One of the most common security breach is an insecure password. We've come across many clients with the passwords, "password", or "Password123". Anything else other than that word password would have been more secure!
This article goes through some basic tips in making your passwords more secure.
Please keep in mind that this advice all comes from personal experience and I am by no means a security consultant. Please also refer to the Joomla Documentation on Security.
Try and make sure that you're using a password that contains at least one number, one lowercase letter, one upper case letter and one non standard character.
Of course there are password cracking machines out there that can brute force attack your site to find out the password but lets try and make it as hard as possible.
Try this Joomla Password Generator:
Another tip is to not use the same password on all of your websites. The last thing you’d want is for your Internet banking password to be the same as your Joomla website password.
If your site gets hacked then you might as well give the hacker your bank details too. It isn’t really that extreme but it could happen.
Having different passwords for all of your sites can get difficult to remember but of course you can use password reminder services such as 1Password or RoboForm