Proton Pass: Free Password ManagerSecurity Analysis

Extension intercepts network traffic and sends data externally — potential man-in-the-middle behavior.

Extension reads clipboard and communicates externally — potential credential or crypto address theft.

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

Dynamically creates script elements, potentially loading external malicious code.

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

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

Uses data URIs to execute code, bypassing content security policies.

Reads clipboard contents via the Clipboard API — can access copied passwords, crypto addresses, or sensitive data.

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

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.

JavaScript file could not be parsed and has high entropy. May contain obfuscated code.

Line exceeds 5000 characters (entropy: 5.2658402495553425)

JavaScript files are exposed as web-accessible resources. Matched websites can load and interact with extension scripts.

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.

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

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 2 external pattern(s). Verify these are trusted origins.