How Secure Is Hot Spot Shield

I'm using a open wifi connection & need to login to paypal my
bank & have a secure email connection.

How secure is Hot Spot Shield, Has any one tested out how secure
it is to use on a public wifi I'm going to be loging into my bank if
it's secure.

Nobody can tell you how secure is Hotspot Shield because nobody can be 100% sure that there are no logs on the servers. Except for the HS guys, of course

I've never heard anyone complaining about it, but you never know. The fact that more than 7.5 million people are using it every month may represent a quaranty.