I haven’t downloaded Rapport because I can’t find any concrete information as to what it actually does.
Even Trusteer’s own website is terrifically vague as to what it is. Far as I can glean, it’s some mechanism that goes “yes, this is your bank’s website” and “hey look, you’re sending banking transactions” (which would’ve answered the OP’s query at least).
But all I can find is marketing guff about how great it is and why it’s important (ZOMG PROTECT YOUR IDENTITIEZ!!!) without and technical information as to what it does.
And frankly, if they’re going to treat me like a gibbon, they can stick their “security” software up their ATM slot.