Another vote for no scribd on the landing page -- it looks foreign and distracts from the sign up button (your "call to action").

"How it works?" isn't really a question. Either "How does it work?" or "How it works:"

This might just be me, but WIGS is a strange thing to see on the header. I get that it's the name of the product, but it wasn't obvious from the main page that Sucuri made WIGS. Something more descriptive, like "about" or "about WIGS" or "about the product" would be better.

If you want me to check out the demo, don't make me type in the username and password. A form with some hidden fields and a button requires way less user effort.

Style looks good, says "security company." The (BETA) in the title doesn't really jive with that message, though.

Why is it free, by the way? I think any businessperson looking at a service like yours would be _less_ likely to use it for free than for pay if something of value is on the line.