Head over to haveibeenpwned.com to find out! This website shines a spotlight on how the large amount of data breaches are affecting us personally. When you enter your email address the website will look through records on hacked accounts and points out which of them affect you. Being on the list means that the information stored on a hacked site (possibly including the password in use at the time of the hack) should be considered in the public domain.
Looking up your own information makes for a jarring experience: it shows that many of our personal accounts have been compromised, sometimes years ago. And if you are like many technology users who try to “keep it simple” by using the same password on multiple sites you will be shocked to realize that this practice may have possibly exposed additional information to anyone who can now try your (now public) logins on other sites you utilize.