A system to generate a graphical user interface to display a presentation of a set of shared user groups between users of a social networking service is described. Embodiments of the present disclosure relate generally to systems for: receiving an identification of a second user from a user account of a first user; identifying a user group that includes the first user and the second user in response to the identification of the second user from the user account of the first user; retrieving user identifiers of the first user and the second user, wherein the user identifiers may include graphical avatars; generating a group identifier based on the user identifiers; and causing display of a presentation of the user group at a client device.

A method for tokenizing credentials is disclosed. In addition to a token, a verification value can be provided for each interaction. The verification value can be generated based at least in part on a dynamic data element. The dynamic data element may be kept secret, while the verification value can be distributed for use during an interaction. When the verification value is used, it can be validated by re-creating the verification value based at least on the stored dynamic data element.

Systems and methods provide an entity identifier (EID) for use in distributed systems, where the entity identifier includes inherent privacy features and where an estimate of the distinct count of the entity identifiers in a distributed system can be determined. A unique identifier (e.g., a GUID) for an entity is received. A hash value can be generated for the unique identifier using a hash function that is not guaranteed to generate unique values. An EID is created using a portion of the bits of the hash value and stored in a database. An estimated distinct count of entities based on a count of EIDs in the database can be determined based on the count of EIDs in the database and the size of the EID space.

A ticket authentication method and a ticket authentication device are provided. The ticket authentication method includes the following steps. A first electronic device outputs an e-ticket. A second electronic device acquires the e-ticket. The second electronic device outputs a visible light verification code. The first electronic device acquires the visible light verification code and generates a composite code according to a certification data and the verification code. The second electronic device acquires the visible light composite code, and determines whether the composite code matches the certification data and the verification code. When the composite code matches the certification data and the verification code, the second electronic determines that the authentication of the e-ticket is successful.

In one embodiment, an apparatus includes: a bioimpedance sensor to generate bioimpedance information based on bioimpedance sample information from at least some of a plurality of electrodes to be adapted about a portion of a person; at least one biometric sensor to generate biometric information based on biometric sample information from at least some of the plurality of electrodes; at least one environmental sensor to generate environmental context data; and an integration circuit to receive the bioimpedance information, the biometric information and the environmental context data and to adjust the bioimpedance information based at least in part on a value of one or more of the biometric information and the environmental context data. Other embodiments are described and claimed.

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for managing blockchain-based centralized ledger systems. One of the methods includes transmitting a timestamp request for a to-be-timestamped block of a blockchain at a time point to a trust time server by a ledger server in a blockchain-based centralized ledger system that stores data in the blockchain, the trust time server being associated with a trust time authority and independent from the blockchain-based centralized ledger system, the blockchain including a plurality of blocks storing transaction data, and disregarding the timestamp request in response to determining that a predetermined time period has lapsed after the time point and that there has been no reply to the timestamp request from the trust time server.

A network connection between a server group of a data intake and query system and each of one or more source network nodes is established. The server group includes an indexer server and a model management server. Source data at the server group is received from at least one of the one or more source network nodes via the respective network connections and transformed, by the indexer server, to timestamped entries of machine data. A model management server detects data constraints for a security model. The data constraints include a data element used by the security model and an availability requirement set, the availability requirement set defining when the data element is available. Using the timestamped entries, the data constraints are validated to obtain a validation result, where validating the data constraints includes determining whether the timestamped entries satisfy the availability requirement set for the data element. The model management server determines a data availability assessment of the security model based on the validation result. The data availability assessment of the security model is stored in computer storage.

A method, computer program product, and a system where a processor(s) determines that a destination has been retained as a link in an application. The processor(s) monitors connections of the application to the destination retained as the link, where connecting is providing a locator of the destination to a server(s) to obtain an address for the destination. The processor(s) determines an average time period measured from providing the locator to the server(s) to obtaining the address. The processor(s) retains the returned address for each connection within a given time period. The processor(s) determines that the application has initiated a new connection to the destination and the new connection is incomplete after a time period calculated relative to the average time period has lapsed. The processor(s) provides selectable options in a user interface of the application that are the retained address(es).

Computer-based access security includes executing a system-level boot process, by a processor configured with a computing device, as a function of at least boot code, and storing, as a function of at least one operating system kernel, a value representing a time at or near completion of the system-level boot process. The security further includes receiving, as a function of a capacitive touch screen, an electrical charge operable to cause a measurable drop in voltage. Thereafter, the security includes generating, as a function of the measured voltage drop, an image. Moreover, the security includes storing the image to processor readable media configured with the computing device, wherein storing the image includes: determining a value representing an amount of time calculated from the time of completion of the system-level boot process; and associating the value representing the amount of time with the image.

A method for providing timing security in a time sensitive network (TSN), includes monitoring TSN times in timing synchronization packets exchanged between TSN network nodes. The method further includes monitoring TSN timing values calculated by TSN network nodes. The method further includes determining, using TSN times and TSN timing values, whether a timing attack is indicated. The method further includes, in response to determining that a timing attack is indicated, performing a timing attack effects mitigation action.