US 12,224,973 B2
Misdirected email data loss prevention
Shalini Kamalapuram Sundaram, Sunnyvale, CA (US); Chris Moores, Owen Sound (CA); Durgaprasad Velagaleti, Sunnyvale, CA (US); Srikanth Konjarla, Sunnyvale, CA (US); and Harsh Doshi, Sunnyvale, CA (US)
Assigned to Proofpoint, Inc., Sunnyvale, CA (US)
Filed by Proofpoint, Inc., Sunnyvale, CA (US)
Filed on May 10, 2024, as Appl. No. 18/660,423.
Application 18/660,423 is a continuation of application No. 17/834,887, filed on Jun. 7, 2022, granted, now 12,021,817.
Claims priority of provisional application 63/208,481, filed on Jun. 8, 2021.
Prior Publication US 2024/0291792 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 51/23 (2022.01); G06F 21/60 (2013.01); H04L 51/21 (2022.01); H04L 51/42 (2022.01); H04L 51/56 (2022.01)
CPC H04L 51/23 (2022.05) [G06F 21/606 (2013.01); H04L 51/21 (2022.05); H04L 51/42 (2022.05); H04L 51/56 (2022.05)] 20 Claims
OG exemplary drawing
 
1. A computing platform, comprising:
at least one processor;
a communication interface communicatively coupled to the at least one processor; and
memory storing computer-readable instructions that, when executed by the at least one processor, cause the computing platform to:
identify, in real time and prior to sending a first email message, that a first target recipient domain comprises an unintended recipient domain instead of an intended recipient domain, wherein the identification comprises:
identifying, using a plurality of machine learning algorithms, first context information for the first email message, wherein identifying the first context information for the first email message comprises:
identifying, using latent Dirichlet allocation (LDA), one or more topics in the first email message,
identifying, using named entity recognition (NER), one or more named entities in the first email message, and
identifying, using text summarization, a predetermined number of most frequently used keywords in the first email message; and
send, based on identifying that the first context information does not match historical context information from historical messages for a sender of the first email message, a notification that the first target recipient domain is flagged as the unintended recipient domain and one or more commands directing a user device to display the notification.