Hire the Best Bug Bounty Experts

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Pankaj R.

Chandigarh, India

$20/hr
4.9
125 jobs

Is your digital infrastructure secure against today's sophisticated threats? I specialize in identifying and mitigating security vulnerabilities before they can be exploited. With a focus on real-world penetration testing and comprehensive malware cleanup, I ensure your systems are robust and resilient. 🛠️ Services I Provide: Web & API Penetration Testing: Combining manual and automated techniques to uncover vulnerabilities. WordPress Security & Malware Removal: Protecting your site from threats and ensuring smooth operation. Network & Server Vulnerability Scanning: Utilizing tools like OpenVAS and Wireshark for thorough assessments. Compliance-Oriented Security Assessments: Ensuring adherence to standards such as PCI-DSS and ISO 27001. Email Setup & Security Hardening: Securing communications with platforms like Gmail, Hostinger, and SendGrid. 📈 Highlights: 4+ Years Experience | CEH Certified 20+ Projects Delivered with 5-Star Ratings Expertise in OWASP Top 10, CVSS, and MITRE ATT&CK Post-audit Guidance and Remediation Support 100% Confidentiality | NDA-Friendly I am committed to delivering high-quality security solutions tailored to your needs. Let's work together to fortify your digital presence.

  • Information Security
  • Security Assessment & Testing
  • Penetration Testing
  • Malware Removal
  • Ethical Hacking
  • Compliance
  • Web App Penetration Testing
  • Cloud Security
  • WordPress Security
  • Cloudflare
  • DNS
  • Google Workspace
  • Firewall
  • Technical Support
  • Linux System Administration
  • Windows Administration
  • Email Deliverability
MD HASANUR R.

Pabna Sadar, Bangladesh

$15/hr
4.9
26 jobs

CEH ( Certified Ethical Hacker). I am a Professional Ethical Hacker and Expert in Penetration testing and Website Security and Network Scanning I have 5+ experience in projects ranging from, Bug hunting, penetration testing, network Testing, Website Security, analysis, vulnerability assessment, and testing to investigative and forensic work. I bring high standards and tried and tested methodology with manual bug Hunting and techniques to deliver you professional results. ✅Professional at Bug Bounty Hunting ✅Professional at Penetration Testing ✅System Hacking ✅Network Scanning ✅Professional at API Testing ✅Professional at Android and IOS Penetration Testing ✅Professional in Security Testing ✅Professional at Web Application Security ✅Professional at Vulnerability Assessment ✅Professional at Network Penetration Testing ✅Professional at Hacked site Recover ✅ Professional at Malware Removal/Virus Removal ✅ Website Testing part manually = Brute Force Attack = Unauthorized access to card = Business logic flaws allow the unauthorized transfer of funds = Unauthorized access to customer data = Unauthorized access to the example.com website = Authentication related issues = Authorization related issues = Data Exposure = Smuggling Testing = Bypass Rate Limit Protection = Bypass Authentication = Broken Access Control = Information Disclosure = Remote Code Execution (RCE) = Server-Side Request Forgery (SSRF) = Subdomain Takeover = Account Takeover = Code Execution = Content Discovery = Cross-Site Request Forgery (CSRF) = SQL Injection (SQLI) = HTML Injection / Content Injection = Cross-Site Scripting (XSS) = Command Injection = Local File Inclusion (LFI) = Insecure Direct Object Reference (IDOR) = XML External Entity (XXE) = Remote File Inclusion (RFI) = URL Redirection ✅System Testing 1. Password Cracking 2. Privilege Escalation 3. Malware Analysis 4. System Exploitation 5. Post Exploitation 6. Social Engineering 7. Network Sniffing 8. Denial of Service (DoS) Attacks 9. Security Misconfigurations 10. Vulnerability Scanning and Exploitation 12. Exploit Development ✅ Network Scanning Network Scanning List 1. Network Discovery 2. Port Scanning 3. Vulnerability Scanning 4. Service Version Detection 5. Network Mapping 6. Network Protocol Analysis 7. Wireless Network Scanning 8. SNMP Scanning 9. DNS Enumeration: 10. Network Performance Testing 11. Firewall and IDS/IPS Evasion 12. IoT and SCADA Network Scanning: 13. Cloud Network Scanning ✅ Penetration Testing Tools: = Metasploit = BurpSuite Professional = Nessus Professional = Acunetix Proffessional = Nuclei = Nmap = FFUF = Gau = Waybackurls = SQLMAP = wpscan = OWASP ZAP, etc. Terms of Services: • 100% Customer Satisfaction • Guaranteed Refund if not satisfied

  • Bug Bounty
  • WordPress Malware Removal
  • Security Assessment & Testing
  • Security Testing
  • Information Security
  • Penetration Testing
  • Malware Removal
  • Web Testing
  • Web Application Security
  • Vulnerability Assessment
  • Bug Investigation
  • Website Security
  • Ethical Hacking
  • Network Penetration Testing
  • AT&T Cybersecurity
Youssef E.

