Hi This does not sound like an issue with Firefox for Android and we may not be able to help directly, but we can certainly provide you with some guidance. As a firest step, i would recomend contacting you email service provider and the providers of your other online accounts about changing your passwords and otehr security measures that could be put in place. When choosing passwords, you may wish to follow this [https://support.mozilla.org/en-US/kb/create-secure-passwords-keep-your-identity-safe guidance].