Delete Search History: What Goes and What Stays
Delete search history in your browser and only the local trail goes. What Google keeps in your account, what incognito really hides, and who still sees your searches.
Data removal
Getting entries taken down: search results, people-search sites, old accounts and the rights that back you up.
How to Permanently Delete Data (Emptying the Trash Is Not It)
To permanently delete data you need the right method per medium: overwrite a hard drive, secure-erase an SSD, factory-reset an encrypted phone, and know when to destroy.