In the recent years several attacks on different customer systems became public (from Sony, Adobe etc. etc.) and it is sometimes hard to keep up with the different lists, which are on the web to figure out, whether your address was part of it.
I recently found a service offered by a guy called Troy Hunt calledwhich collects at least (currently) 9 of these lists into a database â€“ summing up to around 160 million accounts. You can easily start a query to the database to figure out, whether your account has been compromised. Interesting for businesses: Since a few days he offers the ability to query a whole domain to figure out which of your account has been compromised â€“ after proper validation of your ownership of the domain.
Probably something to look at.
- How to find out if any users in your domain have been compromised (zdnet.com)
- Find Out If Your Email Address Has Been Compromised in Any Major Hack Attack (technorms.com)
- [Web] Have I Been Pwned finds out if your account has been hacked or password leaked (dottech.org)
- How to Check if Your Password Has Been Stolen (theapptimes.com)