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US 12,223,071 B2Granted
Protecting device and protecting method
AssigneeNippon Telegraph and Telephone Corporation
InventorsKazumi Kinoshita, Takeshi Nagayoshi, Kimihiro Yamakoshi
Life of this patent
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Abstract
A protection device includes a memory, and processing circuitry coupled to the memory and configured to acquire a list of file paths of predetermined protection target files, and perform an operation of protecting data of a file corresponding to a file path included in the list.
Claims7
A protection device comprising:
- a memory;
- and
- processing circuitry coupled to the memory and configured to:
- acquire a list of file paths of predetermined protection target files, wherein the predetermined protection target files are immutable and are prevented from deletion;
- and
- perform an operation of protecting data of a file corresponding to a file path included in the list, wherein
- the processing circuitry is further configured to:
- detect deletion of a link to the file,
- query the list for the file path to the file,
- determine the file as among the predetermined protection target files according to the list based on the file path of the file,
- restore, in response to the determination of the file as among the predetermined protection target file based on the file path of the file, the link to the file, and
- detect access by a process to the file, wherein the access includes a request to opening the file,
- in response to the detecting access to the file, acquire a combination of the file path of the accessed file and the file path of an execution file of the process of an access source, and
- deny the request to opening the file when the file path of the accessed file path exists in the list while the file path of the execution file does not exist in the list.
11 more elements
A protection method comprising:
- acquiring a list of file paths of predetermined protection target files, wherein the predetermined protection target files are immutable and are prevented from deletion;
- and
- performing an operation of protecting data of a file corresponding to a file path included in the list, by processing circuitry;
- detecting deletion of a link to the file;
- querying the list for the file path to the file,
- determining the file as among the predetermined protection target files according to the list based on the file path of the file;
- restoring, in response to the determination of the file as among the predetermined protection target files based on the file path of the file, the link to the file;
- and
- detecting access by a process to the file, wherein the access includes a request to opening the file when the file path of the accessed file path exists in the list while the file path of the execution file does not exist in the list;
- in response to the detection access to the file, acquiring a combination of the file path of the accessed file and the file path of an execution file of the process of an access source;
- and
- denying the request to opening the file.
9 more elements
Dependencies are inferred from the claim text.