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Explorer
Fiverr Pro
Français
$
USD
I will fix website bugs and security vulnerabilities like xss, csrf and sql injection
Sentinel O.
À propos de ce service
>>> Your website is only as strong as its weakest security gap.
Even a small vulnerability can let attackers:
- Steal user or customer data
- Inject malicious scripts into your pages
- Deface your website
- Compromise your database
I'm a CEH & CompTIA Security+ certified developer who fixes both everyday bugs
and serious security vulnerabilities so your site works AND holds up under attack.
WHAT I FIX:
- XSS (Cross-Site Scripting)
- CSRF attacks
- SQL Injection vulnerabilities
- Broken authentication & session issues
- Insecure APIs
- Missing security headers
- Exposed sensitive data
- General bugs & broken functionality
WHAT YOU GET:
- Full security audit of your application
- Detailed vulnerability report (with severity ratings)
- Issues fixed directly in your codebase
- Secure authentication improvements
- Best-practice recommendations to prevent future issues
Whether it's a small bug or a critical security hole, I'll find it and fix it properly
not just patch the symptom.
Message me with your issue before ordering so I can scope it accurately.
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Découvrez Sentinel O.
Sentinel O.
Full Stack Developer and Security Engineer
- DeNigeria
- Membre depuisjuin 2026
- Temps de réponse moy.1 heure
- Dernière commande1 semaine
Langues
Anglais, Français, Espagnol, Néerlandais, Allemand
I am a Full Stack Web Developer with strong expertise in Cybersecurity, helping businesses, startups, and individuals create modern web applications that are not only beautiful but also protected against real-world threats.
>> OFFERS
- Web Development
Responsive and modern website
Landing pages, portfolio, E-commerce websites
API integration & development
Performance optimization
HTML, CSS, JavaScript, React, Next.js, Vue.js, Framer Motion, Three.js
-- CYBERSECURITY SERVICES
Website security audit
Fixing security issues (XSS, CSRF, SQL Injection, ...)
API security
Code review for security.
Mon portfolio
FAQ
Can you guarantee my website will be 100% secure?
Security is never “100% guaranteed” because new vulnerabilities can appear over time. However, I will remove known vulnerabilities, harden your system, and significantly reduce attack risks using industry best practices.
Do you remove malware or hacked files?
Yes — in the Premium package, I can clean infected files, remove malicious scripts, and restore your website integrity.
Will you improve my website performance too?
Yes, in addition to security fixes, I may also: Optimize backend performance Improve API response security Clean unnecessary vulnerable code
Will I get a report after the work?
Yes. You will receive a summary report of vulnerabilities found and fixed, plus recommendations for future protection.
What security issues can you fix?
I can fix: XSS (Cross-Site Scripting) SQL Injection CSRF attacks Broken authentication Insecure APIs Exposed sensitive data Weak security configurations
