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    🕵️ Confusable Handle Detector

    1

    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.

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    🕵️ Confusable Handle Detector

    🕵️ 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

    Generated

    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

    Identify homoglyph-based brand impersonation attemptsAudit registration lists for hidden zero-width charactersDetect malicious Right-to-Left (RTL) character tricks in usernamesValidate brand name hygiene across global character sets

    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.

    ~30 seconds
    1. 1

      Download the ZIP

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    2. 2

      Unzip into your skills folder

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    3. 3

      Ask your agent to use it

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    Recently published to Agensi

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    Trust & safety

    Security scanned

    Verified clean 3 months ago

    • Passed all security checks, Safe to install

    Listed3 months ago

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