✨ ExtensionTotal is now part of Koi — better UX, more marketplace coverage, deeper risk insights.

    KOIDEX

    Powered byKOI

    Quickly detect and eliminate risks in any software your teams rely on - extensions, packages, apps, and models.

    Supported Marketplaces

    Visual Studio Code iconVisual Studio Code
    JetBrains Marketplace iconJetBrains Marketplace
    Chrome Web Store iconChrome Web Store
    Edge Add-ons iconEdge Add-ons
    Firefox Add-ons iconFirefox Add-ons
    Cursor iconCursor
    and more...
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    Decorative spear
    Newly caught malware in the wild

    Catch of the day

    Latest publications

    When Both Marketplaces Fall: The Cross-Platform Extension Malware Campaign

    When Both Marketplaces Fall: The Cross-Platform Extension Malware Campaign

    One threat actor. Two major marketplaces. Nearly 3 million installs. The numbers may have been faked — but the backdoors they dropped were very real.

    Google and Microsoft Trusted Them. 2.3 Million Users Installed Them. They Were Malware.

    Google and Microsoft Trusted Them. 2.3 Million Users Installed Them. They Were Malware.

    Our investigation of a single "verified" color picker exposed a coordinated campaign of 18 malicious extensions that infected a massive 2.3 million users across Chrome and Edge.

    Marketplace Takeover: How We Could've Taken Over Every Developer Using a VSCode Fork; Putting Millions at Risk

    Marketplace Takeover: How We Could've Taken Over Every Developer Using a VSCode Fork; Putting Millions at Risk

    We discovered a critical vulnerability in open-vsx.org, the open-source VS Code extensions marketplace powering popular VSCode forks like Cursor, Windsurf and VSCodium, used by over 10,000,000 developers

    Agentic based risk engine

    We don't guess, we analyze what software is actually made of. Extensive, agentic risk analysis that sees past labels to real composition and behavior.

    Agentic risk engine visualization

    With Koi, you can enjoy the riches of the marketplace on your own terms.

    Discovery icon

    Discovery

    Track and manage every piece of software the moment it enters your ecosystem.

    Guardrails icon

    Guardrails

    Governance icon

    Governance

    Remediation icon

    Remediation

    Koi platform interface showing discovery management