Abstract: A cache is provided having a plurality of entries for storing data. In response to a given access request, lookup circuitry performs a lookup operation in the cache to determine whether one of the entries in the cache is allocated to store data associated with the memory address indicated by the given access request, with a hit indication or a miss indication being generated dependent on the outcome of that lookup operation. During a single lookup period, the lookup circuitry is configured to perform lookup operations in parallel for up to N access requests. In addition, allocation circuitry is provided that is able to determine, during the single lookup period, at least N candidate entries for allocation from amongst the plurality of entries, and to cause one of the candidate entries to be allocated for each of the up to N access requests for which the lookup circuitry generates a miss indication.

Abstract: A cache is provided having a plurality of entries for storing data. In response to a given access request, lookup circuitry performs a lookup operation in the cache to determine whether one of the entries in the cache is allocated to store data associated with the memory address indicated by the given access request, with a hit indication or a miss indication being generated dependent on the outcome of that lookup operation. During a single lookup period, the lookup circuitry is configured to perform lookup operations in parallel for up to N access requests. In addition, allocation circuitry is provided that is able to determine, during the single lookup period, at least N candidate entries for allocation from amongst the plurality of entries, and to cause one of the candidate entries to be allocated for each of the up to N access requests for which the lookup circuitry generates a miss indication.

Abstract: There is disclosed a technique for use in fraud detection. In one embodiment, the technique comprises identifying an amendment to user contactable information associated with a user profile which belongs to a user with access to a protected resource. The technique also comprises obtaining the amended user contactable information associated with the user profile. The technique further comprises providing the amended user contactable information associated with the user profile for use in processing an electronic transaction.

Abstract: Techniques of operating intrusion detection systems provide a recommendation of an intrusion detection rule to an administrator of an intrusion detection system based on the experience of another administrator that has used the rule in another intrusion detection system. For example, suppose that electronic circuitry receives a numerical rating from a first intrusion detection system that indicates whether an intrusion detection rule was effective in identifying malicious activity when used in the first intrusion detection system. Based on the received rating and attributes of the first intrusion detection system, the electronic circuitry generates a predicted numerical rating that indicates whether the intrusion detection rule is likely to be effective in identifying malicious communications when used in a second intrusion detection system.

Abstract: Methods, apparatus and articles of manufacture for risk scoring for internet protocol networks are provided herein. A method includes identifying a network to which a first network element belongs, wherein said first network element comprises corresponding risk-related information, determining each of one or more network elements previously identified as belonging to the network, and calculating a risk score assigned to the network, wherein said calculating comprises aggregating (i) the risk-related information corresponding to the first network element and (ii) risk-related information corresponding to each of the one or more network elements previously identified as belonging to the network.

Abstract: There is disclosed a technique for use in providing an assessment of authentication requests. In one embodiment, the technique comprises receiving an authentication request with post-authentication feedback and an authentication request with no post-authentication feedback. In the same embodiment, the post-authentication feedback can include a marking indicating that the request is one of a genuine or fraudulent status after review by an analyst. If a request does not possess a post-authentication feedback then it is considered genuine status. The technique can then assign the status of the requests to a distinctive attribute associated with the requests before performing a computation which produces a computational result that is indicative of the risk associated with the distinctive attribute.

Abstract: There is disclosed herein a technique for use in providing an assessment of authentication requests. In one embodiment, the technique comprises obtaining authentication data that relates to an attribute of authentication requests in a current time period and a previous time period. The technique also comprises applying a weight to the authentication data that relates to the attribute of authentication requests in the previous time period and performing a computation involving the weighted authentication data and the authentication data that relates to the attribute of authentication requests in the current time period. The computation producing a computational result. The technique still further comprises providing the computational result for use in processing future authentication requests.

Abstract: Methods, apparatus and articles of manufacture for providing an automatic electronic fraud network data quality feedback loop are provided herein. A method includes evaluating an item of input data provided by a given source, wherein the item of input data comprises a fraud-related status identifier provided by the given source, and wherein said evaluating comprises determining a level of accuracy associated with the fraud-related status identifier; outputting the determined level of accuracy associated with the fraud-related status identifier to the given source; and updating a trust measure associated with the given source based on the determined level of accuracy associated with the fraud-related status identifier provided by the given source.