(19)
(11) EP 3 528 461 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
22.06.2022 Bulletin 2022/25

(45) Mention of the grant of the patent:
27.04.2022 Bulletin 2022/17

(21) Application number: 19158046.3

(22) Date of filing: 19.02.2019
(51) International Patent Classification (IPC): 
H04L 29/06(2006.01)
H04L 12/58(2006.01)
 G06F 21/55(2013.01)
(52) Cooperative Patent Classification (CPC):
H04L 63/1425; H04L 63/1441; G06F 21/554; G06F 21/556; H04L 67/12; H04L 51/18; H04L 51/212

(54)

A CYBER THREAT DEFENSE SYSTEM PROTECTING EMAIL NETWORKS WITH MACHINE LEARNING MODELS

CYBERBEDROHUNGVERTEIDIGUNGSSYSTEM ZUM SCHUTZ VON E-MAIL-NETZWERKEN MIT MODELLEN DES MASCHINELLEN LERNENS

SYSTÈME DE DÉFENSE CONTRE LES CYBER-MENACES PROTÉGEANT LES RÉSEAUX DE MESSAGERIE ÉLECTRONIQUE À L'AIDE DE MODÈLES D'APPRENTISSAGE AUTOMATIQUE

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 20.02.2018 US 201862632623 P

(43) Date of publication of application:
21.08.2019 Bulletin 2019/34

(73) Proprietor: Darktrace Holdings Limited
Cambridge, Cambridgeshire CB4 0DS (GB)

(72) Inventors:
  • DUNN, Matthew
    Cambridge, Cambridgeshire CB4 0DS (GB)
  • FERGUSON, Matthew
    Cambridge, Cambridgeshire CB4 0DS (GB)
  • SHERWIN, Matthew
    Cambridge, Cambridgeshire CB4 0DS (GB)

(74) Representative: Sackin, Robert 
Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street
London E1 8QS
London E1 8QS (GB)


(56) References cited: : 
US-A1- 2015 319 185
US-B1- 9 773 112
 US-B1- 8 903 920
   
  • SHIH D H ET AL: "Classification methods in the detection of new malicious emails", INFORMATION SCIENCES, AMSTERDAM, NL, vol. 172, no. 1-2, 9 June 2005 (2005-06-09), pages 241-261, XP027629825, ISSN: 0020-0255 [retrieved on 2005-06-09]
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).