“As business travelers, we’re on the road so much, we psychologically forget that we’re in public,” said Ben Knieff, head of product marketing for fraud at NICE Actimize, a company that focuses on financial crimes in the financial services industry. Mr. Knieff recalled how he was recently boarding a plane and overheard an executive speaking loudly on a cellphone as he booked a hotel, revealing all of his credit card information, including the security code.