Local and federal authorities are investigating the attack that brought down all Sands' Hotels and Casinos websites across the U.S. and Asia on Monday, including those of the Venetian Las Vegas and Palazzo.
The FBI and Secret Service are among those investigating the attack, according to the Las Vegas Sun. All of the websites across both continents remain down more than two days after they were targeted by hackers.
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A. G. Burnett, chairman of the Nevada Gaming Control Board, said Thursday that no customer information, including credit card data, was compromised in the attack. "That's not what happened at Sands, according to our information," he told AP.
The Sun also reports the the attack may have started as early as Monday morning when the company's email servers went down. The following morning, hackers took control of the Sands websites and and posted employee information, including email addresses and social security numbers.

A screenshot of the Sands website after being hacked. The images has since been removed but Sands' websites remain down.
Image: The Morning Call
The attackers also posted a photo of Sands CEO Sheldon Adelson with Israel's Prime Minister Benjamin Netanyahu, along with images of flames and a message condemning weapons of mass destruction. The identity of the hackers is unclear, but the photo of Adelson has caused speculation that his vocal support of Israel may have prompted the attack.
The company hasn't said when their websites and email will be back up and functioning. Visitors to the sites are greeted with messages stating the websites are down for maintenance and provide phone numbers for those requiring immediate assistance. Reservations are still available through third-party sites.

The Sands hotels' websites are still down, more than two days after being hacked.
Image: Las Vegas Sands
"While we have been able to confirm that certain core operating systems were not impacted by the hacking, the company remains focused on working through a step-by-step process to ascertain what, if any, additional systems may have been impacted," Sands spokesman Ron Reese said in a statement Wednesday.
Sands is the biggest casino operator in the world and runs casinos in the United States, China and Singapore.
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