This weekend, President Obama resided at The Fairmont, an upscale San Francisco hotel, while attending a cybersecurity summit and highlighting the benefits of better corporate cybersecurity practices. Ironically, his hotel was hit with a computer outage that left the system down during President Obama's stay. The Fairmont's general manager confirms that there was "no evidence" that the computer systems were hacked.

"There's certainly no evidence to say anything was hacked or compromised," said Thomas Klein, the hotel's general manager, NBC News reports.

"It's just a coincidence in timing," he added, noting the irony of President Obama's attendance at a cybersecurity summit while the computer system was down.

Upon the president's arrival Thursday night, his entourage was informed that the hotel's operating system was not working. They had to fill out paper forms to check in instead of swiping credit cards. At checkout, a hotel employee took guests' email addresses in order to send them their receipts.

Klein said he alerted the Secret Service about the issue.

"They checked into it ... and they said no, they have no evidence of any hacking," he said. "It was a hardware issue that impacted the hotel operating system."

The problem still had not been fixed by Saturday morning, when Obama left for California's Palm Springs area to spend the weekend golfing.

At Friday's cybersecurity summit, the president asked U.S. corporate executives to cooperate more with each other and the government in defending against hackers. This issue has reached national attention after high-profile attacks on companies such as Sony exposed weaknesses in U.S. cyber defenses.