Local data storage is one of the features that came
with the HTML5 standard. Its purpose is to ensure the storage
of web application's data in the device of the user rather than
in the server side. With HTM5, the storage is no more achieved
by proprietary solution as it is ensured by standardized APIs.
However, with this new functionality that improves the user's
quality of experience, it is crucial to reassure the end user
about his data protection when they are stored locally and when
they are externalized. In this work, our contribution deals with
the assurance and security of data stored by HTML5 APIs.
These measures are integrated into the browser to be performed
automatically. In fact, data .