Visa and MasterCard figured in as the next most trusted brands, the survey found, followed by Apple, Nokia and Samsung. Mobile operators were behind in the list.
"When we think of trust or security, we probably default to a brand that’s been around for a long time. In this case, people have put their trust in a very new company," GfK analyst and report author Ryan Garner told Reuters.
"Whilst financial brands have built up high levels of trust, mobile-based brands such as Nokia and Apple, and relatively new financial brands like PayPal, have the potential to disrupt this seemingly comfortable position," GfK said.