Abstract: A method for protecting against malware when a client computer causes file operations at a server computer, comprising: gathering, by the server computer, information for each file operation performed into an event, the information including at least a identifier and a type of the operation, developing, not by the client computer, an event-level feature vector including at least two features which are numerical data representing an aspect of the gathered information for each event; grouping the event-level feature vectors into a file-level feature vector for each file; supplying, not by the client computer, the file-level feature vectors to a trained machine learning classifier and receiving as an output of the classifier at least one risk score indicating a likelihood of a presence of malware activity; and when malware activity is indicated by an aggregate risk score based on the at least one risk score, initiating incident handling.

Abstract: A method and system method for reading a file from a cloud storage service are provided. The method includes receiving, from a client device, a request to read at least a portion of a file from a cloud storage service, wherein the cloud storage service is associated with at least one object storage system; and sending a cloud file descriptor to the client device, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve objects constituting the requested at least a portion of the file from the at least one object storage system.

Abstract: A method for storing a file in cloud storage service (CSS) having a blocks index indexing blocks each having a unique block identifier, the entries thereof indicating for each block identifier a location of the block within an object storage system (OSS), the method comprising: the CSS transmitting a list of block identifiers indicating respective blocks that are not in the blocks index but which are indicated by a received file map for the file; adding an entry into the blocks index to indicate a location of uploaded blocks within the OSS for each block of the list and that has been successfully uploaded to the OSS; and when all of the blocks have been successfully uploaded, concatenating all blocks of the received file map in an order specified by the received file map to form a file object corresponding to the file in the OSS.

Abstract: A method for storing a file in cloud storage service (CSS) having a blocks index indexing blocks each having a unique block identifier, the entries thereof indicating for each block identifier a location of the block within an object storage system (OSS), the method comprising: the CSS transmitting a list of block identifiers indicating respective blocks that are not in the blocks index but which are indicated by a received file map for the file; adding an entry into the blocks index to indicate a location of uploaded blocks within the OSS for each block of the list and that has been successfully uploaded to the OSS; and when all of the blocks have been successfully uploaded, concatenating all blocks of the received file map in an order specified by the received file map to form a file object corresponding to the file in the OSS.

Abstract: A method and system for accessing a file in a global file system. The method includes sending, from a client device to a global file system storing a file, a request to access a portion of the file, wherein the global file system includes at least one object storage system and at least one server, wherein the data of the file is stored in a plurality of objects stored in the at least one object storage system; receiving a cloud file descriptor from the at least one server, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve at least one object of the plurality of objects from the at least one object storage system, wherein the at least one object includes the requested portion of the file; and accessing the portion of the file using the cloud file descriptor.

Abstract: A method and system method for reading a file from a cloud storage service are provided. The method includes receiving, from a client device, a request to read at least a portion of a file from a cloud storage service, wherein the cloud storage service is associated with at least one object storage system; and sending a cloud file descriptor to the client device, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve objects constituting the requested at least a portion of the file from the at least one object storage system.

Abstract: A method and system method for reading a file from a cloud storage service are provided. The method includes receiving, from a client device, a request to read at least a portion of a file from a cloud storage service, wherein the cloud storage service is associated with at least one object storage system; and sending a cloud file descriptor to the client device, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve objects constituting the requested at least a portion of the file from the at least one object storage system.

Abstract: A method for use in a computing device having a storage arranged in accordance with a local file system to seamlessly access information for files of a cloud storage system (CSS), the storage being separate from the CSS. The method comprises: receiving, by the computing device, metadata for at least one directory of the CSS; creating in the local file system, based on the received metadata for the at least one directory, a directory structure consisting of at least one directory, the directory structure being in correspondence with the structure of the at least one directory of the CSS for which the metadata was received; and upon receiving a request for a listing of a directory in the CSS, providing the directory listing directly, based on the directory structure of the local file system, for directories of the CSS for which, and to the extent, that metadata was received.

Abstract: A method for synchronizing data files between a client device and a cloud storage service (CSS). The method comprises marking each data file that has been changed since a last synchronization between the client device and the CSS; dividing each marked data file into a plurality of blocks; assigning each block with a unique code; determining, based on the assigned the unique codes, a set of modified blocks from among the plurality of blocks; and synchronizing the set of modified blocks such that the CSS and the client device include a consistent version of each data file that has changed.

Abstract: A method and system for providing invitation links with enhanced protection are presented. The method includes sending, to at least one invitee, at least one invitation link for accessing the protected resource, wherein the at least one invitation link includes a secret invitation code encoded therein, wherein the secret invitation code is unique to each invitee, the invitation link is sent to the at least one invitee through a primary communication channel; upon detecting an attempt to access the at least one invitation link, determining whether the encoded secret invitation code matches a known secret invitation code; upon determining that the secret invitation code matches the known secret invitation code, performing a verification process to authenticate the invitee via a secondary channel of communication; and upon determining that the verification process has been passed, granting access to the protected resource.

