Yahoo, formerly an online services behemoth, is now beleaguered by a myriad of issues. Among the most recent of which has been the revelation that Yahoo suffered the largest ever data breach.
To add to its initial security inadequacies, Yahoo failed to notify its users of the breach - http://fortune.com/2016/09/23/yahoo-is-sued-for-gross-negligence-over-huge-hacking/
As well as Verizon - http://money.cnn.com/2016/09/22/technology/verizon-yahoo-data-breach/index.html
And the SEC - https://www.washingtonpost.com/news/the-switch/wp/2016/09/28/could-yahoo-be-in-trouble-with-the-sec/
To make matters worse news reports now reveal that Yahoo secretly monitored ALL emails on behalf of the US government. Something that its competitors (Microsoft and Google) claim not to have done.
https://www.theguardian.com/technology/2016/oct/04/yahoo-secret-email-program-nsa-fbi
Yahoo has justifiably been described as "a toxic surveillance liability" as a result of its behaviour. The right to privacy is recognized by the UNHCR, individuals have a right to private communication.
Yahoo isn't as popular as it once was and has been shedding users for years as a result of peculiar design and implementation decisions. The latest news cycle has lead to yet another mass exodus away from Yahoo services, here is how to make a clean break from Yahoo mail:
Close your Yahoo account
Go to the "Terminating your Yahoo account" page. - If you use a phone number to sign in, visit the alternative account termination page instead.
Read the info under "Before continuing, please consider the following information."
Confirm your password. - Forgot your password? - Recover it with the Yahoo Sign-in Helper.
Click Terminate this Account.
https://help.yahoo.com/kb/SLN2044.html
Courtesy of Afritechnet - https://afritechnet.blogspot.com/2016/10/delete-yahoo-account.html