Cisco Talos says hackers are abusing CSS in emails The stylesheet language is used to hide content, track people's behavior, ...

Let’s face it: The goal of sending targeted email campaigns is to inform your subscriber or customer of something great that they are missing—like a new product release, cross-sell or information ...

Users can be tracked in their emails using CSS. Similar to usage data on the web, senders of emails can collect data and thus draw conclusions about the system used. This is shown by a study conducted ...