I am looking for some comments regarding online Storage as a backup. While I am currently looking at Jungle Disk and Amazon, my query is general in nature. Also, while I appreciate that factors like pricing or user-friendliness are important issues, for this topic I would like to focus only on security. I would like to use online storage as safety backup for my normal backup (in case the house burns down or thieves run away with everything ). The data I would like to store is confidential, so I want this to be encrypted and not accessible during upload/download or on the server. I am not concerned about government agencies snooping with super high-tech software or warrants. In case of JD (Jungle Disk) I understand that the upload/download is done via SSL (encrypted) and the files are also encrypted on the Amazon servers. Question: How much can I trust either JD or Amazon with respect to their software and encryption keys? Is this just a judgement call or can someone state with conviction that no backdoor could exist for them to use a "supermasterkey" to snoop? Would it be better to use an external program like Cobian to do the upload using their inbuilt encryption function? That way there is a separation of keys and data.