Abstract: A method for use in an endpoint device having a local storage system, to seamlessly access files in a cloud storage system. The method comprises: receiving, by a virtual file system driver, a request from a program running on the endpoint to access data within a file in a unified virtual file system, the local storage system being configured to maintain files, each file therein being in a stub or non-stub state and also being in a synchronized or a non-synchronized state, retrieving a portion of the file containing some of the requested data from the cloud storage system when the file is in a stub state; making the retrieved portion of the file available to the program upon being successfully retrieved; and maintaining the file in the non-stub and synchronized state for a period of time based on a determination that the file should be synchronized locally.

Abstract: A system and method for cache pre-warming. The method includes creating a list of files likely to be accessed by a destination filesystem based on at least one access pattern of a source filesystem, the destination filesystem having a cache, wherein the list indicates a first plurality of files; and copying a second plurality of files from the source filesystem to the destination filesystem, wherein the second plurality of files includes the first plurality of files, wherein the destination filesystem is configured to prefetch files indicated in the list and to store the prefetched files in the cache.

Abstract: A method and system for accessing a file in a global file system. The method includes sending, from a client device to a global file system storing a file, a request to access a portion of the file, wherein the global file system includes at least one object storage system and at least one server, wherein the data of the file is stored in a plurality of objects stored in the at least one object storage system; receiving a cloud file descriptor from the at least one server, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve at least one object of the plurality of objects from the at least one object storage system, wherein the at least one object includes the requested portion of the file; and accessing the portion of the file using the cloud file descriptor.

Abstract: A method and system method for reading a file from a cloud storage service are provided. The method includes receiving, from a client device, a request to read at least a portion of a file from a cloud storage service, wherein the cloud storage service is associated with at least one object storage system; and sending a cloud file descriptor to the client device, wherein the cloud file descriptor includes a plurality of download tokens utilized to retrieve objects constituting the requested at least a portion of the file from the at least one object storage system.

Abstract: A method and system for an optimized transfer of data files to a cloud storage service (CSS) are presented. The method comprises dividing a data file into a plurality of data blocks; assigning a block code to each of the plurality of data blocks; generating, based on a contract with the CSS, a first list of block codes from the plurality of data blocks, wherein the contract defines at least data blocks guaranteed to exist in the CSS; querying the CSS with the first list of block codes; responsive of the query, receiving a second list of block codes from the CSS, wherein the second list of block codes includes block codes of data blocks designated in the first list of block codes but missing in the CSS; and transmitting to the CSS data blocks designated by their block codes in the second list.

Abstract: A system and method for securely sharing files from a cloud storage are provided. The method includes capturing an electronic message sent by a client device, the electronic message designating at least one recipient, wherein the electronic message includes at least one attachment; identifying the at least one attachment and the at least one recipient designated in the electronic message; sending, to a cloud storage system (CSS), a list indicating the identified at least one recipient; receiving, from the CSS, a link to a shared folder, wherein the shared folder is in the CSS; replacing, in the electronic message, the at least one attachment with the received link; uploading, to the shared folder, at least one of the at least one attachment; and sending, to the at least one recipient, the electronic message with the replaced link, wherein at least one authentication procedure is applied for one of the at least one recipient upon activation of the replaced link by the recipient.

Abstract: A method for synchronizing data files between a client device and a cloud storage service (CSS). The method comprises marking each data file that has been changed since a last synchronization between the client device and the CSS; dividing each marked data file into a plurality of blocks; assigning each block with a unique code; determining, based on the assigned the unique codes, a set of modified blocks from among the plurality of blocks; and synchronizing the set of modified blocks such that the CSS and the client device include a consistent version of each data file that has changed.

Abstract: A distributed storage system for allowing an access to a plurality of cloud storage systems is provided. The system includes a plurality of cloud storage systems (CSSs); and a plurality of computing devices, wherein the plurality of computing devices are in close proximity to each other and are geographically remote from each of the plurality of CSSs, wherein each computing device is configured to: dynamically select a best route between a CSS of the plurality of CSSs and the computing device; and establish, based on the selected best route, a data flow between the CSS and the computing device wherein the data flow is established to allow at least a storage service related to the CSS.

Abstract: A method for synchronizing data files between a client device and a cloud storage service (CSS). The method comprises marking each data file that has been changed since a last synchronization between the client device and the CSS; dividing each marked data file into a plurality of blocks; assigning each block with a unique code; determining, based on the assigned the unique codes, a set of modified blocks from among the plurality of blocks; and synchronizing the set of modified blocks such that the CSS and the client device include a consistent version of each data file that has changed.

Abstract: Methods and apparati for scanning objects stored in a cloud storage system are disclosed. In an embodiment, the method includes determining at least one object that requires scanning; scanning each of the at least one object, wherein the scanning is performed using at least one scanning engine; and synchronizing the scanning results of the at least one object with a plurality of devices connected to the cloud store system.