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Claude

Version 1.0.69 View in Chrome Web Store

Last scanned: about 2 hours ago

Extension Details

Developer: Anthropic

Rating: 2.7 ★ (838 ratings)

Users: 6,000,000

Context-Aware Verdict

CRITICAL

Overall Risk

Trust Factors:

The extension is developed by Anthropic, a reputable AI company known for Claude AI assistant, which adds credibility. However, the 6 million user base is offset by a concerning low rating of 2.7 stars from 838 reviews, suggesting significant user dissatisfaction or functionality issues. The legitimate company backing doesn't eliminate the security concerns posed by the extensive permissions.

Concerns:

The permission set is extremely broad and invasive for an AI assistant extension. The debugger permission is particularly alarming as it allows manipulation of other extensions and browser debugging capabilities. The combination of all_urls host permissions with broad content script injection creates a surveillance-capable extension that can monitor and interact with every website you visit. The identity permission coupled with downloads access could enable data exfiltration. The webNavigation permission allows complete browsing behavior tracking. Many of these permissions appear unnecessary for a typical AI chat interface.

Recommendations:

Given the critical risk level, strongly consider running this extension in a completely separate Chrome profile dedicated solely to Claude interactions. Alternatively, use Claude directly through their website rather than the extension. If you must use the extension, regularly audit what data it might be accessing and consider using it only when specifically needed, disabling it otherwise. Monitor your browser's security settings and be cautious about sensitive activities while the extension is active.

Findings

HIGH

Broad Content Script Injection

This extension can inject scripts into any website. This means it could potentially read sensitive data, modify website content, or steal credentials.

HIGH

Broad Host Permissions

This extension has broad host permissions allowing it to access many or all websites. This could potentially be used to steal sensitive data or track browsing activity.

HIGH

High-Risk Permission: debugger

This extension has the debugger permission. Can debug and manipulate other extensions/apps. This could potentially be used maliciously to compromise security or privacy.

HIGH

High-Risk Permission: downloads

This extension has the downloads permission. Can download files and access download history. This could potentially be used maliciously to compromise security or privacy.

HIGH

High-Risk Permission: identity

This extension has the identity permission. Can access your identity information. This could potentially be used maliciously to compromise security or privacy.

HIGH

High-Risk Permission: tabs

This extension has the tabs permission. Can access browser tab information and manipulate tabs. This could potentially be used maliciously to compromise security or privacy.

HIGH

High-Risk Permission: webNavigation

This extension has the webNavigation permission. Can track your web navigation. This could potentially be used maliciously to compromise security or privacy.

MEDIUM

Medium-Risk Permission: activeTab

This extension has the activeTab permission. Can access the active tab when clicking the extension icon.

MEDIUM

Medium-Risk Permission: notifications

This extension has the notifications permission. Can show notifications.

MEDIUM

Medium-Risk Permission: storage

This extension has the storage permission. Can store data locally.

MEDIUM

Medium-Risk Permission: unlimitedStorage

This extension has the unlimitedStorage permission. Can store unlimited data locally.

Security Analysis Details

Required Permissions:

sidePanel
storage
activeTab
scripting
debugger
tabGroups
tabs
alarms
notifications
webNavigation
declarativeNetRequestWithHostAccess
offscreen
nativeMessaging
unlimitedStorage
downloads
identity

Host Permissions:

<all_urls>

Content Security Policy:

extension_pages: script-src 'self'; object-src 'self'; connect-src 'self' https://api.anthropic.com wss://api.anthropic.com https://claude.ai https://platform.claude.com https://api.segment.io https://*.segment.com https://*.ingest.us.sentry.io https://api.honeycomb.io https://browser-intake-us5-datadoghq.com wss://bridge.claudeusercontent.com wss://bridge-staging.claudeusercontent.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:;

