The FBI is warning Americans that hackers are attempting to install malware on computers via the sign-in process commonly used by hotels. The problem apparently does not affect the U.S., but hotels abroad. During the log-in, travelers have reported additional pop-up windows that suggest the update of a "widely used" software for which "updates are frequently available".
Common sense suggest to be always careful with such update and download requests, especially if they are communicated via a pop-up window. Needless to say, there is no update, but downloaded and installed malware instead.
Those who were tricked into the download of the "update", are asked to immediately contact their local FBI office, and "promptly report it" to the IC3's website.