Legal fallout from the massive Starwood Hotels reservation breach reported last week has begun, with class-action suits filed on behalf of both guests and investors.

On Friday, Murphy, Falcon & Murphy, with co-counsel Morgan & Morgan, filed a class-action suit against Marriott International on behalf of the 500 million guests whose personal information was part of the breach. According to a statement announcing the suit, "Marriott failed to ensure the integrity of its servers and to properly safeguard consumers' highly sensitive and confidential information."

The next day, Dec. 1, Rosen Law Firm announced that it had filed a class-action suit on behalf of those who purchased Marriott International shares from Nov. 9, 2016, through the day prior to the suit's filing date. The suit claims that Marriott International made misleading statements to shareholders by not finding and disclosing the breach prior to the purchase of Starwood Hotels.

At least one additional lawsuit on behalf of guests has been filed, and more lawsuits on behalf of both guests and shareholders are anticipated.

Read here, here, and here for more.