For an extra level of privacy, secondary blogs (including group blogs) can be password protected, requiring a password to view the blog. The blog's owner or admin can enable password protection, and set or change a password from the blog's Settings page.
Here's what happens when you password protect a blog:
- The blog cannot be followed.
- Posts from the blog cannot be liked or reblogged.
- The blog will not appear in Tumblr search results.
- Only members of a password-protected group blog can view it in the mobile apps. If you're not a member, you won't be able to view the blog in the apps.
- Non-members can view the password-protected blog in a web browser by navigating to its URL (blogname.tumblr.com) if they know the blog's password.
- The blog theme can still be customized like any other blog, but it will only be seen after entering the password.
To password protect a secondary blog:
- Click "Settings" under the account menu at the top of the dashboard.
- Click your secondary blog name in the menu on the right side.
- Scroll to the bottom of the blog settings page and enable “Password protect this blog.”
- Type a new password for the blog and hit enter. Please note the password is set once it's entered; you will see no confirmation.
- If you've forgotten the password for the blog, you may set a new one by repeating the above steps.
Password protection is only available for secondary blogs; you can't password protect the primary blog on your account. Check out this article for more information on the differences between primary and secondary blogs. You can also check out other privacy options available here.