SHREDroid

WARNING: Issues with this application have been reported on the MOTOROLA series of devices. After getting such devices we will try to replicate this error and fix it. Installation for those devices is not recommended until this is resolved. Please do report all the issues to us and read our FAQs: www.securedeletion.com/faq.html
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SHREDroid forces your Android phone to overwrite deleted data so that it is actually deleted and can no longer be recovered.

Our smart phones store sensitive personal and business data such as emails, SMS messages, pictures, and our web browsing histories. Unfortunately deletion on phones is not immediate. Even after you delete your email or clear your browser's cache, the data will remain on your phone typically for days or even months, depending on phone usage. This data is easily recoverable with minimal effort by technically-knowledgable persons.

Standard countermeasures do not help, such as overwriting files with random data, due to special features of the Android's file system (namely the use of journaling). Even encryption does not help as the associated key must be stored temporarily in memory and is recoverable after deletion.

Our SHREDroid application solves this problem. SHREDroid forces your Android phone to overwrite the sections of storage where deleted data resides so that the data is really deleted and cannot be recovered.