Technique for detecting malicious electronic messages

US10659493B2 · kind B2 · utility

Assignee

• retarus GmbH · DE

Inventors

• Martin Hager · Jena, DE
• Michael Grauvogl · Munich, DE

Key dates

• Filing date: Dec 23, 2016
• Grant date: May 19, 2020
• Expiry date: Jun 11, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F21/64
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method of detecting malicious electronic messages transmitted from at least one message sending device to at least one message receiving device includes: generating at least one signature for an electronic message; storing the generated signature in a data storage unit; determining whether the electronic message is malicious; if the electronic message is determined to be malicious, determining on the basis of the generated signature, whether electronic messages comparable to the determined malicious message were classified as non-malicious and transmitted to the message receiving device in the past; and if it is determined that electronic messages comparable to the determined malicious message were classified as non-malicious and transmitted to the message receiving device in the past, notifying the message receiving device about a potential threat. Also disclosed are a messaging server and a messaging system implementing the above described method.