QuillBot: AI Writing and Grammar Checker ToolSecurity Analysis

Extension has cookie access and sends data to external servers — potential session token theft.

Extension has access to all sites and captures keyboard input — behavior consistent with a keylogger.

Uses eval() to execute dynamic code, a common technique for obfuscation and code injection.

Dynamically sets a script's src attribute to load external code at runtime.

Dynamically creates script elements, potentially loading external malicious code.

Creates functions from strings, similar to eval(), often used to hide malicious code.

Listens for keyboard events, a common technique used by keyloggers.

Accesses browser cookies programmatically, could be used to steal session tokens.

Uses eval() to execute dynamic code — a common vector for code injection.

Creates a function from a string (new Function()), similar to eval().

JavaScript files are accessible to ALL websites. Any page can load and interact with these scripts, enabling web→extension attacks.

Uses XMLHttpRequest to make network calls.

Decodes base64 data, commonly used to hide malicious payloads.

Opens WebSocket connections, which can be used for persistent command-and-control channels.

Dynamically creates iframe elements, which can be used to load external content or hide malicious UI.

Sends messages via Chrome runtime, could communicate with external services.

Makes HTTP requests to external servers, may be used for data exfiltration.

Modifies window.location to redirect the user, potentially to phishing or malicious pages.

Opens a WebSocket connection, which can be used for persistent C2 channels.

JavaScript file could not be parsed. May contain obfuscated or minified code.

Line exceeds 5000 characters (entropy: 5.912681360966048)

Web-accessible resources use <all_urls> or wildcard patterns, exposing resources to every website.

Content script matches <all_urls>, executing on every website the user visits.

Sets innerHTML directly, which can lead to XSS if used with untrusted data.

Creates a Web Worker, which runs code in a separate thread — can be used for background computation or crypto mining.

Encodes data to base64, may be used for data exfiltration.

Reads or writes to localStorage, which may contain sensitive site data.

object-src is not set to 'none'. Plugins like Flash can be embedded, which may allow code execution.

Extension accepts messages from 5 external pattern(s). Verify these are trusted origins.

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