Google Chat scans messages with external users to help protect you from spam, phishing, and malware. Internal conversations within your organization are not scanned. You can disable the external scans if you turn off external chat.
In addition, when any users send or receive files in Chat, the files are automatically scanned for viruses. If you allow external chat, images uploaded in external conversations may also be scanned for Child Sexual Abuse Material (CSAM).
Learn more
For details, make sure you're signed in with a Google Workspace Account and then visit Learn how Google Chat protects you.
Note: If you view 'Learn how Google Chat protects you' when signed in with a personal Google Account (or when not signed in to any Google Account), you won't see the information that applies only to Chat with people outside your organization.
