Abstract: A real-time survey system can monitor real-time event and interaction data generated as a user interacts with an application. Using the event data in combination with static user attributes, the survey system can identify a subset of microsurveys a user is eligible to receive or participate in. Identifying eligibility can include applying one or more filters based on user attributes as well as detecting a triggering event that signals real-time relevance of the survey to the user's actions. If the user is eligible for multiple surveys, the survey system can select a single survey to send to the user. Surveys can be presented to users directly using the real-time survey system instead of via an alternate delivery method, such as email. After collecting survey data, survey system can automatically analyze survey responses, including by performing machine learning based thematic analysis on freeform text responses.

Abstract: A real-time survey system can monitor real-time event and interaction data generated as a user interacts with an application. Using the event data in combination with static user attributes, the survey system can identify a subset of microsurveys a user is eligible to receive or participate in. Identifying eligibility can include applying one or more filters based on user attributes as well as detecting a triggering event that signals real-time relevance of the survey to the user's actions. If the user is eligible for multiple surveys, the survey system can select a single survey to send to the user. Surveys can be presented to users directly using the real-time survey system instead of via an alternate delivery method, such as email. After collecting survey data, survey system can automatically analyze survey responses, including by performing machine learning based thematic analysis on freeform text responses.

Abstract: A real-time survey system can monitor real-time event and interaction data generated as a user interacts with an application. Using the event data in combination with static user attributes, the survey system can identify a subset of microsurveys a user is eligible to receive or participate in. Identifying eligibility can include applying one or more filters based on user attributes as well as detecting a triggering event that signals real-time relevance of the survey to the user's actions. If the user is eligible for multiple surveys, the survey system can select a single survey to send to the user. Surveys can be presented to users directly using the real-time survey system instead of via an alternate delivery method, such as email. After collecting survey data, survey system can automatically analyze survey responses, including by performing machine learning based thematic analysis on freeform text responses.

Abstract: Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol. A request for an application to access data that is associated with the heightened authentication protocol is received at the cloud-based storage service. The request may include an indication that the application is configured to interact with data with the heightened authentication protocol. The request is authenticated based on the heightened authentication protocol. In response to authenticating the first request, permission is granted to the application to access the data that is associated with the heightened authentication protocol. In response receiving requests that do not include the indication that the application is configured to interact with data with the heightened authentication protocol, data pertaining to the portion of the data with the heightened authentication protocol is hidden.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A first request to cause a portion of the data to be associated with a heightened authentication protocol is received. In response, the portion of the data is caused to require the heightened authentication protocol for access. A second request for a file that is stored in the area that is associated with the heightened authentication protocol is received. The second request is authenticated based on the heightened authentication protocol. In response to authenticating the second request, permission is granted to access the file. In response to a failure to authenticate the second request, access to the file is denied, while access to files stored in other areas associated with the user account is allowed.

Abstract: A system is provided for facilitating access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol. A request for an application to receive data that is associated with the heightened authentication protocol is received at the cloud-based storage service. In response to the request, the request is authenticated based on the heightened authentication protocol. In response to authenticating the request, permission is granted for the application to receive the data that is associated with the heightened authentication protocol. In response to a locking of the data that is associated with the heightened authentication protocol, an indication that the data is unavailable is sent to the application.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. A first request is received to access data stored at the cloud-based storage service, the data associated with a user account. The first request is authenticated based on a username and password associated with the user account. A second request is received for a file that is stored in an area associated with a heightened authentication protocol. The heightened authentication protocol is performed to authenticate the second request. In response to authenticating the second request, permission is granted to a temporary strong authentication state. The permission is to access the file that is stored in the area associated with the heightened authentication protocol.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. A first request is received to access data stored at the cloud-based storage service, the data associated with a user account. The first request is authenticated based on a username and password associated with the user account. A second request is received for a file that is stored in an area associated with a heightened authentication protocol. The heightened authentication protocol is performed to authenticate the second request. In response to authenticating the second request, permission is granted to a temporary strong authentication state. The permission is to access the file that is stored in the area associated with the heightened authentication protocol.

Abstract: A cloud storage server receives a detection notification from a client device. The cloud storage server is configured to store files received from the client device. The detection notification indicates a ransomware activity detected by the client device. The cloud storage server receives a remediation notification from the client device. The remediation notification indicates that the ransomware activity has been remediated by the client device. The cloud storage server updates an operation of a server-based ransomware detection application based on the detection notification and the remediation notification.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol, a first request receiving, at the cloud-based storage service, for an application to access data that is associated with the heightened authentication protocol. The first request is authenticated based on the heightened authentication protocol. In response to authenticating the first request, permission is granted to the application to access the data that is associated with the heightened authentication protocol. The permission is time-limited. It is determined that the application is editing the data that is associated with the heightened authentication protocol. Permission for the application to access the data while the application is editing the data is temporarily extended.