Kenitra, Morocco

$20/hr
5.0
23 jobs

I find the vulnerabilities in your web apps, APIs, and networks before attackers do, then hand your team a clear, reproducible penetration testing report they can act on. GXPN and GCIH certified. Top Rated on Upwork with 100% Job Success across web application, API, and network security engagements. No scanner dump and no jargon wall. Every finding comes with a severity rating (CVSS), working proof of concept, and a concrete fix your developers can ship. What I test: - Web application penetration testing (OWASP Top 10, PTES, NIST) - API security testing (REST, GraphQL, auth/OAuth, IDOR, broken access control) - SaaS and multi-tenant assessments (Supabase / Firebase data-isolation testing) - Network and external perimeter penetration testing - Source code / secure code review How I work: authorized testing only, on systems you own or have permission to test. Everything is documented over Upwork so you get a written record of every finding, not a verbal hand-wave. I retest after you patch to confirm the holes are actually closed. Credentials: GXPN (GIAC Advanced Penetration Tester & Exploit Researcher), GCIH (GIAC Certified Incident Handler), SANS CTF winner, and an active national/international CTF competitor (web, reverse, crypto, forensics). I also handle WordPress malware removal and incident response. See my Project Catalog for a fixed-price option.

  • Penetration Testing
  • Web Application Security
  • WordPress
  • Malware Removal
  • Website Security
  • Vulnerability Assessment
  • Network Penetration Testing
  • OWASP
  • Information Security
  • API
Florjan L.

Tirana, Albania

$35/hr
5.0
650 jobs

I am an OSCP+ and CEH certified Professional Penetration Tester specializing in Web Application, API, Mobile Application, and Infrastructure Security Testing. Over the last years, I have completed more than 600 penetration tests and security assessments for clients across finance, SaaS, healthcare, e-commerce, and enterprise environments. My main focus is helping companies identify real security risks before attackers do, with clear evidence, practical remediation guidance, and professional reports suitable for compliance, audit, and internal security teams. Core services I provide: • Web Application Penetration Testing • API Security Testing • Mobile Application Penetration Testing for Android and iOS • SOC 2, ISO 27001, PCI DSS, AMAZON SP and Compliance-Oriented Penetration Test Reports • OWASP Top 10 Security Testing • OWASP WSTG-Based Assessments • Vulnerability Assessment and Security Hardening • Retesting and Remediation Validation I perform Black Box, Gray Box, and White Box penetration testing depending on the client’s needs. My reports are structured, professional, and easy to understand by both technical teams and management. Each finding includes clear evidence, risk rating, business impact, CVSS scoring where applicable, and actionable remediation steps. Clients usually hire me when they need: • A professional penetration test before a product launch • A security report for SOC 2, ISO 27001, PCI DSS, AMAZON SP vendor review, or investor due diligence • Web, API, or mobile app testing by an experienced OSCP-certified tester • A practical security assessment focused on real exploitability, not only scanner output • Fast communication, clear reporting, and reliable retesting after fixes My goal is not only to find vulnerabilities, but to help your team understand, prioritize, and fix them properly. Sample penetration testing reports can be provided upon request.

  • Security Assessment & Testing
  • Vulnerability Assessment
  • Kali Linux
  • Application Security
  • Penetration Testing
  • Network Security
  • Security Infrastructure
  • Manual Testing
  • Ethical Hacking
  • OWASP
  • Windows Server
  • NIST SP 800-53
  • Internet Security
  • Web Application Security
  • Security Engineering
Gurpreet S.

