# US 12,113,813 B2 · Anti-phishing system

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- Number: US 12,113,813 B2
- Document ID: US12113813B2
- Status: Granted
- Kind: B2
- Application number: 18/376,442
- Filed: 2023-10-04
- Published: 2024-01-25
- Granted: 2024-10-08
- Earliest claimed: 2023-10-04
- Assignees: Namusoft Co., Ltd
- Applicants: Namusoft Co., Ltd
- Inventors: Jong Hyun Woo
- Web page: https://patentgrep.com/patent/US12113813B2

## CPC

- G06F 11/1446: Point-in-time backing up or restoration of persistent data
- G06F 21/554: {involving event detection and direct action}
- G06F 21/566: {Dynamic detection, i.e. detection performed at run-time, e.g. emulation, suspicious activities}
- H04L 63/1416: {Event detection, e.g. attack signature detection}
- H04L 63/1483: {service impersonation, e.g. phishing, pharming or web spoofing (detection of rogue wireless access points H04W12/12)}
- G06F 2201/80: Database-specific techniques
- G06F 2201/825: the problem or solution involving locking
- H04L 67/1095: Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Provided is a system for blocking a phishing attack including: a phishing attack prevention storage device; wherein a user terminal or a service server is connected with the phishing attack prevention storage device via a network, wherein a storage area in the phishing attack prevention storage device is mounted in a network drive at the user terminal or the service server, wherein when there is an open request for a real file stored in the storage area in the phishing attack prevention storage device from the user terminal or the service server, the phishing attack prevention storage device checks a storage operation mode and creates a fake file other than the open-requested original file when the storage operation mode corresponds to a list-only mode to return the fake file to the user terminal or the service server via the network.

## Claims

### Claim 1

A system for blocking a phishing attack comprising:
a phishing attack prevention storage device;
wherein a user terminal or a service server is connected with the phishing attack prevention storage device via a network,
wherein a storage area in the phishing attack prevention storage device is mounted in a network drive at the user terminal or the service server,
wherein when there is an open request for a real file stored in the storage area in the phishing attack prevention storage device from the user terminal or the service server,
the phishing attack prevention storage device checks a storage operation mode and creates a fake file other than the open-requested original file when the storage operation mode corresponds to a list-only mode to return the fake file to the user terminal or the service server via the network,
wherein the phishing attack prevention storage device is physically independent and separated from the user terminal or the service server.

### Claim 2 (depends on 1)

The system for blocking the phishing attack of claim 1, wherein the fake file has the same file capacity as the original file to be open-requested, and a file text is filled with a null value or an unknown value.