Republican presidential candidate Donald Trump's string of luxury hotel properties, The Trump Hotel Collection, appears to be dealing with the second breach of its credit card systems in a year, KrebsonSecurity reported on Monday.The company was investigating the claims, the blog reported. (bit.ly/25HgQWb)The company could not be immediately reached. The luxury hotel fell victim to a credit card breach in July. The hotel industry has been hit by such breaches. Hyatt Hotels Corp had reported a malware attack to steal payment card data in January while Starwood Hotels & Resorts Worldwide Inc had reported a breach in November. (Reporting by Arunima Banerjee in Bengaluru; Editing by Don Sebastian)