Executive summary

UCWeb, a Chineses mobile internet company owned by Alibaba Group is exfiltrating user browsing and search history from its products distributed on mobile devices around the world even when the browser is used in incognito mode. This behavior is consistent on both Android and iOS devices.

UCWeb advertises the product incognito mode to be a private & secure way of browsing the internet. However, they are exfiltrating the users activity to UCWeb’s servers.

“Your browsing history and search history won’t be recorded”

UC Browser, the company’s main product, is the 4th largest browser on the mobile market.


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