Hardly a day passes without news of yet another site or business being compromised. Usually it is credit card and personal information that has been exposed but in this case customers of the service could have considerably more to lose.
Irrespective of your opinion on the morals of such a service the key takeaway is that no business should consider themselves immune from attack.
Akamai's State of the Internet security report gives insight into the varying attack vectors being employed by those who would do harm to our customers.
Sure there are those who employ basic tools and get involved in attacks through ignorance or naivete but there are also highly organized, determined teams who are actively targeting businesses for the sole purpose of pushing a political agenda or gaining financially through extortion e.g. DD4BC
Take all reasonable precautions to secure your customer's data and protect your brand and your business.
The message is clear...be prepared and don't get caught with your pants down.