Embedded URLs (125 total):

https://github.com/jnordberg/gif.js	http://www.w3.org/2000/svg
https://clients2.google.com/service/update2/crx	https://claude.ai/
https://api.anthropic.com	https://claude.ai
https://platform.claude.com	https://api.segment.io
https://api.honeycomb.io	https://browser-intake-us5-datadoghq.com
https://example.com	https://api.vimeo.com/videos/
https://www.googleapis.com/youtube/v3/videos?id=	https://github.com/mermaid-js/mermaid/releases/tag/v11.0.0
https://tailwindcss.com	https://github.com/mermaid-js/mermaid/issues.
https://docs.expo.dev/versions/latest/sdk/expo/#expofetch-api	https://github.com/anthropics/anthropic-sdk-typescript#streaming-responses
https://github.com/anthropics/anthropic-sdk-typescript#long-requests	http://www.w3.org/1999/xlink
http://www.w3.org/1998/Math/MathML	http://www.w3.org/1999/xhtml
https://chromewebstore.google.com/detail/claude/dngcpimnedloihjnnfngkgjoidhnaolf	https://nextjs.org/docs/messages/invalid-images-config
https://nextjs.org/docs/messages/next-image-missing-loader	https://www.google.com/s2/favicons?domain=
https://mcp-server-gcal-586545259222.us-central1.run.app/sse	https://mcp-server-gcal-586545259222.us-central1.run.app/mcp
https://gcal.mcp.claude.com/mcp	https://calendarmcp.googleapis.com/mcp/v1
https://mcp-server-gmail-110131437935.us-central1.run.app/sse	https://mcp-server-gmail-110131437935.us-central1.run.app/mcp
https://gmail.mcp.claude.com/mcp	https://gmailmcp.googleapis.com/mcp/v1
https://api.anthropic.com/mcp/gdrive/sse	https://api.anthropic.com/mcp/gdrive/mcp
https://drivemcp.googleapis.com/mcp/v1	https://drivemcp.googleapis.com/mcp
https://mcp-server-gdrive-532483229523.us-central1.run.app/sse	https://slack.mcp.ant.dev/sse
https://gcal.mcp.staging.ant.dev/mcp	https://gmail.mcp.staging.ant.dev/mcp
https://microsoft365.mcp.claude.com/mcp	https://www.microsoft.com/microsoft-365
https://www.google.com/s2/favicons	https://www.gstatic.com
https://t0.gstatic.com	https://github.com/syntax-tree/hast-util-to-jsx-runtime
https://docs.datadoghq.com	https://www.datadoghq-browser-agent.com
https://www.datad0g-browser-agent.com	https://d3uc069fcn7uxw.cloudfront.net
https://d20xtzwzcl0ceb.cloudfront.net	https://github.com/uuidjs/uuid#getrandomvalues-not-supported
https://support.claude.com/en/articles/12012173-getting-started-with-claude-for-chrome#h_91c6e5a1ee	https://claude.ai/settings/integrations
https://claude.ai/upgrade?hide_free=true	https://prosemirror.net/docs/guide/#generatable
https://support.anthropic.com/en/articles/8525154-claude-is-providing-incorrect-or-misleading-responses-what-s-going-on	https://support.claude.com/en/articles/10023548-how-long-do-you-store-my-data
https://claude.ai/settings/connectors	https://claude.ai/api/desktop/darwin/universal/dmg/latest/redirect
https://claude.ai/download	https://claude.com/product/cowork
https://chromewebstore.google.com/	https://claude.ai/settings/usage
https://www.anthropic.com/legal/aup	http://www.w3.org/XML/1998/namespace
https://docs.google.com/forms/d/e/1FAIpQLSdLa1wTVkB2ml2abPI1FP9KiboOnp2N0c3aDmp5rWmaOybWwQ/viewform	http://www.w3.org/2000/xmlns/
https://github.com/markedjs/marked.	https://github.com/mermaid-js/mermaid
https://claude.com/form/anthropic-content-reporting	https://cdn.segment.com
https://cdn.segment.	https://nextjs.org/docs/messages/public-next-folder-conflict
https://nextjs.org/docs/messages/404-get-initial-props	https://nextjs.org/docs/messages/gssp-export
https://nextjs.org/docs/messages/gssp-component-member	https://nextjs.org/docs/messages/non-standard-node-env

