I made the bitaddess a long time ago.
Are they not secure? If no why?
If your purpose was to have a paper wallet, you have already defeated the purpose by importing the private key into an online device.
A paper wallet should be created on an airgapped device and the private key should never connect to the internet.
Also note that it's never a good idea to generate a private key through javascript. For more information, you can click
here and read gmaxwell's post on another thread.
What are better ways to create addresses in the future?
Why not generating a wallet with electrum itself?