In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.

In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.

In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.

A surveillance system connectable to a network, comprising a communication module and a management module; said system being configured to, during an initialization phase: a. intercept a first message being sent to a first device; b. intercept a second message said second message being a response from the first device to the first message; c. calculate a time interval between the interception of the first message and the second message; d. repeat the steps a. to c. to determine further time intervals; e. determine a distribution of said time intervals; f. store the distribution and during a surveillance phase, intercept a third message said message being sent to the first device; intercept a fourth message said fourth message being a response to the third message; calculate a new time interval between the interception of the third and fourth messages; and verify that the new time interval is within the distribution.

An authorizing party determines an authorization record set that needs to be revoked, where an authorization record included in the authorization record set corresponds to a token that is issued to an authorized party after the authorizing party grants access to the authorized party, and where each authorization record includes an authorization validation moment for a corresponding token. A time validity attribute of the authorization record set is configured. For a specific point-in-time, a value associated with the time validity attribute is set. A determination is performed as to whether the authorization record is revoked based on the authorization validation moment and the value associated with the time validity attribute.

An authorizing party determines an authorization record set that needs to be revoked, where an authorization record included in the authorization record set corresponds to a token that is issued to an authorized party after the authorizing party grants access to the authorized party, and where each authorization record includes an authorization validation moment for a corresponding token. A time validity attribute of the authorization record set is configured. For a specific point-in-time, a value associated with the time validity attribute is set. A determination is performed as to whether the authorization record is revoked based on the authorization validation moment and the value associated with the time validity attribute.

Methods and systems are described in which a system provides a user interface to confirm whether to review or take an action associated with an untrusted email. A driver on a device monitors the startup of any processes. Responsive to monitoring, the driver detects an application process that was created that indicates than an application was launched, and notifies a user console about the creation of the application process. The user console determines if the application process is of significance, if so, it injects a monitor library into the process. Once injected into the process, the monitor library detects if the application process receives an action of a user to access a domain that is not identified as trusted. The monitor library notifies the user console of the user's URL-access request.

A system for monitoring actual access to data elements in an enterprise computer network and providing associated data, the system including an at least near real time data element audit subsystem providing audit output data including at least one of a time stamp, identification of an accessor, user depository stored data regarding the accessor, accessed data element data, affected data element data, type of access operation, source IP address of access and access outcome data, in at least near real time, relating to actual access to data elements in the enterprise computer network, and an additional data providing subsystem receiving in at least near real time at least a part of the audit output data and utilizing the at least part of the audit output data for providing additional data which is not part of the audit output data.

A communication device is a communication device connected to a mobility network which is a network mounted in a mobility and which is used by a plurality of electronic control devices for communication. The communication device includes: a holding unit which holds range information indicating a transferable path range determined for a message on the mobility network; a receiving unit which receives the message on the mobility network; and a determining unit which determines validity of the received message by using the range information.

The present disclosure is directed to systems and methods for providing protection against replay attacks on memory, by refreshing or updating encryption keys. The disclosed replay protected computing system may employ encryption refresh of memory so that unauthorized copies of data are usable for a limited amount of time (e.g., 500 milliseconds or less). The replay protected computing system initially encrypts protected data prior to storage in memory. After a predetermined time or after a number of memory accesses have occurred, the replay protected computing system decrypts the data with the existing key and re-encrypts data with a new key. Unauthorized copies of data (such as those made by an adversary system/program) are not refreshed with subsequent new keys. When an adversary program attempts to use the unauthorized copies of data, the unauthorized copies of data are decrypted with the incorrect keys, which renders the decrypted data unintelligible.