Page 1 of 2

Raw Manifest

{
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjU1XnLPoasGVmZU42K3h6S+sQhkogfcoLPbIcrWH5Oo8QoInBIugkew/7cWaEFySyQrkaEBe1fjeS/rlAqd3r778dKcTvDZcXmj0VVX0Fi1i8tnkarurceGKGdVxfkL7e30nwfgwoPxj3H8OQbsbxFcBWGVtcFekmdpiyaxwz6o4yXIWColfAxh9K2yToOZkoAS5GvgGvTexiCh1gYy++eFdk6C61mcFsyDdoGQtduhGEaX0zZ9uAW1jX4JTPmHV3kEFrZu/WVBl7Obw+Jk/osoHMdmghVNy6SCB8/6mcgmxkP9buPrNUZgYP6n0x5dqEJ2Ecww/lb1Zd4nQf4XGOwIDAQAB",
  "name": "Claude",
  "icons": {
    "128": "icon-128.png"
  },
  "action": {
    "default_title": "Open Claude"
  },
  "storage": {
    "managed_schema": "managed_schema.json"
  },
  "version": "1.0.69",
  "commands": {
    "toggle-side-panel": {
      "description": "Toggle Claude side panel",
      "suggested_key": {
        "mac": "Command+E",
        "default": "Ctrl+E"
      }
    }
  },
  "background": {
    "type": "module",
    "service_worker": "service-worker-loader.js"
  },
  "update_url": "https://clients2.google.com/service/update2/crx",
  "description": "Claude in Chrome (Beta)",
  "permissions": [
    "sidePanel",
    "storage",
    "activeTab",
    "scripting",
    "debugger",
    "tabGroups",
    "tabs",
    "alarms",
    "notifications",
    "webNavigation",
    "declarativeNetRequestWithHostAccess",
    "offscreen",
    "nativeMessaging",
    "unlimitedStorage",
    "downloads",
    "identity"
  ],
  "options_page": "options.html",
  "content_scripts": [
    {
      "js": [
        "assets/content-script.ts-Bwa5rY9t.js"
      ],
      "run_at": "document_end",
      "matches": [
        "https://claude.ai/*",
        "https://*.claude.ai/*"
      ]
    },
    {
      "js": [
        "assets/accessibility-tree.js-D8KNCIWO.js"
      ],
      "run_at": "document_start",
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true
    },
    {
      "js": [
        "assets/agent-visual-indicator.js-Ct7LqXhp.js"
      ],
      "run_at": "document_idle",
      "matches": [
        "<all_urls>"
      ],
      "all_frames": false
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "manifest_version": 3,
  "externally_connectable": {
    "matches": [
      "https://claude.ai/*",
      "https://*.claude.ai/*"
    ]
  },
  "minimum_chrome_version": "116",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src 'self' https://api.anthropic.com wss://api.anthropic.com https://claude.ai https://platform.claude.com https://api.segment.io https://*.segment.com https://*.ingest.us.sentry.io https://api.honeycomb.io https://browser-intake-us5-datadoghq.com wss://bridge.claudeusercontent.com wss://bridge-staging.claudeusercontent.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:;"
  },
  "web_accessible_resources": [
    {
      "matches": [
        "https://*.claude.ai/*",
        "https://claude.ai/*"
      ],
      "resources": [
        "assets/content-script.ts-Bwa5rY9t.js"
      ],
      "use_dynamic_url": false
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "assets/accessibility-tree.js-D8KNCIWO.js",
        "assets/agent-visual-indicator.js-Ct7LqXhp.js"
      ],
      "use_dynamic_url": false
    }
  ]
}

by ✦ Astarte

Claude

Extension Details

Context-Aware Verdict

Findings

Security Analysis Details

Required Permissions:

Host Permissions:

Content Security Policy:

Embedded URLs (125 total):

Raw Manifest

Detections

Manifest Findings