Free to use tools to enhance your cybersecurity skills and protect your digital life.
Paste a raw email header to reveal sender path, authentication results, and warning signs. Ideal for spotting phishing that looks real in the message body.
Create unique passwords and passphrases with client side randomness. Copy once and store it in your password manager for safer reuse.
Build memorable passphrases using wordlists. You control the word count and separators for a balance of strength and recall.
Check whether your browser is using encrypted DNS. Learn the steps to enable private DNS on Android and other platforms.
Paste a link to view its visible destination and basic signals before you click. Learn common redirect tricks and safer opening habits.
A printable checklist for travel and coffee shop work. Verify network names, use a VPN, and avoid logins that reveal sensitive information.
Use this tool to encode or decode sensitive text or files before sending across untrusted networks. Perfect for travel, coffee shops, or any public Wi-Fi scenario.
Generate UFW, iptables, or nftables rules with safe defaults, optional country blocking, and an admin-IP allowlist. Export and import profiles — all client-side.
Identify what matters most, assess real-world risks, and plan simple, practical fixes. Build and print your personal or project threat model in minutes.
Clean hidden data from photos, documents, and files before sharing. Protect your privacy by removing location, author, and device details with one click.
Generate file hashes to confirm authenticity, detect tampering, and validate integrity — all without uploading your data.
Generate secure QR codes and safely analyze existing ones to check for hidden redirects, phishing risks, and sensitive data exposure—all directly in your browser.
Discover your public IP address and learn about its location, ISP, and more, all without leaving your browser.
Perform DNS lookups to retrieve information about domain names, including IP addresses, mail servers, and more.
Create and test regular expressions interactively. Generate patterns for validation, search, data cleaning, parsing and more — all in your browser.
Learn if your email appears in known breaches. Follow our guidance to rotate credentials and enable multi factor authentication.
Measure your digital risk score interactively. Quickly assess vulnerabilities and receive actionable remediation steps.
Visualize your digital footprint by simulating how you are tracked online and identifying data exposure points.
Create unique, disposable MAC addresses to enhance privacy and prevent network tracking across different environments.
Create your PGP key pair: a private key for decryption and a public key for sharing, to enable secure, authenticated digital communication.
I build these to solve real problems. If you have an idea that would help protect your daily workflow, send a note and I will consider it for this page.