Pornographic video site YouPorn was compromised by a security breach on Wednesday after a third-party chat service didn't secure its data, resulting in thousands of users seeing their e-mails, usernames and passwords exposed.

Manwin Holding SARL, YouPorn's parent company, said it has disabled the third-party chat service called YP Chat and will keep it that way until it has conducted a thorough investigation. Kate Miller, a spokesperson for Manwin, emphasized the fact that the security breach occurred on the chat service's end, and YouPorn itself was not breached.

YouPorn continues to ensure that all appropriate measures and tools are in place to maintain the security of its infrastructure, and to safeguard the privacy of its users, Miller said.

Miller did not state how many people would be affected by the security breach. The Associated Press reported that thousands of e-mail and password combos circulated online after the breach occurred, but the news outlet could not speak to their authenticity as some of the addresses appeared to be bogus or inactive.

Miller did not say how long it would take to investigate YP Chat, and did not mention anything about the chat service's ownership. Even though the site is currently disabled for investigation reasons, a cached version of YP Chat's website described the company as an affiliate partner program site licensed by YouPorn.

The breach was likely an attempt to score usernames and passwords and distribute them amongst the Internet faithful who do not want to pay for premium pornography services. This is not uncommon; even in early February, a hacker reportedly broke into Brazzers, another pornography site owned by Manwin, and similarly published a list of usernames and passwords.

YouPorn, based in Los Angeles, is one of the 100 most-popular websites on the planet, according to Web analytics firm Alexa, and one of the highest-trafficked porn websites. Crashing and slowing is common on the site, which experiences an extremely high volume of users that consume more than three terabytes of bandwidth each day.