Google admitted it may have accidentally sent some users’ private videos to strangers after a bug impacted its Photos service.

While Google says less than 0.01 percent of users were affected, the user base of Google Photos is over one billion users. So 10 million people’s videos are at risk. Here’s the email Google sent to those affected accounts who used Google Takeout, a software service that allows Google Photos users to download their data:

We are writing to inform you of a technical issue that affected the Google ‘Download Your Data’ service for Google Photos between November 21, 2019 and November 25, 2019, when it was fixed:

Between November 21, 2019 and November 25, 2019, our records show you requested a Google ‘Download You Data’ export which included Google Photos content.

Unfortunately during this time, some videos in Google Photos were incorrectly exported to unrelated users’ archives. One of more videos in your Google Photos account was affected by this issue.

If you downloaded your data, it may be incomplete, and it may contain videos that are not yours.

The underlying issue has been identified and resolved. We recommend you perform another export of your content and delete your prior export at this time. We apologize for any inconvenience this may have caused. For further assistance, contact Google Support. Please ensure you are signed into the correct account when contacting support.
If you were one of the affected users in this breach, Google sent you one or more additional followup emails.