Stealing thousands of passwords and personal data was undoubtedly an attack on a grand scale .... the good news is that hackers have not used their accounts for fraudulent purposes, but to demonstrate the limited validity of the safety systems on Yahoo!
I do not know if Yahoo has problems with the system security (other accounts have been violated, such as Gmail, Hotmail etc. ..), but I know that often people use simple passwords and insecure!
you must change your password immediately!
to verify if your account has been stolen please sign here: