SpashData, an online security company, released it's annual list of the Worst Passwords of 2015.  They examined more than 3.3 million leaked passwords and say these are the ones most likely to "expose anybody to being hacked or having their identities stolen." 

1. 123456

2. password

3. 12345678

4. qwerty

5. 12345

6. 123456789

7. football

8. 1234

9. 1234567

10. baseball

11. welcome

12. 1234567890

13. abc123

14. 111111

15. 1qaz2wsx

16. dragon

17. master

18. monkey

19. letmein

20. login

21. princess

22. qwertyuiop

23. solo

24. passw0rd

25. starwars

The folks at SplashData say using any of these can get you in trouble and you should change it immediately.