Patents by Inventor Chi Hing NG
Chi Hing NG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11954203Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the unmanaged profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the unmanaged portion of memory. It is determined from the file tree structure information that the mobile device has been compromised and, based on that determination, an action is taken.Type: GrantFiled: February 1, 2023Date of Patent: April 9, 2024Assignee: BlackBerry LimitedInventors: Chang Fung Yang, Robert Joseph Lombardi, Chi Hing Ng, Johnathan George White
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Publication number: 20230224307Abstract: Methods and devices for determining whether a mobile device has been compromised. File tree structure information for the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in a portion of memory. The file tree structure information is analyzed to determine that the mobile device has been compromised, has not been compromised, or might be compromised. Based on determining that the mobile device might be compromised, the mobile device is instructed to execute a restricted action. If the restricted action occurs on the mobile device then it is determined that the mobile device has been compromised. Based on that determination, an action is taken.Type: ApplicationFiled: March 14, 2023Publication date: July 13, 2023Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Robert Joseph LOMBARDI, Chi Hing NG, Johnathan George WHITE
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Publication number: 20230185914Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the unmanaged profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the unmanaged portion of memory. It is determined from the file tree structure information that the mobile device has been compromised and, based on that determination, an action is taken.Type: ApplicationFiled: February 1, 2023Publication date: June 15, 2023Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Robert Joseph LOMBARDI, Chi Hing NG, Johnathan George WHITE
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Patent number: 11645402Abstract: Methods and devices for determining whether a computing device has been compromised. File tree structure information for the computing device is obtained that details at least a portion of a tree-based structure of folders and files in a memory on the computing device. It is then determined from the file tree structure information that the computing device is compromised and, based on the determination that the computing device has been compromised, an action is taken.Type: GrantFiled: August 15, 2019Date of Patent: May 9, 2023Assignee: BlackBerry LimitedInventors: Chang Fung Yang, Chi Hing Ng, Robert Joseph Lombardi, Johnathan George White
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Patent number: 11632377Abstract: Methods and devices for determining whether a mobile device has been compromised. File tree structure information for the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in a portion of memory. The file tree structure information is analyzed to determine that the mobile device has been compromised, has not been compromised, or might be compromised. Based on determining that the mobile device might be compromised, the mobile device is instructed to execute a restricted action. If the restricted action occurs on the mobile device then it is determined that the mobile device has been compromised. Based on that determination, an action is taken.Type: GrantFiled: August 15, 2019Date of Patent: April 18, 2023Assignee: BlackBerry LimitedInventors: Chang Fung Yang, Robert Joseph Lombardi, Chi Hing Ng, Johnathan George White
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Patent number: 11599639Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the unmanaged profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the unmanaged portion of memory. It is determined from the file tree structure information that the mobile device has been compromised and, based on that determination, an action is taken.Type: GrantFiled: August 15, 2019Date of Patent: March 7, 2023Assignee: BlackBerry LimitedInventors: Chang Fung Yang, Robert Joseph Lombardi, Chi Hing Ng, Johnathan George White
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Patent number: 11343258Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the managed profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the managed portion of memory. It is determined from the file tree structure information that the mobile device has been compromised and, based on that determination, an action is taken.Type: GrantFiled: August 15, 2019Date of Patent: May 24, 2022Assignee: BlackBerry LimitedInventors: Chang Fung Yang, Robert Joseph Lombardi, Chi Hing Ng, Johnathan George White
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Publication number: 20210051158Abstract: Methods and devices for determining whether a mobile device has been compromised. File tree structure information for the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in a portion of memory. The file tree structure information is analyzed to determine that the mobile device has been compromised, has not been compromised, or might be compromised. Based on determining that the mobile device might be compromised, the mobile device is instructed to execute a restricted action. If the restricted action occurs on the mobile device then it is determined that the mobile device has been compromised. Based on that determination, an action is taken.Type: ApplicationFiled: August 15, 2019Publication date: February 18, 2021Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Robert Joseph LOMBARDI, Chi Hing NG, Johnathan George WHITE
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Publication number: 20210049287Abstract: Methods and devices for determining whether a computing device has been compromised. File tree structure information for the computing device is obtained that details at least a portion of a tree-based structure of folders and files in a memory on the computing device. It is then determined from the file tree structure information that the computing device is compromised and, based on the determination that the computing device has been compromised, an action is taken.Type: ApplicationFiled: August 15, 2019Publication date: February 18, 2021Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Chi Hing NG, Robert Joseph LOMBARDI, Johnathan George WHITE
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Publication number: 20210049273Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the unmanaged profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the unmanaged portion of memory. It is determined from the file tree structure information that the mobile device has been compromised and, based on that determination, an action is taken.Type: ApplicationFiled: August 15, 2019Publication date: February 18, 2021Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Robert Joseph LOMBARDI, Chi Hing NG, Johnathan George WHITE
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Publication number: 20210051156Abstract: Methods and devices for determining whether a mobile device has been compromised. The mobile device has a managed portion of memory and an unmanaged portion of memory, a managed profile and an unmanaged profile, and the managed profile includes files stored in the managed portion of memory and the unmanaged profile includes files stored in the unmanaged portion of memory. The managed profile is governed by a device policy set by a remote administrator. File tree structure information for the managed profile of the mobile device is obtained that details at least a portion of a tree-based structure of folders and files in the managed portion of memory.Type: ApplicationFiled: August 15, 2019Publication date: February 18, 2021Applicant: BlackBerry LimitedInventors: Chang Fung YANG, Robert Joseph LOMBARDI, Chi Hing NG, Johnathan George WHITE