What to do if your ESP gets hacked

A couple of major online brands have had to send communications informing users that their data had been comprised, and in one instance it has been confirmed it was a breach at their email marketing service provider.

This is going to happen more

Due to SPAM filters getting more and more sophisticated it’s becoming less effective to just create emails to SPAM (marc@ marcus@ mark@ etc) so those pesky spammers are turning to hacking to get hold of email addresses. The value of email databases is often underestimated by marketers, spammers on the other hand know the value and aren’t afraid to “monetise it”.

Email marketing software providers have to have robust infrastructure, as does any organisation which handles customer data, that said NO SYSTEM IS 100% hacker proof, so this will happen more.
What you need to do about it