By implementing a Content Security Policy, you can make use of
            browser features to mitigate many cross-site scripting attacks.
The full set of directives required for 
    
Microform Integration
 is:
  Policy  | Sandbox  | Production  | 
|---|---|---|
frame-src  | https://testflex.cybersource.com/  | https://flex.cybersource.com/  | 
child-src  | https://testflex.cybersource.com/  | https://flex.cybersource.com/  | 
script-src  | https://testflex.cybersource.com/  | https://flex.cybersource.com/  |