As stated already, Web Storage (AKA “HTML5 Storage”) is designed to store name/value (it calls them key/value) pairs on the web client.

A security researcher has found a loophole in how the HTML5 Web Storage standard is implemented in the Google Chrome, Internet Explorer and Apple Safari browsers that could allow malicious ...

Yet concerns surrounding HTML5’s architecture linger, along with a debate concerning the use of native mobile apps versus apps developed for the mobile Web.