Thanks for the reply. I see what you mean and agree there is some difference. Let me put it this way: I would feel confident my Wuala backup is secure from my

Thanks for the reply. I see what you mean and agree there is some difference. Let me put it this way: I would feel confident my Wuala backup is secure from my boss or ex-girlfriend, but not from a hostile government. If I were an activist or otherwise doing something very controversial, I wouldn't trust it. And honestly, that's the same way I feel about Dropbox. It's not the most secure thing around, but as long as I'm just another J. Random Hacker, who cares? So to me there isn't a distinction. For why not to trust a closed-source system's claims of security, see Skype. If I remember correctly what I have read, they boasted about using "end-to-end encryption", strongly implying that your Skype calls could not be wiretapped. The catch? The encryption keys were stored on the server! And there was a story where someone (a drug smuggler, I think) was busted seemingly as a result of intercepted Skype calls. The misleading claims of security didn't ruin Skype's reputation - people still use it. I'm glad you replied to my comment as it shows you're at least thinking about these things. I hope you will consider opening your source code in the future. At that point Wuala might be of interest to me.