The big difference is spoofing. And that is a big difference if you don't have a 2 Factor login.

I was lucky that it was my satoshi wallet, for most first time transactions concerning facets.
For my main wallet I don't use a webwallet.

In my case it couldn't be a virus or malware as I was running from a (Linux) live DVD.

In my last post I forgot to say it happened to me as well, so I'm sure it was spoofing. Normally I'm alert on those things but I had an friend whiff problems on the phone.

I think it works true spoofing blockchain. If you don't have a 2 factor login they have full access.