Whats App logo 1 150x150 WhatsApp storing messages and contact data unencrypted on iOS, Android, BlackBerry and SymbianThe iPhone and Android version of WhatsApp, both store all messages that are being sent or received locally and unencrypted on the phones. The Android version even stores the messages on the SD-card, allowing other applications to access them.

The messages are stored in a nosql-database, together with names, contacts and timestamps. The URL’s of media files are also saved in this database, but cannot be accessed because it is likely that these links will check if the device is authorized or not.

It is yet unknown whether the clients for BlackBerry and Symbian also store the data in a unencrypted database. Storing messages unencrypted is a serious security risk, especially the Android version that stores all the chat data on the SD-card and always uses the same URL. It is also possible for hackers to develop an application that steals the chat logs, and obtain phone numbers and contacts.

This isn’t possible on the iPhone since the logs are stored in a directly that can only be accessed by the WhatsApp application. Users that own a jailbroken iPhone are can be at risk, an application with root access could be capable to steal the messages as well.

So more bad news for WhatsApp, last week it already became clear that it is possible to spoof the SMS verification that is needed when first starting the application, allowing you to read messages of someone else. This new problem is quite similar to the Skype, which also saved data on the SD-card. They however quickly released a new update that solved the problem.

whatsapp WhatsApp storing messages and contact data unencrypted on iOS, Android, BlackBerry and Symbian

3 Responses to WhatsApp storing messages and contact data unencrypted on iOS, Android, BlackBerry and Symbian


  1. nada
    Dec 07, 2011

    Thanks for the report now am more confused than I was before.
    So Am I safe with using my 3G Android or Iphone or not yet?
    Please answer me in clear respond weather I can trust WhatsApp or better to Shift to Blackberry?


    • YourDailyMac Staff
      Dec 08, 2011

      Yeah you are fine, i think they solved the problems in some of the updates they rolled out.


  2. Solima
    Jan 19, 2012

    Hi:
    if i am using my Owen ADSL connection in my home instead of 3G .. can the provider access my WhatsApp messages ?
    and if any image has been sent or received .. can they see it??
    and how it would look like ??
    can you Plz answer me providing a clearer image about how the chat will look like ?
    i mean does the chats will be categorized and grouped according to the sender and receiver ????

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