The Open Protection Index

An open standard for measuring DDoS resilience. One score to quantify your security posture.

85
Grade B - Good
Open Protection Index

OPI Calculator

Estimate your OPI score by adjusting the component values below

75/100
80/100
70/100
85/100
90/100
60/100
79
Grade C - Adequate
Your Estimated OPI
Defense Coverage 15.0
L7 Resilience 20.0
L3/L4 Resilience 10.5
Protocol Resilience 12.8
Operational 13.5
Evasion Resistance 6.0

Six Components of Resilience

OPI measures your protection across six critical dimensions

🛡

Defense Coverage

20% Weight

CDN presence, WAF configuration, origin protection, rate limiting, and scrubbing center integration.

🌐

L7 Attack Resilience

25% Weight

HTTP floods, Slowloris, cache bypass attacks, large file downloads, and API abuse protection.

🔌

L3/L4 Resilience

15% Weight

SYN floods, UDP amplification, network layer protection, and transport layer security.

🔒

Protocol Resilience

15% Weight

HTTP/2 Rapid Reset, CONTINUATION attacks, HTTP/3 QUIC vulnerabilities, and protocol-specific CVEs.

📈

Operational Resilience

15% Weight

Availability during attacks, latency degradation, recovery time, and false positive rate.

🕵

Evasion Resistance

10% Weight

JA3 fingerprint rotation detection, User-Agent rotation, slow rate attacks, and behavioral analysis.

Display Your OPI Score

Showcase your DDoS resilience with embeddable badges

OPI Grade A

Grade A - Excellent

OPI Grade B

Grade B - Good

OPI Grade C

Grade C - Adequate

Embed Code (Markdown)

![OPI Score](https://img.shields.io/badge/OPI-85%20(B)-3b82f6)

Embed Code (HTML)

<img src="https://img.shields.io/badge/OPI-85%20(B)-3b82f6" alt="OPI Score">

Get Your Real OPI Score

The calculator above is an estimate. Get a comprehensive OPI assessment with actual attack simulations and external validation.