Emc IP Holding Company LLC

Ofri Mann

Kineret Raviv

Eyal Kolman

Uri Fleyder

Alon Kaufman

Marcelo Blatt

Richard Chiles

Dan Karpati

Methods and apparatus are provided for detecting suspicious network activity, such as in an enterprise network. An exemplary method comprises obtaining network event data for a plurality of user-server communications for a given user, determining a number of distinct servers the user communicated with during a predefined time window; determining a number of distinct servers the user failed in authenticating to during the predefined time window; and assigning a risk score to the user based on the number of distinct servers the user communicated with and the number of distinct servers the user failed in authenticating to during the predefined time window. Generally, the risk score provides a measure of an anomalousness of the user communicating with the number of servers during the predefined time window. An absolute score is optionally assigned based on an evaluation of the number of distinct servers the user communicated with during the predefined time window relative to a predefined threshold number.

Methods and apparatus for detecting suspicious network activity

Methods and apparatus are provided for detecting suspicious network activity by new devices. An exemplary method comprises: obtaining network event data for a given entity that comprises a user or a user device; determining a number of distinct other entities associated with the given entity during a predefined short time window, wherein the distinct other entities comprise user devices used by the user if the given entity comprises a user and comprise users of the user device if the given entity comprises a user device; determining a number of distinct other entities associated with the given entity during a predefined longer time window; and assigning a risk score to the given entity based on (i) the number during the predefined short time window relative to the number during the predefined longer time window, and/or (ii) the number during the predefined short time window relative to a predefined number.

Methods and apparatus for detecting suspicious network activity by new devices

Disclosed are techniques for use in assessing the risk of electronic communications using logon types. In one embodiment, the techniques comprise a method. The method comprises receiving an electronic communication relating to a login request involving a user and a provider of a computerized resource. The method comprises determining a logon type associated with the logon request. The method comprises determining a first value relating to an amount of logon requests associated with the logon type involving the user and the provider over a first time period and a second value relating to an amount of logon requests associated with the logon type involving the user and the provider over a second time period that is greater than the first time period. The method comprises generating a risk score describing the risk associated with the logon request based on the first and the second values.

Method, apparatus and computer program product for assessing the risk of electronic communications using logon types

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Tel Aviv, Israel

Ofri Mann