Detection of forged e-mail messages at e-mail gateway
US11212245B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Nov 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/279
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An e-mail message is sent from a public e-mail address via the e-mail account of a user and delivered to an e-mail gateway. The message is destined for the e-mail account of a recipient. The gateway determines that the public e-mail address is on a list of users desiring two-factor authentication. The gateway determines that the message contains an anomaly indicating fraud or possible forgery. The gateway sends a two-factor authentication message to a hidden e-mail account of the user. The user reviews the message and responds with a confirmation message either confirming that the message is legitimate or indicating that it is a forgery. If the message is legitimate the gateway allows the message to be delivered to the recipient; if not, the message remains in quarantine and is not delivered. The gateway exists at the user's corporation, the recipient's corporation or is hosted at a third-party cloud service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.