Just speaking generally since I know nothing about the site above.
One thing to keep in mind on internet security. If you have personal info (login, address, CC, etc.) stored in your browser, it can potentially be captured without submitting anything. This is the downside of many browser "convenience" features...
A webpage can be setup to take advantage of autocomplete and automatically push that data externally without you even submitting a form. Merely hitting a webpage that's setup in a malicious way is sometimes enough to do it.
I'd always recommend disabling autocomplete on your browser/device and never store any private info on it. Accept the inconvenience of spending the extra minute having to type in your info and it'll go a long way towards reducing certain security risks.