Evernote Web ClipperSecurity 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.

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

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

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

Dynamically creates script elements, potentially loading external malicious code.

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

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

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

Extension tracks open tabs and communicates with external servers — potential browsing surveillance.

Decodes base64 data, commonly used to hide malicious payloads.

Uses XMLHttpRequest to make network calls.

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

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

Uses document.write() which can inject arbitrary HTML/scripts into pages.

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

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

Line exceeds 5000 characters (entropy: 5.4921737402116095)

This extension does not define a Content Security Policy. A CSP helps prevent XSS and code injection attacks.

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

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

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

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