How to change an email message AFTER it has been sent
According to a new study it was revealed that hackers can change emails after they have been sent to the Inbox. The attack scenario allows malicious parties to alter what is displayed in an email, such as editing text or swapping a harmless URL with a link to malware.
The idea is that an attacker sends an HTML email to the victim, but uses the CSS code – used in the attacker’s server. You can see examples of this type of attack and hear the opinions of experts in this article.