Las Vegas Sands Corp. confirmed in a statement that the information about some patrons at its Bethlehem, Pa., hotel-casino was compromised during the Feb. 10 attack. It was unclear whether credit card information was also taken.
Sands said it was still working to determine whether customer information from other properties was breached. The company runs the Italian-themed Venetian and Palazzo on the Las Vegas Strip, and several hotel-casinos in China and Singapore.
In its statement, Sands notes that the number of patron accounts that were compromised make up less than 1 percent of all visitors to the Bethlehem casino since its 2009 opening. The company did not provide the number of patron accounts at risk.
The Las Vegas-based company pulled down its corporate and individual hotel websites Feb. 11 after hackers defaced them with images condemning comments Sands CEO Sheldon Adelson had made about using nuclear weapons on Iran. The hackers also posted Social Security numbers for Sands' Bethlehem employees.
It took the company nearly a week to get the sites back up. The hacking also knocked down internal systems, and left corporate employees without access to their computers and email accounts for days.
Last week, an anonymous video surfaced that appeared to catalog additional information stolen during the hacking, including administrator passwords for slot machine systems and player information at the Bethlehem casino.
The FBI and Secret Service have been investigating the cyberattack.
Sands, which is the world's largest casino company in terms of revenue and market value, also owns the world's largest casino in the Chinese gambling enclave of Macau. The company's net income was $2.31 billion last year.
Shares of Las Vegas Sands rose 12 cents to close at $85.25 Friday.
Hannah Dreier can be reached at http://twitter.com/hannahdreier .