Delhi, India

$30/hr
5.0
4 jobs

Security Engineer | Penetration Testing | Bot Mitigation | Incident Response | Application Security I work as a Senior Security Engineer where I deal with large scale security challenges daily, from bot networks and web abuse to vulnerability assessments and incident response on platforms serving millions of users. My background covers the full security lifecycle: Offensive security Vulnerability assessment and penetration testing across web applications, identifying weaknesses before attackers do. Experience with VAPT engagements covering OWASP Top 10, authentication flaws, injection vulnerabilities, and business logic issues. Defensive security Bot mitigation, web abuse detection, WAF configuration, rate limiting, and traffic analysis. I have dealt with everything from credential stuffing and account takeover attempts to large scale scraping operations and store cloning attacks. Risk and compliance Threat modeling, architecture risk assessments, and security reviews helping businesses understand their attack surface and prioritise what to fix first. Incident response Investigating active breaches, tracing attack vectors, containing damage, and hardening systems post incident so it does not happen again. Some specific problems I help businesses solve: Unauthorised account access and breach investigations, bot traffic and automated scraping, fraudulent analytics inflation, store cloning and product theft, credential stuffing, checkout abuse, WAF setup and tuning, and ongoing security monitoring. My approach is practical not theoretical. I start by understanding exactly what is happening before recommending anything. Whether that is analysing traffic patterns, reviewing access logs, or running a proper vulnerability assessment the goal is always targeted solutions that fix the real problem. New to Upwork, not new to security.

  • Computing & Networking
  • Information Security
  • Cloudflare
  • Cyber Threat Intelligence
  • DevOps
  • Cloud Security
  • Network Security
  • Web Application Security
  • AI Agent Development
  • Threat Detection
  • AI Security
  • Cybersecurity Monitoring
  • NIST SP 800-53
  • Ethical Hacking
  • Vulnerability Assessment
  • Fraud Detection
  • ISO 27001
  • Information Security Audit
  • Splunk
  • CrowdStrike
Hassan S.

Karachi, Pakistan

$15/hr
5.0
4 jobs

Your applications and infrastructure are only as secure as the last person who tried to break in. I make sure that person is me — before a real attacker gets there. I'm an offensive security specialist with 7+ years in ethical hacking, and I've led hundreds of penetration tests, security audits, and red team engagements — for multinational enterprises with thousands of assets and for startups that need to prove security to win their first big customer. My focus is hands-on, manual exploitation: finding the flaws automated scanners miss, then showing you exactly how an attacker would chain them into real damage. Every engagement ends with a report your developers can actually act on — not a 200-page scanner dump. Here's how I help: 🔍 Penetration Testing Comprehensive manual + automated testing of web apps, APIs, mobile apps, servers, and networks (internal and external). I work with industry-standard tooling — Burp Suite Professional, Nessus — alongside custom scripts refined across past engagements to dig deeper than off-the-shelf tools allow. 📑 Professional Reporting & Risk Analysis A clear, professionally written report for every finding, including step-by-step exploitation methodology, full HTTP requests/responses, annotated proof-of-concept screenshots, standardized CVSS v4.0 ratings, and the real business impact tied to each affected asset. 🛠️ Remediation Guidance Tailored, best-practice fixes for every issue — explained so both your engineers and your decision-makers understand the risk and the path to closing it. 🌐 Asset Discovery & Mapping Active and passive reconnaissance to reveal your true attack surface: subdomain enumeration, port and service discovery, and identification of exposed public-facing assets. 🔁 Free Retest & Validation A complimentary re-test after you've remediated — verifying fixes hold and confirming no alternate exploitation paths remain. 🕵️ OSINT Reconnaissance Open-source intelligence to surface what attackers already know about you: breached credentials, leaked documents, exposed metadata, and chatter on forums and the dark web — backed by access to a curated repository of 4+ billion records. 🤝 Pre-Engagement Consulting Scoping sessions to define your Scope of Work, choose the right engagement type (black-box, grey-box, or white-box), set access requirements, and guide first-time clients through the process end to end. 🎯 Post-Engagement Debrief A walkthrough of every finding — clarifying technical impact in plain language, prioritizing by real-world risk, and mapping out how to strengthen your security posture going forward. If you're protecting customer data, preparing for a compliance or vendor security review, or simply want to know where you stand before someone else finds out — let's talk. Send me a message with a bit about your project and I'll tell you honestly how I can help.

  • Bug Bounty
  • Information Security
  • Penetration Testing
  • Security Assessment & Testing
  • Vulnerability Assessment
  • Security Testing
  • Web App Penetration Testing
  • Cybersecurity Management
  • Kali Linux
  • Web Application Security
  • Cloud Security
  • Black Box Testing
  • Information Security Awareness
  • Network Penetration Testing
  • OWASP
  • Risk Assessment
  • WordPress Security

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