Hackers reportedly infiltrated the computer systems used by multiple Trump properties in a several-month time span recently, exposing patrons’ credit card information.

Personal data taken from the credit cards include full name, card number and expiration date. In some cases, other information was stolen, like email, phone number and address, according to the Trump Hotels’ press release.

Cybercriminals didn’t directly hack the Trump Hotels’ systems, but rather the reservation scheduling service it employs.

Several guests at 14 different locations, like the relatively new Trump International Hotel in Washington, D.C., could be affected by the breach. While the exact amount is not known, a spokesman for Sabre Hospitality Solutions, the reservation booking company, told The Washington Post Tuesday that less than 15 percent of daily bookings on the reservation system were compromised.

The timeline for each location affected vary, with most occurring around November of 2016.

Some properties, like Trump Soho in New York, list the relevant booking dates as from July 5, 2016 to Nov. 20, 2016. The Washington, D.C. and Las Vegas lodging resorts were reportedly infiltrated until March, 2017. Despite the Soho listing, Trump Hotels and Sabre assert that the first breach was August 10, 2016, and the last was March 9, 2017.

“We are working with Sabre to address this issue,” Trump Hotels wrote in a press release. “We understand that Sabre engaged a leading cybersecurity firm to support its investigation. Sabre indicated that they also notified law enforcement and the payment card brands about this incident.”

Trump Hotels also provides instructions in the press release for what a person should do if they believe they were harmed by the breach. (RELATED: Democratic Rep. Calls For Official Probe Into Trump’s Unsecured Phone)

The larger hospitality conglomerate may need to bolster its cybersecurity capabilities. Even though the hack didn’t occur directly on their own systems, President Donald Trump’s properties have been hacked before.

An investigative report conducted by the nonprofit ProPublica and tech publication Gizmodo, published in May, allegedly revealed that the Mar-a-Lago Club in Florida is really vulnerable to hackers. The journalists proved their point by sailing a “17 foot motor boat” around 800 feet away from the resort with an antenna in tow.

Hotels in general appear to be a popular target for evildoers on the internet.

Twenty facilities part of HEI Hotels & Resorts — the hospitality chain that owns well-known hotels like Marriott, Hyatt, and Intercontinental — were unknowingly hacked for months.

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