Microsoft patents screen filter that flags fake login screens
This patent describes a device that sits between a computer and a monitor to watch for signs of phishing attacks. It adds a unique security code to the screen during safe logins and displays an alert if it spots a fake security badge.
In the filing’s own words
Phishing protection utilizes a security identifier displayed in association with secure content. The identifier may be displayed separately for comparison. A security identifier may be generated by a user interface, local source, or remote source. Users may visually and/or physically confirm identifiers. An identifier may be a character string or QR code. Phishing attempts may be monitored, detected, and alerted during and outside a secure session. A device may modify images from a first computing device to a display monitor. A device interface may receive a first image from the first computing device. A detector may monitor the first image for counterfeit information. An alert generator may generate a security alert for counterfeit information. A combiner may combine with the first image, in response to a secure session, a secure image associated with a secure identifier and, in response to the detector detecting counterfeit secure information, the security alert.
What exactly they claim (claim 1)
1. A device configured to modify images from a first computing device to a display monitor, the device comprising: a processor; a memory device comprising program code structured to cause the processor to: receive a first image from the first computing device; monitor the first image for an indication of counterfeit secure information; generate a security alert in response to detecting the counterfeit secure information; in response to a secure session, generating a combined image comprising the first image combined with a secure image associated with a secure identifier, and outputting the combined image to a display; and in response to the detector detecting counterfeit secure information, combine the first image with the security alert.
Facts
- Company
- Microsoft (Microsoft Technology Licensing, LLC)
- Official title
- Phishing protection
- Patent number
- US12750401B2
- Application number
- 18590146
- Filed
- Feb 28, 2024
- Granted
- Sep 29, 2026
- Inventors
- 3
- Claims
- 20
Classified under
H04L 63/1483 Electricity & electronicsH04L 63/1416 Electricity & electronicsMore from Microsoft in Security & privacy
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.