I want to cancel the free trial for Norton Wifi Privacy VPN before I am charged by June 15th How do I do this

Hi

To view and manage your current subscriptions - and to turn off Automatic Renewal for the app - follow the instructions here:

View, change, or cancel your subscriptions - Apple Support

Once Automatic Renewal has been turned off, the subscription will end at the end of the current subscription period.

See this link to manage your monthly purchases and reoccurring charges:

View, change, or cancel your subscriptions - Apple Support

There is no malware for a non jailbroken iOS device