Roger that! Any time a 3rd party is involved, you introduced one more point which can be compromised. Hushmail has in fact cooperated with law enforcement in the past and turned over email records unencrypted. PGP encryption is so far uncrackable, but if Hushmail has access to the unencrypted email at any time, you are basically at their mercy. If the US LE requests access at Canadian courts, they may comply in most cases due to the mutual legal assistance treaty Canada has signed with the US. This is why I personally do not like to use P411 either.
There are some good inexpensive solutions for secured web surfing. One of them is running a diskless laptop with Live Dvd such as Fedora. The entire operating system is on the DVD and you can run the laptop without a hard drvie. Just make sure you have enough physical memory for all the running processes. If you are in maximum paranoia mode, modify the MAC address of your WiFi device with a randomly generated 48 bit number after booting the system. Surf the web at a public WiFi hotspot. This way even if the WiFi access point keeps a DHCP log and web access activities, none of those logs can be definitively tied to your computer. Once you are done, shut down the computer and all the data just vaporized in thin air.
Posted By: mystere_man
There are some important things you have to realize.
First, Hushmail is not secure. It's simply not. It's maybe a little better than an unencrypted mail system, but since Hushmail can decode the email, that means they have access to it. They can simply log your password and they can decrypt it. Likewise, anyone with a key logger can get your password.
Any encryption system that requires you to enter the password remotely can be compromised. Only systems that encrypt locally before they send it to the server are secure, and then only if you've seen the code (or someone you trust).
What's more, Hushmail only encrypts mail on their server. Once it's been opened by another person, you can't control what they do with it.
Second, Private browsing still saves file to the hard disk. Seriously, it does. However, it "deletes" them when you close the browser. What's more, anything on your screen is stored in what's known as "virtual memory", and it's possible for a savvy person to view this file and see things that are stored in memory before the computer was shut down.
This is why encrypting your hard disk is so important. Many things that say they are secure just aren't, or only secure enough to stop your spouse from spying on you (assuming they're not very tech savvy).
Full hard disk encryption, such as BitLocker or TrueCrypt or PGPCrypt are the only mostly secure methods, and even they can be compromised in certain specific situations (but those are very difficult to achieve).