The files, after you've booted can be found in /lib/live/mount/medium/vanitygen if you used WinISO (On Windows 7) to put it in the root of the iso-image.
To prepare the USB disk (make it bootable and add iso), I used Universal USB Installer 1.9.3.0. (On windows 7)
..
Consider:
-Your windows machine is completely PwnD, making any code that touched it untrustable and/or
It was a fresh install - with a minimum amounts of programs on it. So I don't see the reason to worry.......... It's not like a malware program would attack the computer that was freshly formatted, fresh w7 install and done all windows update + service pack 1. + firewall AND then insert malicious code in the iso-image that i manipulated, and then putting said iso image on an usb disk that i connected to another computer, and I had already retrieved the vanitigen binaries from a hardened down debian server on my local network and put these in the iso. Then i boot this usb image with the vanitygen program, generate the address/privkey par and then proceed to shut down that computer. Nothing is saved on the usb disk, and the computer in question is turned off, when it's back on, it doesn't even knew there was key-generating going on minutes ago, no way for anyone to get that info. Also the pc i booted from was off the network. There's not a chance that the private key can be compromised. If you know or think otherwise, please let me know - but your post reeks of those chest pugging know-it-all attitude that some geeks have.
-Your adversary can remotely access or physically steal the USB device and recover anything you've deleted or had in RAM (swap file).
They can steal the USB device - fine - no private key there. Remote access, what good would it do when there's no private key there to be found ? Also this iso image will never have network contact once written to the usb-drive.. RAM - swap file ? Off the network, shut off - rebooted with normal OS. Yeah - big risk there...
Better still would be to disconnect all hard drives and storage media on the target machine, and only boot and run off a live CD
with a compile environment. You then only have to figure out how to get vanitygen code to the machine securely (removable non-writable media), and how to get the address/privkeys off the machine securely (print, burn CD) without creating any persistent digital copy whatsoever.
If you don't actually need
vanity addresses, easier is just to use the
bitaddress HTML/JavaScript generator code offline.
You're frankly talking completely out of your ass Sir. Even if my vanity gen compile somehow got compromised, it would be no help as it never would be online, and thus could never send any information anywhere.
For the record, the info was noted down on paper - by hand. I already mentioned that I did not make a photo with my cell or just a printer, exactly not to create persistent digital copies...
Your post was total bollocks.