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🕵️ Confusable Handle Detector
High-Stakes Handle Security In an era of sophisticated social engineering, a username that looks like "apple" might actually contain a Cyrillic "а" or a hidden zero-width joiner.
$5
🕵️ Confusable Handle Detector
Example session with this skill installed
Check if the handle "pаypal" is spoofed or contains any suspicious characters.
- Read your context and instructions
- Compiled the confusable handle detector
- Generated the UI component
Findings: [HIGH]
- Rule: homoglyph-detected (ID: CH04)
- Evidence: 'а' (U+0430) is Cyrillic Small Letter A, visually identical to Latin 'a'.
Remediation
Flag as high-risk spoofing attempt. Recommend blocking handle registration to prevent brand impersonation.
confusable-handle-detector.tsx
TSX · React component
Example file from a real run - the skill writes it into your workspace.
Connects securely to your tools. The creator never sees your data.
What you get
About this skill
High-Stakes Handle Security
In an era of sophisticated social engineering, a username that looks like "apple" might actually contain a Cyrillic "а" or a hidden zero-width joiner. The Confusable Handle Detector is a specialized security tool designed for developers, community managers, and security researchers to audit strings for Unicode-based spoofing attempts.
What it does
This skill performs deep inspections on handles, brand names, and text lists to identify:
- Invisible Characters: Zero-width spaces and joiners that hide in plain sight.
- Homoglyphs: Look-alike characters from different scripts (e.g., Latin 'o' vs. Greek 'ο').
- Directional Overrides: RTL/LTR markers used to flip the display order of characters.
- Mixed-Script Detection: Identifying suspicious script switching within a single word.
Why use this skill
Writing your own regex to catch every Unicode edge case is error-prone and time-consuming. This skill leverages a pre-built Python scanner and a curated reference library to provide instant, structured auditing. It moves beyond simple "Is this valid?" checks to "Is this deceptive?", providing actionable remediation snippets that help you explain risks to users or stakeholders without sounding alarmist.
The Output
Each scan produces a detailed report covering the scope inspected, a categorized list of findings by severity, and specific remediation advice based on JustHandled Labs' audit checklist.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
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