Las Vegas Sands Corp, The Venetian.

Hackers broke into the websites of some of the world's largest casinos on Tuesday.

In what appeared to be an attack linked to casino magnate Sheldon Adelson's pro-Israel views, several websites run by Las Vegas Sands, the operating company behind the Venetian and Palazzo casinos in Las Vegas as well as casinos in Bethlehem, Pa., Singapore, and Macau, were taken over.