Online travel agency ezTravel yesterday said that no credit card numbers were compromised in a data breach affecting more than 690,000 members, but urged customers to remain vigilant against potential scams.In a statement, ezTravel said that on Saturday, it detected unusual external network activity. Add TT as Preferred Source Online travel agency ezTravel yesterday said that no credit card numbers were compromised in a data breach affecting more than 690,000 members, but.