Web Application Security Audit by OWASP Top 10
Imagine your web application processing payments, and an attacker gains access to the customer database through an SQL injection. The consequences — data breach, reputational loss, multimillion-dollar fines. An OWASP Top 10 security audit is your shield. We identify vulnerabilities before hackers find them. Our engineers are certified (CEH, OSWE) with over 50 projects experience. Confidentiality and completeness are guaranteed. The audit includes automated scanning and manual code review. Manual analysis is 3 times better than automated scanning at finding critical flaws. Fixing a vulnerability in production costs 10x more than during development. A typical audit starts at $500 and can prevent damages of up to $50,000. On average, every dollar invested in auditing saves $1–1 in attack mitigation. We check not only OWASP Top 10 but also business logic, containers, CI/CD. A full assessment gives confidence in production security and protects against reputational risks. Our reports contain concrete PoCs and recommendations.
What vulnerabilities do we check?
| ID | Category | Examples |
|---|---|---|
| A01 | Broken Access Control | IDOR, privilege escalation |
| A02 | Cryptographic Failures | weak algorithms, exposed data |
| A03 | Injection | SQL, NoSQL, OS, LDAP |
| A04 | Insecure Design | missing rate limit, predictable tokens |
| A05 | Security Misconfiguration | default passwords, verbose errors |
| A06 | Vulnerable Components | outdated dependencies with CVE |
| A07 | Auth Failures | weak passwords, insecure sessions |
| A08 | Software & Data Integrity | insecure deserialization, CI/CD attacks |
| A09 | Logging Failures | insufficient logging |
| A10 | SSRF | requests to internal resources |
How do we conduct the audit?
Our process consists of five steps designed for thorough coverage.
Step 1: Reconnaissance and Mapping (3–5 days)
Inventory of application entry points. We collect endpoint maps, technology stack, and versions. We use Burp Suite for traffic interception.
# Attack surface mapping
nmap -sV -sC -p- target.example.com
ffuf -w /usr/share/wordlists/dirb/big.txt -u https://target.example.com/FUZZ -mc 200,301,302,403
katana -u https://target.example.com -jc -d 3
whatweb https://target.example.comStep 2: Automated Scanning (1–2 days)
# Active scanning
zap-cli quick-scan --self-contained --start-options '-config api.disablekey=true' https://target.example.com
nikto -h https://target.example.com -ssl -output report.html
nuclei -u https://target.example.com -t cves/ -t misconfigurations/ -severity critical,high,medium
semgrep --config=p/owasp-top-ten ./srcStep 3: Manual Analysis (5–10 days)
We manually test each scenario: negative amounts, coupon brute-force, verification bypass. This gives a full picture of security.
Step 4: Reporting (1–2 days)
Executive summary for management, technical report with PoC, risk matrix.
Step 5: Retesting (2–3 days)
Verification of fixes upon request.
Audit Timeline
| Application Type | Timeline |
|---|---|
| Landing page / corporate site | 3–5 days |
| SaaS with authentication | 7–14 days |
| Financial app / marketplace | 14–21 days |
| Retesting after fixes | 2–3 days |
Detailed testing scenarios
We go beyond automated scanning to cover critical areas.
Authentication and Authorization Check
We test IDOR, privilege escalation, and JWT vulnerabilities.
# IDOR and JWT
curl -H "Authorization: Bearer {token}" https://target.com/api/users/{id}/profile
python jwt_tool.py -t <token> -T hashcat -a 0 -m 16500 jwt.txt wordlist.txtInjections and Client-Side Attacks (3–4 days)
# SQLmap and XSS
sqlmap -u "https://target.com/search?q=test" --level=5 --risk=3 --dbs --batch
dalfox url "https://target.com/search?q=test" --output xss_report.txtSSRF checks are done manually: we substitute links to internal resources (AWS metadata, Redis, file://).
Configuration Analysis (1–2 days)
# TLS, headers, dependencies, and secrets testssl.sh --full https://target.example.com sslyze --regular target.example.com npm audit --audit-level=moderate composer audit gitleaks detect --source . --report-format json Importance of Business Logic Analysis
Automation does not find payment bypass, coupon manipulation, or race conditions. We manually test each scenario: negative amounts, coupon brute-force, verification bypass. For example, in an e-commerce store we found that the cart total could be modified via JSON request manipulation. This would allow an attacker to obtain goods at zero price. As noted in the OWASP official documentation, manual testing finds up to 40% more vulnerabilities than automated scanning, and for business logic this factor can reach 5x.
Example report excerpt
VULN-001: SQL Injection in Search
Severity: Critical (CVSS 9.8) Affected: GET /api/search?q= CWE: CWE-89
Description: The q parameter is inserted into SQL query without parameterization.
PoC: GET /api/search?q=' OR '1'='1 → returns all records.
Recommendation: Use prepared statements.
What does the report include?
- Executive Summary for management (no technical details)
- Technical section with PoC for each vulnerability
- Risk matrix (Severity × Likelihood)
- Remediation roadmap with priorities
- OWASP Top 10 checklist (status of each item)
Deliverables
- Detailed security audit report (PDF, internal wiki) with executive and technical sections
- Access to secure portal for report viewing and status tracking
- 30-day email support for questions on findings
- Optional retesting after fixes (additional cost)
We have conducted over 50 assessments for SaaS products. Request a consultation — we'll assess your project and propose an optimal plan. Learn how to protect your web application from modern threats: the OWASP official website.