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Backup protection method and system for ransomware preventing file data

A software file and file technology, applied in the field of information security, can solve the problem that users cannot choose to only backup, backup is paralyzed, and has no data recovery function, so as to save backup storage space and avoid encryption threats.

Active Publication Date: 2017-03-08
福建平实科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Disadvantage 1. Since the copy backup does not have the function of data recovery after being changed, it cannot resist ransomware attacks
[0012] Disadvantage 2. Full backup is not suitable for fighting ransomware because it needs to take up a large amount of backup storage space.
[0013] Disadvantage 3. Differential backup and incremental backup are mainly backup methods designed for regular backup, which are not suitable for regular backup, so they are not suitable for fighting against ransomware (because if you do not have the attribute of regular backup, then you will be blackmailed After the software is encrypted, all changed data during the time interval between regular backup and encryption will be encrypted)
[0014] Disadvantage 4. In the face of ransomware attacks, from the backup logic, there are the following defects:
[0015] 1. If you do not set a backup limit for the size of a single backup file, the ransomware will repeatedly write large junk files with different data
And the backup system will keep backing up, when these junk files fill up the maximum value of the backup storage medium, it will cause the backup to be paralyzed
After the paralysis, the user can modify the file normally and you can't back it up.
[0016] 2. If the upper limit of the backup size of a single file backup is set, then the files exceeding the upper limit cannot be backed up
[0017] Disadvantage 5. The above-mentioned backup methods are basically general-purpose backups (all types of files are backed up) in practical applications, and users cannot choose to back up only bmp and doc files, for example.
Therefore, there is currently no backup and protection solution that can effectively defend against ransomware file data

Method used

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  • Backup protection method and system for ransomware preventing file data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 It is the process flow of the backup protection method for defending ransomware file data according to Embodiment 1 of the present invention Figure 1 .

[0043] Such as figure 1 As shown, a backup protection method for file data against ransomware, including:

[0044] Step S100, receiving an operation request on a file.

[0045] Specifically, the file here may also include a folder, and the operation request on the file includes but not limited to the following operation requests: operations such as reading, writing, renaming, deleting, and creating on the file.

[0046] Step S102, determining whether the size of the file is smaller than a preset upper limit.

[0047] Specifically, the preset upper limit value can be adjusted by the user according to the actual situation, and the present invention does not limit the specific size of the preset upper limit value.

[0048] Step S104, if the size of the file is smaller than the preset upper limit, determine ...

Embodiment 2

[0095] figure 2 It is the backup protection system structure for defending ransomware file data according to Embodiment 2 of the present invention Figure 1 .

[0096] According to the above method, the present invention also proposes as image 3 A backup protection system for file data against ransomware, including:

[0097] The receiving module is configured to receive an operation request on a file.

[0098] The first determining module is configured to determine whether the size of the file is smaller than a preset upper limit.

[0099] The second determination module is configured to determine whether the file belongs to a preset file backup type when the size of the file is smaller than a preset upper limit.

[0100] The processing module is configured to perform an operation request on the file after backing up the file in the storage medium if the file belongs to the preset file backup type; directly execute the operation request on the file if the file does not b...

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PUM

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Abstract

The invention relates to a backup protection method and system for ransomware preventing file data. The method comprises the following steps: receiving a file operation request; determining whether the file size is less than a preset upper limit value; if the file size is less than the preset upper limit value, determining whether the file is of the preset file backup type; if the file is of the preset file backup type, backing up the file in a storage medium, and performing the file operation request; and if the file is not of the preset file backup type, directly performing the file operation request. With the adoption of the method and the system, files can be prevented from encryption threat of ransomware, and moreover, the backup storage space of the storage medium can be further saved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a backup protection method and system for defending ransomware file data. Background technique [0002] Ransomware is a type of malicious software used by hackers to hijack user assets or resources and extort money from users on the condition of this. Ransomware usually encrypts documents, emails, databases, source codes, pictures, compressed files and other files on the user's system in some form to make them unusable, or interferes with the normal use of the system by modifying the system configuration files The method reduces the availability of the system, and then sends a blackmail notice to the user through a pop-up window, dialog box, or text file, requiring the user to remit money to a designated account to obtain the password for decrypting the file or obtain a method to restore the normal operation of the system. [0003] There are mainly four known file data backup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1461
Inventor 倪茂志
Owner 福建平实科技有限公司
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