TripAdvisor has had a relatively minor security breach and are appearing to do the right thing by advising members' on their database:
To our registered owners and Business Listings subscribers:
This past weekend we discovered that an unauthorized third party had stolen part of TripAdvisor's member email list, including some registered owners' email addresses. We're taking this incident very seriously and are actively pursuing the matter with law enforcement.
You may receive some unsolicited emails (spam) as a result of this incident. I want to reassure you, however, that no additional information beyond email addresses was lost. Any other information you have shared with us, such as your name, address, title, and credit card or bank information, is still secure.
We will continue to take all appropriate measures to keep your personal information secure at TripAdvisor. I sincerely apologize for this incident and appreciate your participation in our travel community.
President, TripAdvisor for Business
For more information: Click HERE