Security researchers from firms around the web are warning of a new email exploit that hackers can use to modify the contents of an email, even after it has been sent and delivered.
Originally discovered by Francisco Ribeiro of the firm Mimecast, Ropemaker stands for “Remotely Originated Post-delivery Email Manipulation Attacks Keeping Email Risky,” and is accomplished by making creative use of Cascading Style Sheets (CSS) and simple HTML, both of which are foundational technologies that the whole of the internet is built around.