SecurityCipher
Home Blog About Us

Learn Paths, courses, and reference docs

  • ๐Ÿš€ Start Here Beginner path through the site
  • ๐Ÿ—บ๏ธ Penetration Testing Roadmap Structured path to become a pentester
  • ๐ŸŽ“ Free Security Courses Current free Udemy coupon listings
  • ๐Ÿ“„ Secure Code Explain Vulnerable vs secure code side by side
  • ๐ŸŽฏ Penetration Testing Tricks Field notes for real engagements
  • ๐Ÿ“– Vulnerability Explain How common vulns actually work

Checklists Interactive reviews and LLM risks

  • โœ… Security Checklists Hub All interactive security checklists
  • ๐Ÿ“‹ Writeup Checklists Steps derived from real writeups
  • ๐Ÿง  LLM AI Security Checklist Controls for LLM apps
  • ๐Ÿค– OWASP LLM Top 10 LLM Top 10 risks mapped out
  • ๐Ÿงฐ Burp Suite Guide Step-by-step Burp tutorials
  • ๐Ÿ“˜ Payload Field Manual Safe-first probes and signals

Practice Browser labs, games, and explorers

  • ๐Ÿ”ฌ Interactive Labs SQL injection, AI, architecture review
  • ๐ŸŽฎ Security Games Phishing, JWT, WAF, and more
  • ๐Ÿš— On-Call Drive Neon-city arcade security missions
  • โ€ข Shift Zero SOC desk: phish, OTP, malware, tickets
  • โ“ Application Security Quiz Web, secure coding, and cloud quizzes
  • ๐Ÿ—บ๏ธ OWASP Top 10 Explorer Clickable risk map with signals
  • ๐Ÿ”€ Interactive Attack Paths Recon-to-impact chains

Tools & Career Databases, jobs, and community

  • ๐Ÿ› ๏ธ Security Tools Curated recon, SAST, and bounty tools
  • ๐Ÿ”Ž CVE Lookup Multi-source CVE intelligence
  • ๐Ÿ’ฐ Bug Bounty Programs Live public scopes to search
  • ๐Ÿ’ผ Cybersecurity Jobs Roles from company career pages
  • ๐Ÿง‘โ€๐Ÿ’ป Security Researchers Community profiles and submissions
  • ๐ŸŽค Security Conferences Upcoming and past events
Browse all Security resources hub Freelance Security โ†’
My Resume
Freelance SecurityFreelance
New Security Researchers Join the directory - submit your profile for review Submit profile โ†’
← Security Tools View on GitHub

Mantra

Hunt down secrets and API keys leaked in JavaScript files.

ใ€Œ๐Ÿ”‘ใ€ About Mantra

The tool in question was created in Go and its main objective is to search for API keys in JavaScript files and HTML pages.

It works by checking the source code of web pages and script files for strings that are identical or similar to API keys. These keys are often used for authentication to online services such as third-party APIs and are confidential and should not be shared publicly.

By using this tool, developers can quickly identify if their API keys are leaking and take steps to fix the problem before they are compromised. Furthermore, the tool can be useful for security officers, who can use it to verify that applications and websites that use external APIs are adequately protecting their keys.

In summary, this tool is an efficient and accurate solution to help secure your API keys and prevent sensitive information leaks.

Help

Usage

Install

From go:

go install github.com/Brosck/mantra@latest

From source code:

git clone https://github.com/brosck/mantra
cd mantra
make
./build/mantra-amd64-linux -h

Results

Firebase API Key Leak: image

Buy me a coffee?

Press Escape to close the search panel.

Donate

Buy me a Coffee

Penetration Testing Services

penetration Testing Services

Web Application Security Quiz

Web Application Security Quiz

Daily Bug Bounty Writeups - Twitter

Daily Bug Bounty Writeups

Download our Latest Android Application

Guide for Penetration Testing

Daily Bug Bounty Writeups - Telegram

Daily Bug Bounty Writeups

Author

Piyush
Senior Product Security Engineer

Ethical Hacker || Penetration Tester || Gamer || Blogger || Product Security Engineer || AI Security

READ ARTICLE

Donate

Buy me a Coffee

Recent Posts

  • AI-Generated Code Security Bugs: A Vibe Coding Case Study
    AI-Generated Code Security Bugs: A Vibe Coding Case Study
    October 7, 2026/
    0 Comments
  • Cloud Misconfig Bounty Hunting in 2026: Open Buckets, Firebase, and Secrets
    Cloud Misconfig Bounty Hunting in 2026: Open Buckets, Firebase, and Secrets
    September 8, 2026/
    0 Comments
  • DevSecOps From Laptop to Production: A Practical Security Pipeline Guide
    DevSecOps From Laptop to Production: A Practical Security Pipeline Guide
    August 27, 2026/
    0 Comments

Follow Us

SecurityCipher

Practical security guides, vulnerability deep-dives, and hands-on resources for bug bounty hunters and penetration testers.

Useful Links

  • Security Checklists
  • Cybersecurity Jobs
  • Blogs
  • About
  • Contact
ยฉ 2026 Security Cipher. All rights reserved. Privacy Policy ยท Terms & Conditions