We have managed to identify the 3rd party, who is well known to be trusted, as the source of the script. They have been contacted about the compromise, and have removed the malicious script being served to not only Curse, but possibly everyone with whom they work. They are still investigating the breach.
Curse takes security extremely seriously, and has removed all 3rd party ad partners until the investigation is complete. We will keep you informed of the outcome of this investigation. In the meantime, we recommend you run a malware scan on your computer. You can run a free scan at http://www.malwarebytes.org/. We sincerely apologize for this inconvenience.
At no time was any information in our databases compromised - your logins, user info, and all other personal information is safe and sound! We will continue to monitor the situation, just to be on the safe side.