early in the development process. Consultation Services 🔥 Security assessment strategy sessions 🔥 Custom vulnerability analysis 🔥 Tailored recommendations and action plans 🔥 Follow-up consultations for ongoing support About Me: I am a passionate cybersecurity analyst specializing in penetration testing, web application vulnerability assessment, source code review, I offer comprehensive security solutions for various industries. I am committed to delivering exceptional service that meets your security goals and exceeds your expectations. Let’s work together to safeguard your infrastructure.

  • Penetration Testing
  • Vulnerability Assessment
  • Web Application Security
  • OWASP
  • Metasploit
  • Network Security
  • Software Testing
  • Information Security
  • API Testing
  • Web Testing
  • Web Proxy
  • Nessus
MacDonald O.

Port Harcourt, Nigeria

$5/hr
5.0
1 jobs

I am an IT Security & Systems Administrator with years of experience in IT Support, Network Administration, IT Infrastructure Optimization, and Database & Business Applications. My expertise includes: ✔ Cloud Security & Administration • Azure and AWS workload optimization • Secure cloud architecture design • Cost-efficient cloud solutions ✔ Network Security (CCNA Certified) • LAN/WAN configuration and troubleshooting • Firewall management • VPN setup and endpoint protection ✔ Linux & Windows System Administration • Server deployment and management (RHEL, Ubuntu, Windows Server) • Active Directory and Group Policy management • Patch management and vulnerability remediation ✔ Database & Business Applications • SQL Server administration and optimization • Advanced Microsoft Office Suite (Word, Excel, PowerPoint) • Business application integration and support ✔ Security & Compliance • SIEM monitoring (Wazuh) • Vulnerability scanning (Wazuh) • PCI-DSS and ISO 27001 compliance implementation ✔ IT Infrastructure Solutions • Secure wireless networks (WPA3) • Penetration testing and encryption solutions • System automation (Azure Runbooks, PowerShell) Certifications: ✔ Azure Administrator (AZ-104) ✔ Cisco CCNA ✔ CompTIA Security+ ce Certification ✔ IT Specialist - Networking ✔ Google Cybersecurity Keywords: Cisco, VPN, Azure, AWS, switch, router, CCNA, Windows Server, RHEL, Ubuntu, Active Directory, LAN/WAN, Firewall Management, Wazuh, Penetration Testing, PowerShell, Wireshark, SQL Server, Advanced Excel, Database Optimization, IT Support.

  • Information Security
  • Computing & Networking
  • Network Engineering
  • Database Management
  • Server Administration
  • Cybersecurity Management
  • Windows Server
  • Microsoft Windows
  • Linux System Administration
  • Microsoft Azure
  • Windows 11 Administration
  • Windows 10 Administration
  • Microsoft SQL Server Administration
  • IT Support
  • Microsoft Office

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