It seems like data breaches at big companies happen quite regularly now days. New stories keep appearing about how the account details of millions of users have been shared online. Have you ever wondered if one of your accounts was part of this? Do you use the same password for more than one account?
If you do, then you really should take a look to see if you have been part of one of the public data breaches. The people at the website Have I Been Pwned? have complied a list of these breaches. All you need to do is enter your username/email and they will let you know if it was part of a breach and if it was what was leaked out. From there you need to decide what to do. If your password was leaked then it is probably time to change that password on all the sites that you use it.