In short, YES.  Nobody wants to get hacked.  It takes time and money to get the site back to normal.  Most hosting providers do a fair job in keeping hackers away but a lot of the responsibility relies on you and your developer.  In most cases, a poor password is to blame OR a security vulnerability was found and exploited.

First thing you should do is use a very GOOD password.  Using your sons name or something related to you is a very poor idea.  You should include capital letters, lower case letters, numbers, and a punctuation sign.  It should be at least 8 characters - no less.  This is the first step is keeping hackers at bay.

Second, you should keep ALL your website software up-to-date.  Most software will release periodic patches or updates.  In some cases they are releasing new functionality.  But usually they are also fixing a security vulnerability.  There are too many sites where updates are not being performed.  It is giving a hacker an invitation to your site.

Third, implement some type of hacker prevention software. It should constantly monitor your site - 24/7.  We offer this type of service.

Fourth, keep a backup of your website.  If the site changes a frequently, you should be taking backups on a daily basis.

Keep in mind that if the site is your business, you should do everything you can to prevent it from having issues.  The first three steps can prevent most problems and the fourth gives you an out if the entire site has been corrupted.