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103 Articles
Security & Privacy
Articles filed under Security & Privacy.
Showing 64–84 of 103 articles
🔒 Security & Privacy
How to Check Email Blacklist Lookups
Use an email blacklist check to build DNSBL queries for a mail server IP, with dig/nslookup commands and return-code meanings.
🔒 Security & Privacy
How to Check What Type of IP Address You Have
Validate an IP address's format and identify whether it's public, private, or reserved, with an honest explanation of how real blacklist checks work.
📜 Security & Privacy
How to Decode a PEM SSL Certificate's Fields
Paste a PEM-encoded X.509 certificate to decode its subject, issuer, validity dates, serial number, and signature algorithm, without command-line tools.
🔒 Security & Privacy
How to Encrypt Text With a Public Key
Use a text encryptor to encrypt messages with RSA public keys, hybrid AES-256-GCM encryption, and PEM key generation in your browser.
🔐 Security & Privacy
How to Generate a Genuinely Strong Random Password
Generate strong, random passwords with control over length, uppercase, lowercase, numbers, and symbols, plus a strength estimate, for every account that needs one.
🌱 Security & Privacy
How to Generate a Random Word-Based Seed Phrase
Generate a cryptographically random, memorable word passphrase of 12 to 24 words, entirely offline in your browser, for testing or educational use.
🔑 Security & Privacy
How to Generate a Strong, Memorable Passphrase
Generate strong, memorable multi-word passphrases with a custom word count, separator, optional number, and an entropy estimate, instead of a hard-to-recall jumble.
🔒 Security & Privacy
How to Generate and Test TOTP Codes
Use a TOTP code generator to inspect time-based one-time passwords, otpauth URIs, algorithms, digit counts, and clock drift.
🔐 Security & Privacy
How to Generate and Verify a Bcrypt Password Hash
Generate a bcrypt password hash with an adjustable cost factor, or verify a password against a hash, without pasting real credentials into a random site.
🔒 Security & Privacy
How to Inspect and Clear LocalStorage
Use a Local Storage inspector to browse site storage data, review saved keys, and clear browser-only data without uploading anything.
🔒 Security & Privacy
How to Share a Self-Destructing Secure Note
Use a secure note burner to create private self-destructing notes encoded in the URL hash, with no uploads or account required.
🔒 Security & Privacy
How to Strip Identifying Metadata From Files
Use a metadata scrubber to remove identifying metadata from files in your browser before sharing them publicly or externally.
📜 Security & Privacy
How to Write a Privacy Policy for a Small Website
Generate a starting privacy policy from your business details and site features — cookies, analytics, ads, and email collection — before you launch a new site.
🔒 Security & Privacy
What Is a DNS Leak and How Do You Check for One?
Understand what a DNS leak actually is, why it happens even with a VPN turned on, and the step-by-step way to test for one and fix it if you find it.
🛡️ Security & Privacy
How to Check a URL's Structure for Red Flags Offline
Check a URL's structure against common red flags, with honest hand-verified notes for a few reference domains — no live threat-database call is made.
🕵️ Security & Privacy
How to Check What Your Browser Reveals About You
See the user agent, screen, timezone, language, and canvas fingerprint data any website can read from your browser, all displayed locally with nothing sent anywhere.
🔐 Security & Privacy
How to Decode a 2FA Authenticator QR Code
Read the account details hidden inside an otpauth:// QR code or URI and preview the live TOTP codes it generates, without installing a new authenticator app first.
🍪 Security & Privacy
How to Draft a Cookie Policy for Your Website
Generate a customizable cookie policy draft based on the cookie categories your site actually uses, as a starting point before your own legal review.
🔐 Security & Privacy
How to Encode and Decode Text With ROT13
Encode or decode text with the classic ROT13 letter-shift cipher, updated live as you type, for spoiler-hiding and lightweight text obfuscation.
🔒 Security & Privacy
How to Encrypt Text With AES-256 in Your Browser
Encrypt or decrypt sensitive text with AES-256-GCM and a passphrase, using your browser's native Web Crypto API so nothing is ever sent to a server.
🔒 Security & Privacy
How to Password-Protect a File With Real Encryption
Encrypt or decrypt a file with a password using AES-256-GCM and PBKDF2 key derivation, entirely in your browser, without files ever leaving your device.