How Long Does Yahoo keep history?

[seo.gops]

How Long Does Yahoo keep history?

[victoriasanders]

Yahoo's policy is to de-identify search user log data within 18 months of collection, with limited exceptions such as to meet legal obligations.

[chris123]

It will take a while for Yahoo to delete all of the data associated with your account after the account is deleted. Yahoo's Data Storage Policy says that your information will stay in its user registration database for approximately 90 days, And it stores some of your search data for up to 18 months.