Abstract: A cloud storage server accesses a plurality of server-stored files of a cloud storage account of a client device and determines that one or more compromised server-stored files from the plurality of server-stored files are affected by a malware activity. The cloud storage server determines a plurality of recovery options based on an identification of the one or more compromised server-stored files and the time at which changes to the one or more compromised server-stored files became affected by the malware activity. The plurality of recovery options comprises a suggested restore point identifying a restore time to which changes to the one or more compromised server-stored files are reverted. The cloud storage server transmits a recovery notification that indicates the plurality of recovery options to the client device.

Abstract: A system is provided for facilitating access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol. A request for an application to receive data that is associated with the heightened authentication protocol is received at the cloud-based storage service. In response to the request, the request is authenticated based on the heightened authentication protocol. In response to authenticating the request, permission is granted for the application to receive the data that is associated with the heightened authentication protocol. In response to a locking of the data that is associated with the heightened authentication protocol, an indication that the data is unavailable is sent to the application.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. A first request is received to access data stored at the cloud-based storage service, the data associated with a user account. The first request is authenticated based on a username and password associated with the user account. A second request is received for a file that is stored in an area associated with a heightened authentication protocol. The heightened authentication protocol is performed to authenticate the second request. In response to authenticating the second request, permission is granted to a temporary strong authentication state. The permission is to access the file that is stored in the area associated with the heightened authentication protocol.

Abstract: Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol. A request for an application to access data that is associated with the heightened authentication protocol is received at the cloud-based storage service. The request may include an indication that the application is configured to interact with data with the heightened authentication protocol. The request is authenticated based on the heightened authentication protocol. In response to authenticating the first request, permission is granted to the application to access the data that is associated with the heightened authentication protocol. In response receiving requests that do not include the indication that the application is configured to interact with data with the heightened authentication protocol, data pertaining to the portion of the data with the heightened authentication protocol is hidden.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A portion of the data is associated with a heightened authentication protocol. a first request receiving, at the cloud-based storage service, for an application to access data that is associated with the heightened authentication protocol. The first request is authenticated based on the heightened authentication protocol. In response to authenticating the first request, permission is granted to the application to access the data that is associated with the heightened authentication protocol. The permission is time-limited. It is determined that the application is editing the data that is associated with the heightened authentication protocol. Permission for the application to access the data while the application is editing the data is temporarily extended.

Abstract: A system is provided for controlling access to data stored in a cloud-based storage service. Data associated with a user account is stored at the cloud-based storage service. A first request to cause a portion of the data to be associated with a heightened authentication protocol is received. In response, the portion of the data is caused to require the heightened authentication protocol for access. A second request for a file that is stored in the area that is associated with the heightened authentication protocol is received. The second request is authenticated based on the heightened authentication protocol. In response to authenticating the second request, permission is granted to access the file. In response to a failure to authenticate the second request, access to the file is denied, while access to files stored in other areas associated with the user account is allowed.

Abstract: Systems and methods for restoring a file system to a point-in-time without relying on a backup. One system includes an electronic processor configured to automatically restore a file system to a specified point-in-time by (a) automatically restoring, from a recycle bin, items deleted from the file system after the point-in-time, (b) automatically deleting, from the file system, items created within the file system after the point-in-time, (c) automatically moving items moved within the file system after the point-in-time to a location within the file system associated with the point-in-time, (d) automatically deleting, from the file system, items copied within the file system after the point-in-time, (e) automatically renaming items renamed within the file system after the point-in-time to a name associated with the point-in-time, and (f) automatically restoring, from a version history, a version associated with the point-in-time for items with content modified after the point-in-time.

Abstract: Variety of approaches to provide partial storage of large files in distinct storage systems are described. A storage service initiates operations to provide storage of large files by determining a rapid access portion and a slow access portion of a file. The rapid access portion of the file is stored in a rapid access storage system and the slow access portion of the file (or an entirety of the file) is stored in a slow access storage system. In response to an access request to the file, the rapid access portion of the file is provided from the rapid access storage system. Next, the slow access portion of the file is retrieved from the slow access storage system to be provided while providing the rapid access portion of the file.

Abstract: A cloud storage server accesses a plurality of server-stored files of a cloud storage account of a client device and determines that one or more compromised server-stored files from the plurality of server-stored files are affected by a malware activity. The cloud storage server determines a plurality of recovery options based on an identification of the one or more compromised server-stored files and the time at which changes to the one or more compromised server-stored files became affected by the malware activity. The plurality of recovery options comprises a suggested restore point identifying a restore time to which changes to the one or more compromised server-stored files are reverted. The cloud storage server transmits a recovery notification that indicates the plurality of recovery options to the client device.

Abstract: A cloud storage server receives a detection notification from a client device. The cloud storage server is configured to store files received from the client device. The detection notification indicates a ransomware activity detected by the client device. The cloud storage server receives a remediation notification from the client device. The remediation notification indicates that the ransomware activity has been remediated by the client device. The cloud storage server updates an operation of a server-based ransomware detection application based on the detection notification and the remediation notification.