Is sandboxing broken?

 According to Gorenc, one of the foremost security technologies making life significantly more difficult for attackers is application sandboxing, which basically isolates code execution within a virtual container. If implemented properly, a sandbox prevents the spread of malicious code from a single application out to a system.

 Internet Explorer, Google Chrome, Flash and Reader all use sandboxing technology to some degree (Firefox, notably, does not), yet researchers at Pwn2Own were able to bypass the sandboxes in all of those applications. 

Mozilla is always working on making Firefox more secure. As far as other web browsers having a "sandbox", those Pwn2Own researchers were able to exploit those. http://searchsecurity.techtarget.com/news/2240216341/Despite-Pwn2Own-2014-hacks-application-sandboxing-still-critical <pre><nowiki> Is sandboxing broken? According to Gorenc, one of the foremost security technologies making life significantly more difficult for attackers is application sandboxing, which basically isolates code execution within a virtual container. If implemented properly, a sandbox prevents the spread of malicious code from a single application out to a system. Internet Explorer, Google Chrome, Flash and Reader all use sandboxing technology to some degree (Firefox, notably, does not), yet researchers at Pwn2Own were able to bypass the sandboxes in all of those applications. </nowiki></pre>