#Cybersecurity

TOTP Two-Factor Authentication Guide: otpauth URI, Algorithms, and Local Debugging

How RFC 6238 TOTP works: algorithms, digits, period, otpauth URIs, countdown windows, and debugging 2FA with a browser-local generator.

Password Strength Checker: Evaluate and Improve Passwords

Length, charset, weak-pattern penalties, and effective entropy: check passwords locally in the browser, then link to the generator and bcrypt storage.