Google Chrome will gradually stop supporting non-HTTPS sources and this might affect the content that had been inserted into a campaign. As Google announced, in a series of steps, they will start blocking mixed content (https:// and http://) by default. This change will improve user privacy and security on the web, and present a clearer browser security UX to users.
The impact of this could be that emails or web campaigns viewed in Google Chrome might not display correctly.
We at Emarsys are taking the necessary steps to comply with these changes in our hosted content pieces, e.g. Media Database, and we advise you take similar measures to avoid mixed content in your campaign contents.
For more information, see Google's announcement.