Radisson hotels, operators of about 400 franchised locations in 65 countries, recently reported significant data breaches exposing sensitive customer data.

An open letter to guests from Radisson chief operating officer Fredrik Korallus reveals that Radisson's computer system was victimized by hackers between November 2008 and May 2009. Stolen customer information includes credit and debit card numbers. (Source: zdnet.com)

Limited Number of Hotels Involved

According to the letter, a limited number of hotels in the U.S. and Canada were involved in the incident. Other information accessed may have included names printed on a guest's credit or debit card, the card number and/or a card's expiration date.

Radisson has been coordinating with federal law enforcement to assist in investigating the incident, but there is no mention of how many customer records were accessed.

Radisson Offers Free Credit Monitoring

Radisson is recommending that customers review their credit/debit card statements and credit reports closely and to report any unauthorized card activity to the bank that issued it, along with the proper law enforcement authorities.

Victims of the breach can visit Radisson's website for instructions on how to receive free credit monitoring for one year.

Radisson has implemented additional security measures to prevent a recurrence of the breach. More information on the breach can be found in the letter from Radisson's chief operating officer or by calling (866) 584-9255 between the hours of 7 a.m. and 11 p.m. CST daily.

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