Check if your account has been hacked in a data breach
"Breach" is an incident where your data is public for anyone to misuse
How To Delete Your Tumblr Account
Slides & Instructions
Deleting your Tumblr account is easy. Login to your account from a computer browser and follow the steps for deletion.
Click here to open Tumblr. If you're already logged in, doing so will open your Tumblr homepage
Click the profile icon on the top right
Click settings from the drop down menu
Click delete account at the bottom of the page
Enter your email and password and click delete everything
Questions & Answers
Before you do anything, please be aware that deletions cannot be undone. Once you delete your blog or account, its contents are gone forever. Your primary blog will be deleted. Your secondary blogs that you are the only member of will be deleted, and you'll be removed from any group blogs you are a member of. Your blog URL will be released, and can be used by anyone who's looking to create a blog. You can create a new account using the same email address you used last time. At this time, you can only delete your account / primary blog from a browser (on your computer or in a mobile browser), rather than in the app.