AI Grammar Checker & Paraphraser – LanguageToolSecurity Analysis

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 creates script elements, potentially loading external malicious code.

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

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

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

Decodes base64 data, commonly used to hide malicious payloads.

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

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.

Intercepts form submissions, could capture login credentials.

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

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

Fetches external URL: https://languagetool.org/webextension/init

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

Line exceeds 5000 characters (entropy: 5.138118909260095)

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.

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

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.

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

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

background.js

content.js

changelog/changelog.js

options/options.js

popup/popup.js

feedbackForm/feedbackForm.js

toolbox/toolbox.js

trial/trial.js

validator/validator.js