Privacy Policy. UCWeb Inc. See more. Google Chrome: Google LLC. Fast, simple, and secure. Google Chrome browser for Android phones and tablets. Puffin Web Browser. CloudMosa, Inc. Puffin Web Browser - It's wicked fast! Opera Mini - fast web browser. Allows the app to take pictures and videos with the camera. This permission allows the app to use the camera at any time without your confirmation. Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.

Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks.

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Allows the app to read from the system's various log files. This allows it to discover general information about what you are doing with the device, potentially including personal or private information. Allows the app to read the history of all URLs that the Browser has visited, and all of the Browser's bookmarks.

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Allows the app to retrieve information about currently and recently running tasks. This may allow the app to discover information about which applications are used on the device. Allows the app to draw on top of other applications or parts of the user interface. They may interfere with your use of the interface in any application, or change what you think you are seeing in other applications.

Allows the app to disable the keylock and any associated password security. For example, the phone disables the keylock when receiving an incoming phone call, then re-enables the keylock when the call is finished. Allows an app to read the sync stats for an account, including the history of sync events and how much data is synced.

Allows the app to use the account authenticator capabilities of the AccountManager, including creating accounts and getting and setting their passwords.



Allows an app to modify the sync settings for an account. For example, this can be used to enable sync of the People app with an account.

UC Browser

Allows apps to accept cloud to device messages sent by the app's service. Using this service will incur data usage. Malicious apps could cause excess data usage. Allows the app to get the list of accounts known by the device. This may include any accounts created by applications you have installed. Allows the app to have itself started as soon as the system has finished booting.

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This can make it take longer to start the device and allow the app to slow down the overall device by always running. As discussed further in the report, UC Browser Chinese accesses phone identity and geolocation information and transmits it insecurely. Our test results are summarized in Table In our first test, we launched the application, let UC Browser Chinese idle for seconds, and collected all network traffic sent to and from the device. We then analyzed that traffic to determine what data was being sent and its destination.

We performed the test first by connecting the mobile device to the Internet using a cellular connection, and, second, by connecting the device to the Internet using a Wi-Fi network. Upon starting the application, the application communicated with the following hosts over HTTP:. AMAP is a mobile mapping application that was originally developed by Autonavi, a company acquired by Alibaba in April AMAP is estimated to have more than million users.

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Investigating these communications further, we saw that a typical exchange with apilocate. As we were interested in determining what, if any, data the application transfers from the device, the block of data sent to apilocate. We used a freely available tool, pyhttpextract, to decipher the contents of this encoded data block. After using this tool, we saw that UC Browser Chinese sent the following data to apilocate.

Its size suggested that it might contain user data. To confirm if user data was present we first analyzed how the data was encrypted. We examined the file Aes. The encryption process is shown in Figure The use of symmetric encryption with a hard-coded key means that anyone who knows the key can decrypt UC Browser Chinese traffic in transit.

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Moreover, key holders can also retroactively decrypt any historical data that they have collected or obtained. After formatting the structure for readability, the data sent looked as follows:. The data sent to apilocate. The first set referred to the mobile device itself: The second set referred to details of the cell tower to which the device is connected: In aggregate, these sets of information can be used to identify the cellular subscriber, the physical handset, and the physical location of the device.



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Such identifications are problematic because, using the information and the rate at which the application transmits it, we can determine a cell tower location with considerable accuracy and thus geolocate the person using the application. As an example, we were able to pinpoint the location of our lab where we conducted the testing, as shown in Figure Umeng is a mobile analytics service that is reportedly used by over , applications.

It was purchased by Alibaba in The data structure sent, unencrypted, to utop. A number of unique personal identifiers are included in this data structure. Upon starting the application and letting it idle for seconds while connected to a Wi-Fi network, we found that UC Browser Chinese sent the same easily-decrypted user data seen in Cell only communication.

However, in addition the application sent data about nearby Wi-Fi access points, including their MAC address. These data elements are identified in Figure When connected to a Wi-Fi network, personal user data is also sent unencrypted to Umeng. Figure 15 shows a sample of traffic sent to utop. Re-formatting the above traffic for readability shows the following GET request to utop. Search queries that are entered into the search bar were sent without encryption to http: As part of our research we conducted tests to determine what, if any, personal user data was stored on the device.

We began by selecting the option in the application allowing users to delete private information from the device, such as cookies and browser history. After selecting this option, we examined whether user data remained on the device by checking the cache directory for the application. There was sufficient plaintext remaining that the records could be read using a simple text editor. In other words, even if a user attempts to clear browsing records their personal data remains available for scrutiny and can be trivially accessed. We next conducted tests of the English language edition of UC Browser version We performed the same idle test described previously with the English language version: We first performed the test by connecting the mobile device to the Internet using a cellular connection and, second, by connecting the device to the Internet using a Wi-Fi network.

We were not able to identify any easily decrypted traffic sent in the English language version. UC Browser English has two methods for performing web searches.