{
  "slug": "icloud-calendar",
  "name": "iCloud Calendar",
  "maker": "Apple",
  "category": "calendar",
  "verdict": "n",
  "answer": "No. Apple can read your iCloud Calendar, even with Advanced Data Protection on. Invites go out to other people as normal email.",
  "title": "Is iCloud Calendar encrypted? Events and invites",
  "description": "Apple can read your iCloud Calendar, even with Advanced Data Protection on, and invites go out as normal email. Checked at the source.",
  "parts": [
    {
      "key": "cal",
      "status": "n",
      "words": "Apple can read it",
      "note": "Apple says calendars are built on the CalDAV standard, which has no built-in end-to-end encryption, so Apple keeps the keys even with Advanced Data Protection.",
      "sources": [
        1
      ],
      "label": "Your events"
    },
    {
      "key": "invite",
      "status": "n",
      "words": "Apple can read it",
      "note": "Invitations go out by email, so the other person's provider can read them as well as Apple.",
      "sources": [
        1,
        2
      ],
      "label": "Invites to others"
    },
    {
      "key": "pq",
      "status": "x",
      "words": "Not yet",
      "note": "No post-quantum protection announced as of 25 October 2026.",
      "sources": [],
      "label": "Post-quantum"
    }
  ],
  "extra_parts": [],
  "keys": "Apple keeps them in its data centers, even if you turn on Advanced Data Protection.",
  "can_see": "Everything in your calendars, which Apple says it can hand over under a US search warrant, with or without Advanced Data Protection.",
  "business": null,
  "fix": null,
  "fix_line": null,
  "sections": [
    {
      "id": "is-icloud-calendar-end-to-end-encrypted",
      "q": "Is iCloud Calendar end-to-end encrypted?",
      "a": "No. Apple's iCloud security overview lists Calendars as encrypted in transit and on the server, with Apple holding the keys [1]. Apple explains that contacts and calendars are built on CalDAV and CardDAV, standards with no built-in support for end-to-end encryption [1]."
    },
    {
      "id": "does-advanced-data-protection-cover-calendars",
      "q": "Does Advanced Data Protection encrypt my calendar?",
      "a": "No. Advanced Data Protection raises the number of end-to-end encrypted iCloud data categories to 25, but Calendars, Contacts and iCloud Mail keep Apple as the key holder [1].\n\nApple's guidelines for US law enforcement say calendar content may be provided under a search warrant, with or without Advanced Data Protection [3]."
    },
    {
      "id": "are-icloud-calendar-invites-private",
      "q": "Are iCloud Calendar invites private?",
      "a": "Not from Apple, and not from your guests' email providers. When you add invitees on iCloud.com, Apple sends them invitation emails [2]. Those emails can be read like any other email by each guest's provider."
    }
  ],
  "sources": [
    {
      "title": "iCloud data security overview (published 5 January 2026)",
      "publisher": "Apple",
      "url": "https://support.apple.com/en-us/102651",
      "read": "2026-10-25"
    },
    {
      "title": "Invite people to a calendar event on iCloud.com",
      "publisher": "Apple",
      "url": "https://support.apple.com/guide/icloud/invite-people-to-an-event-mm6b1a805a/icloud",
      "read": "2026-10-25"
    },
    {
      "title": "Legal Process Guidelines: Government & Law Enforcement within the United States (October 2025)",
      "publisher": "Apple",
      "url": "https://www.apple.com/legal/privacy/law-enforcement-guidelines-us.pdf",
      "read": "2026-10-25"
    }
  ],
  "changes": [
    {
      "date": "2026-10-25",
      "text": "First published."
    }
  ],
  "related": [
    "google-calendar",
    "outlook-calendar",
    "icloud-mail",
    "icloud"
  ],
  "url": "https://isitencrypted.com/icloud-calendar/",
  "checked": "2026-10-25"
}