Hi jhgerlach, I appreciate your concern. However, I'm not sure why you're not currently supporting sandbox attribute in iframes. It is commonly used to help prevent exactly such top-level hijacking. Google's GPT supports this feature via their safeframe mode and so do all other ad networks that I'm aware of. Is there a particular reason why Sovrn does not support the sandbox attribute as such? We've experienced a flood of complaints from the ads coming through Sovrn and it seems like this one attribute would reduce the vast majority of them.
See Google's docs for more: