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Security

4 ZeroUtil articles cover security, published between April 2026 and May 2026. Each one is written to explain the mechanism rather than list steps, and links to the free browser tools that do the job.

These articles sit alongside the security & privacy toolset.

Article title card. Six small grey dots standing for a typed password beside a set of amber concentric rings, with the line: nothing to type, nothing to steal
Security & Privacy

Passkeys vs Passwords: How WebAuthn Actually Replaces the Password

How passkeys, FIDO2 and WebAuthn actually work, why origin scoping ends phishing, and the tradeoffs around recovery and syncing that still bite.

Article title card. A shield with its right half filled in amber, with the line: what leaves the machine, and when
Security & Privacy Guide

The Online Privacy Guide: Practical Threat Models for Browser-Based Work in 2026

Threat models worth naming, the thirty-second check that beats any privacy policy, and an honest list of which of our own tools upload your file.

A pink sticky note handwritten with the word password and the digits 123456, stuck to a black laptop keyboard against a blue background
Security & Privacy

Password Strength in 2026: What Length and Character Sets Actually Buy You

Entropy done honestly, NIST's current 15-character floor, and measured GPU cracking speeds showing the hash function matters more than the extra characters.

Article title card. Three segments in a row, the last one amber and labelled sig, with the line: the third part is the only one that matters
Security & Privacy

JWT Authentication Mistakes That Keep Appearing in Production

Algorithm confusion, weak secrets, missing expiry, and the library defaults that quietly changed underneath all the advice written about them.

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