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Free Cyber Security Tools

Free Cyber Security Tools and Checklists

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Quick answer: 4 free cyber security tools and checklists. They run in your browser and need no sign-up.

Why these tools

Why

Most attacks start with small mistakes: a weak password, a fake link, an old plugin. These tools help you catch them in minutes.

What

There are 2 browser tools and 2 checklists. None of them send your data anywhere.

How

  1. Pick the tool for your problem from the list below.
  2. Follow the steps on that page.
  3. Fix anything marked red.
  4. Come back every month, or after any warning.

Example, step by step

  1. Sunil gets an SMS link about his "blocked" SBI account.
  2. He opens the phishing link checker and pastes the link.
  3. It shows "brand name in the wrong place" and a risky ending.
  4. He deletes the SMS and opens the official YONO app instead.

All free tools (10)

  1. Password Strength Checker

    Test length, variety, common passwords and crack time. Runs 100% in your browser.

  2. Is This Link Phishing?

    Paste a link to spot lookalike letters, fake brand names, shorteners and more. Plus a checklist.

  3. Website Security Checklist

    23 easy steps you can tick online, print or download as a PDF.

  4. Is My Website Hacked?

    10 safe, read-only commands with sample output and what each one means.

  5. Scam Message / UPI-SMS Checker

    Paste an SMS or WhatsApp text to spot KYC, OTP, lottery and urgency tricks. Runs in your browser.

  6. Email Header Analyzer

    Paste full headers to see SPF, DKIM, DMARC and Return-Path vs From. Nothing leaves your browser.

  7. Password and Passphrase Generator

    Make a strong password or passphrase with crypto.getRandomValues. Stays in your browser.

  8. Data Breach Password Check

    See if a password shows up in known breaches. Only 5 hash characters leave your browser (HIBP).

  9. Security Headers Checker

    Paste curl -I output to spot missing HSTS, CSP and related headers. Local only.

  10. QR Code Safety Checker

    Decode a QR on your device, see the URL, and spot phishing tricks before you open it.

Frequently asked questions

Are these cyber security tools free?

Yes. All tools and checklists on this page are free and need no sign-up.

Do the tools send my data to a server?

No. The checkers run in your browser with JavaScript. Checklist ticks are saved only in your own browser.

Who made these tools?

Ravindra Bagale, a trainer who teaches cyber security, AWS and DevOps. They go with the free Cyber Security course on this site.

  1. Free Cyber Security course
  2. 22. Password Attacks
  3. 27. Social Engineering Awareness
  4. 49. Cheat Sheets