Compromised Uber accounts have been sold on and are being used in China for free rides.

Uber's foray into China hasn't gone as smoothly as planned.

The controversial service has caused friction between drivers signed up to Uber and the traditional taxi worldwide. The personalized ride-finding service was recently criticized after warning its Chinese drivers not to become involved in conflicts with local law enforcement over Uber-related protests.

Despite legal cases and protests, Uber lives on -- but Chinese taxi drivers are the latest to take to the streets in protest of what they consider unfair competition.

The latest issue Uber has to tackle is one related to cybersecurity. As reported by Motherboard, Chinese residents appear to be taking advantage of compromised Uber accounts to snag free rides.

A number of Twitter users worldwide are complaining that their Uber accounts have been hacked and are being used to secure rides in China without their consent or knowledge. Several days ago, Twitter user Kirby Bittner said, "@Uber I had a great ride in China this morning! Except, weird, I wasn't in China this morning."

Other users have also complained that their accounts have been compromised.

After an account has been hacked, you can eventually find them for sale in the Dark Web. Identities can be purchased for as little as $1, as well as compromised eBay, PayPal, Facebook, Netflix, Amazon and Uber accounts.

This month, information concerning shared trips conducted through Uber were discovered in a Google cache and were available to anyone using simply "trip.uber.com" in the search engine. Some of these trips date back as far as 2013, and include trips from the US, UK, Russia, Indonesia, India, and the Philippines. Uber said the company was looking into the issue.

Read on: The price of your identity in the Dark Web? No more than a dollar

ZDNet has reached out to Uber and will update if we hear back.

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