Whether you go on someone’s blog wisecracking bad person or a website controlled by malicious computer that can fall victim to an exploit sail that allows filling your hard drive with unnecessary data and even block web browser.
Escape blame is poured into standard Web Storage, which is part of the set of HTML5 technologies delivered with virtually any modern web browser. Web Storage feature allows any website to place data on the hard disk of the user, used to customize certain services and applications. The problem is that the standard does not define a limit on the amount of data that a website can store at one time, hence the risk of someone to transfer more data than is reasonable cause real problems users rapidly filling hard drive the data. Fortunately, the data stored in this way are still isolated from the rest of the system and the attacker can not get access opportunity on target PCs.
Surprisingly, the W3C (the organization responsible for approving HTML5 technologies) anticipated the possibility of exploitation of flaws in malicious software developers recommending limiting disk space allocated to each website, or include a mechanism to alert users when the web they visit the attempt to monopolize more than 5 MB of storage space.
Mozilla currently only seems to have taken seriously the warnings received, including some protective mechanisms that drive the inconvenience Firefox users.
Instead, users of Google Chrome, Microsoft Internet Explorer, Opera and Apple Safari are left exposed. Moreover, with the exhaustion of available hard disk space web browser Chrome is experiencing frequent blockages that give users even more trouble.
Those who want to experience your own risk this exploit can visit the website FillDisk.com. Should be noted that storage space occupied improperly can be recovered using the option to delete browsing history in web browser with temporary files and data checked websites.