As if to underscore the lessons learned by the Gawker Media hack last year, online dating sites PlentyOfFish.com and eHarmony.com were recently hacked as well. Yet again, you must take action to protect yourself in this situation. But what can you do if their site is compromised? It doesn’t matter what measures you have taken to secure your data if the site to which you have given it is compromised… or does it?