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System and method for spam detectionRelated Patent Categories: Telephonic Communications, Special ServicesSystem and method for spam detection description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070165811, System and method for spam detection. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND [0001] 1. Technical Field [0002] The present invention relates to caller detection and more particularly to a system and method for determining spam and unsolicited calls. [0003] 2. Description of the Related Art [0004] Anonymity of Internet Protocol (IP) users is a key problem in providing services over the Internet. This affects all services including Voice-over-IP (VoIP) based services. While telephone fraud has always been a problem, the Internet has made this problem more serious because automation of fraud has become much easier. Therefore, it is important for both service providers and users to stop automated attacks that are delivered over IP. [0005] Session Initiation Protocol or SIP, is a signaling protocol for Internet conferencing, telephony, events notification and instant messaging. In SIP and VoIP networks, unsolicited messages and calls can be automatically generated and delivered to phones in a cheaper and faster manner than in telephone networks. [0006] Consider two types of spam: (1) Call Spam. Call Spam is where the caller wishes to successfully initiate a dialog and have a media session. For example, unsolicited calls that are automatically initiated and carried out by software using `pre-recorded` streams similar to telemarketing calls today. (2) Call initiation spam. Call initiation spam is where the caller does not wish to successfully initiate a dialog and have a media session. For example, unsolicited INVITE spam with spoofed SIP URIs or IP addresses. [0007] While telephone network spam (telemarketing) may be solved using legislation, IP networks cross international borders and spammers may not be in a jurisdiction in which certain laws apply. Email spam issues may be solved using spam filters that passively analyze headers and content contained in individual email messages. This is not guaranteed to be effective because headers can be forged or spoofed. Further, content analysis is not guaranteed to be effective for VoIP spam because content cannot be analyzed until a call is already established and the content has already being transmitted. [0008] Third party infrastructure services such as reputation systems and consent-based communications can be used to verify callers. However, third party infrastructure services require both caller and callee to participate in such systems. SUMMARY [0009] The present addresses several problems. These problems may be illustrated as, for example, when a service provider wants to ensure that a human being is accessing the provided service and not some automated attack script, or when a user of the telephone service wants to prevent automated phone spam. There are no known commercial solutions to these problems since the technology is still relatively new and the attacks over IP have not been completely automated. [0010] A caller verification system and method include generating a challenge to be sent to a caller which requires a response from the caller prior to accepting a call. A response or lack thereof is determined from the caller, and the response is analyzed relative to an acceptable response to determine whether the caller is acceptable to communicate with. If the caller is acceptable, the call may be accepted. [0011] A system for caller verification includes a challenge generator which generates challenges to be sent to a caller responsive to an initiation by the caller for communications, the challenge requiring a response. A determination module determines if a response has been received and receives the response from the caller. An analyzing device determines if the response is acceptable as compared to an acceptable response to determine whether the caller is acceptable to communicate with. [0012] These and other objects, features and advantages will become apparent from the following detailed description of illustrative embodiments thereof, which is to be read in connection with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS [0013] The disclosure will provide details in the following description of preferred embodiments with reference to the following figures wherein: [0014] FIG. 1 is a block/flow diagram for verification of an acceptable user and/or detecting spam in a human test in accordance with one embodiment of the present invention; [0015] FIG. 2 is a diagram showing verification of an acceptable user and/or detecting spam in an echo test where the caller is not a spammer in accordance with one embodiment of the present invention; [0016] FIG. 3 is a diagram showing verification of an acceptable user and/or detecting spam in an echo test where the caller is a spammer determined by receiving an irregular response in accordance with one embodiment of the present invention; [0017] FIG. 4 is a diagram showing verification of an acceptable user and/or detecting spam in an echo test where the caller is a spammer determined by receiving an no response in accordance with one embodiment of the present invention; [0018] FIG. 5 is a block/flow diagram showing verification of an acceptable user and/or detecting spam for a human test in accordance with one embodiment of the present invention; [0019] FIG. 6 is a block diagram showing a system for verification of an acceptable user and/or detecting spam in accordance with one embodiment of the present invention; and [0020] FIG. 7 is a block/flow diagram showing verification of an acceptable user and/or detecting spam for the echo test in accordance with another embodiment of the present invention. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Continue reading about System and method for spam detection... Full patent description for System and method for spam detection Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this System and method for spam detection patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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