After 47 security audits we created a list of most common mistakes. 73% of teams make mistake #4.
Over the past two years, we've conducted 47 API security audits for clients from various industries. Fintech, e-commerce, healthcare, SaaS. The pattern is always similar - same mistakes, same vulnerabilities.
91%
of audited APIs had at least one critical vulnerability
Top 10 mistakes we find most often
1
No rate limiting (87% of cases)
Login endpoint without attempt limit = brute force attack ready. Email sending endpoint without limit = your server spams and lands on blacklists.
2
IDOR - Insecure Direct Object Reference (81%)
GET /api/users/123/invoices - change 123 to 124 and see someone else's invoices. Classic.
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