Password Manager vs 2FA: Do You Actually Need Both?
Both password managers and 2FA are recommended by every security expert. But what does each one protect against? And do you really need both? The answer is yes, here's why.
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In-depth guides, tips, and tutorials on two-factor authentication and online security.
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Adding 2FA to Your Web App: A Complete Developer Guide
A practical guide to adding two-factor authentication to any web application, covering UX design, security architecture, edge cases, and everything between first login and account recovery.
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How to Secure All Your Online Accounts: The Ultimate 2026 Guide
Most account compromises are preventable. This step-by-step guide covers every layer of account security from passwords and 2FA to breach monitoring and recovery planning.
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HTTP Basic Authentication: How It Works and When to Use It
Basic Auth is the simplest HTTP authentication scheme a username and password encoded in Base64. Learn how it works, its security limitations, and when it's appropriate to use.
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URL Encoding Explained: What It Is and Why It Matters for Developers
URL encoding converts special characters into a format safe for use in web addresses. Learn what it is, how percent-encoding works, and when you need to use it.
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2FA Backup Codes: What They Are and How to Store Them Safely
Backup codes are your safety net when you lose access to your 2FA device. Learn what they are, how to use them, and the best ways to store them so they're there when you need them.
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How QR Codes Work in Two-Factor Authentication
When you set up 2FA, you scan a QR code. But what's actually in it? Learn exactly what data QR codes encode for TOTP, how to read them, and how to generate your own.
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What Is Base32 Encoding? Why TOTP Uses It (Developer Explanation)
Base32 converts binary data into a set of 32 safe characters. It's why your 2FA secret looks like JBSWY3DPEHPK3PXP. Learn how it works and when to use it vs Base64.
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SHA-256 vs MD5: Which Hash Function Should You Use?
MD5 and SHA-256 are both hash functions, but they're not interchangeable. Learn the key differences, when each is appropriate, and why MD5 should never be used for security.
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