It’s hard to know for sure that you’ve been hacked until it’s too late, but there are web services that may be able to help you find out sooner.
Heartbleed, the massive flaw in web encryption recently made public, is just one of the unending stream of vulnerabilities that enables hackers to steal personal details and passwords from companies with which you do business.
Of recent, a number of websites have opened up shop to alert users when such attacks happen. For example,shouldIchangemypassword.com allows you to enter in an email address to see if hackers have compromised it.