The API Security Gap

97% of API attacks bypass your WAF

Most security budgets protect against 3% of how APIs actually get exploited. Here's the math — and how to close the gap.

See the comparison → Read the full analysis →

$4.44M

Avg. breach cost

IBM 2025

97%

Single-request exploits

Wallarm 2026

~$5K/yr

Complete security stack

ContractShield + PTaaS

The Protection Gap

Your security stack has layers — but there's a gap between infrastructure defenses and application code where business logic attacks thrive.

Internet
Incoming API requests
WAF / CDN
DDoS, SQLi patterns, XSS signatures, rate limiting
API Gateway
Authentication, routing, rate limiting
ContractShield
Contract enforcement, authorization, BFLA/BOLA detection
Your Application
Business logic

Without ContractShield, there's no layer enforcing authorization and business logic between your gateway and your code.

What Each Layer Actually Catches

WAFs and API gateways protect the perimeter. ContractShield protects the application layer — where 97% of attacks live.

Attack Type WAF API Gateway ContractShield
SQL Injection ✅ ⚠️ ✅
XSS ✅ ❌ ✅
DDoS ✅ ⚠️ —
Command Injection ✅ ❌ ✅
Prototype Pollution ❌ ❌ ✅
BFLA (Privilege Escalation) ❌ ❌ ✅
BOLA (IDOR) ❌ ❌ ✅
Authorization Bypass ❌ ⚠️ ✅
Schema Violation ❌ ⚠️ ✅
Business Logic Abuse ❌ ❌ ✅

The rows highlighted in red are the attacks that WAFs and API gateways structurally cannot catch — they require application-layer context.

The Cost Comparison

Four scenarios for a mid-size SaaS company with 50 API endpoints.

Scenario A

WAF + Annual Pentest

Current state for most companies

$27,400/yr

  • Cloudflare Business WAF $2,400
  • Annual API Pentest $25,000

No business logic coverage between pentests

Scenario B

+ Enterprise API Platform

Adding Salt Security (Startup tier)

$77,400/yr

  • Cloudflare Business WAF $2,400
  • Salt Security (Startup) $50,000
  • Annual API Pentest $25,000

Behavioral detection (monitoring-based)

Scenario C

+ ContractShield Pro

Contract-enforced, every request

$27,868/yr

  • Cloudflare Business WAF $2,400
  • ContractShield Pro $468
  • Annual API Pentest $25,000

Contract-enforced on every request

Best Value
Scenario D

CS + PTaaS

Complete stack, continuous testing

~$4,820/yr

  • Cloudflare Business WAF $2,400
  • ContractShield Pro $468
  • PTaaS Pro ~$1,950
  • Annual Pentest $0

Enforced + validated + compliance-ready

~$4,820

Full stack annual cost

5.5x

Less than WAF + pentest

15x

Less than enterprise stack

46x

ROI at 5% risk reduction

At $4.44M avg. breach cost, even a 1% probability reduction yields $44,400 in expected risk reduction — a 9.2x return on ~$4,820.

Available Everywhere

One contract-first approach. Three platforms. Zero vendor lock-in.

npm
npm install @cshield/node
PyPI
pip install contractshield
Maven Central
dev.contractshield

The Continuous Security Loop

PTaaS discovers vulnerabilities. ContractShield blocks them in real-time. Together, they create a closed feedback loop that traditional pentest + WAF combinations can't match.

PTaaS

  • → Discovers vulnerabilities continuously
  • → Scheduled scans (weekly, monthly, per deploy)
  • → Validates that protection works
  • → Generates compliance reports

ContractShield

  • → Blocks attacks in real-time via API contracts
  • → Enforces authorization on every request
  • → BFLA / BOLA / schema violation detection
  • → Runtime enforcement 24/7
Continuous feedback loop

PTaaS discovers what needs protecting. ContractShield protects it. PTaaS validates protection works. Compliance reports document everything.

See it for yourself

Fire real attacks against a protected API. No signup required.

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Start protecting your APIs today

Open source core. Apache 2.0. No credit card required.

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Data: IBM Cost of a Data Breach 2025, Wallarm 2026 API ThreatStats Report