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Api

Cloudflare

Security
Needs review
v17b544f8
A client-side JavaScript library that integrates Cloudflare Turnstile, a CAPTCHA-replacement service designed to protect websites from bots and abuse without user interruption.
Updated 11/2/2026
https://challenges.cloudflare.com/turnstile/v0/g/5c2e6b612edd/api.js?onload=_9980d91f895a6bc911b11aea&render=explicit
Overall Score
89

Recorded Observations

6

For this resource version

File Size

84.72 KB

Download size

Load Time

22.12ms

Network latency

Execution Time

0.00ms

Runtime performance

Version Telemetry

Version Timeline

Visual representation of each version's active period

Metrics Over Time

Security score, performance score, and file size trends

0255075100v17b5Normalized ScoreVersion
Security Score
Performance Score
File Size (KB)

Uptime History

Average response time over time

Version History Details

Detailed information for each version

v17b544f8Latest
Span: 1 day
Score: 79
Size: 84.72 KB

Exposure & Risks

Security Score

Overall Security79 / 100
Security RatingNeeds review

Risk Assessment

Critical Risks0
Total Observations1

Security Rating

Needs review
Behavioral concerns detected; review and mitigation are advised.

Behavioral Concerns

No Known Security Risks

Our telemetry scan did not detect any immediate behavioral security risks for this resource.

Security Observations

Security-related findings from analysis

No security observations recorded for this version

Privacy & Data Flow

Data Collection

Cookies and local storage used by this script

Cookies

__cf_bm30 minutes
This cookie is set by Cloudflare and is necessary for bot management. It helps distinguish between legitimate human visitors and bots by analyzing various client-side signals, improving security and preventing abuse.

Third-party Connections

External domains this script connects to

No external connections detected

Permissions Required

Browser permissions and capabilities used

No special browser permissions required.

Privacy Observations

Privacy-related findings from analysis

No privacy observations recorded for this version

Technical & Performance Analytics

Load Performance

File Size84.72 KB
Load Time22.12ms

Runtime Performance

Execution Time0.00ms
Network Requests0

Impact Assessment

Good
Minimal performance impact on page load

Performance Observations

Performance-related findings from analysis

No performance observations recorded for this version

Global Variables

Variables added to the global scope

turnstile

Event Listeners

Events this script listens for

No event listeners detected

Browser API Access

APIs and browser features accessed by this script

No API access detected

Technical Details

Compressed
Yes
CDN Delivery
Yes
Recorded Observations
6
Is Mirror
No
Network Requests
0
Resource Hash
17b544f84ce1d1288dc2dc80e0b88e3fca8146a1e708c609cba315d96af63044

AI Insights & Alternatives

Description

A comprehensive overview of this resource

This script initializes Cloudflare Turnstile on a webpage, a privacy-centric alternative to traditional CAPTCHAs. It works by running a series of non-intrusive JavaScript challenges in the background to detect and block malicious traffic, presenting interactive challenges only when absolutely necessary. The script evaluates various signals from the user's browser, such as browser characteristics, user behavior, and telemetry, to differentiate between legitimate human visitors and automated bots. It typically operates invisibly to the user, providing a seamless experience while safeguarding the website from spam, credential stuffing, and other automated threats. The script communicates with Cloudflare's servers to validate the user's legitimacy, ensuring that only valid human traffic proceeds. It is designed to minimize data collection and prioritize user privacy, avoiding personally identifiable information. Upon successful completion of a challenge (or invisible verification), a token is generated and passed back to the website's server for verification, confirming that the user is human.

Key Features

Core functionalities and capabilities of this resource

  • Anti-bot
  • CAPTCHA replacement
  • Invisible challenges
  • Machine learning
  • Privacy-focused
  • Spam protection
  • Fraud prevention

Alternatives

Similar libraries you might consider

Documentation & Resources

Official Documentation