Contrary to other TOR to web proxys, we use the Content Security Policy. This makes it impossible for the serveroperator of the page you visit via onion.cab or any third party, to read out your real IP-address.
Onion.cab is secured by an SSL-Certifikate which was created POST-Heartbleed
Onion.cab is not just a TOR to web proxy, but also a searchengine for the TOR-Network
If you visit an onion.cab-url with your TOR-browser, you will be automaticly redirected to the .onion site. This makes it easy for clearweb-webmasters to link to .onion-urls without making it nessesary to have TOR installed for the user.