"We are currently responding to a cybersecurity incident. We are in touch with law enforcement and will post additional updates here as they become available," the company said in a statement on Twitter.
Uber did not provide further details regarding the cybersecurity incident, however, The New York Times, which first reported the incident, said that a hacker managed to gain access to the company's office messaging app Slack and used it to post a message to Uber employees.
"I announce I am a hacker and uber has suffered a data breach," the message reportedly read.
According to the publication, Uber promptly took several of its internal communications and engineering systems offline while it launched an investigation into the extent of the breach.
Screenshots of the incident obtained by The New York Times and The Washington Post showed the hacker claiming to have access to a number of Uber's internal systems and corporate networks.