Probably the largest security breach ever has been reported by Yahoo.
The information may have included names, email addresses, telephone numbers, dates of birth and, in some cases, encrypted or unencrypted security questions and answers, Yahoo said.
I suggest changing any passwords on any Yahoo accounts you have immediately. If you have used the same username/password across various sites I recommend changing ALL of your passwords to prevent what is called credential stuffing where the hackers use your known username and password around many common sites around the Internet hoping to gain access to your banks, credit cards and social media accounts.
Keeping unique and strong passwords is a challenge. A recommendation for password managers – Dashlane –
This application allows you to store (encrypted) all of your passwords and have then securely autofilled on all of your websites. Should there be a security breach like Yahoo you can with one click change all of your passwords immediately. You don’t need to remember passwords anymore, you can also sync them across devices too e.g. Android or iPhone. Dashlane creates and uses strong passwords automatically keeping your accounts secure.