System and method for filtering fraudulent email messages
First Claim
Patent Images
1. A method, comprising:
- a computer system receiving fraudulent email messages from a known email provider, wherein the fraudulent email messages misrepresent their origins as being from the email provider, and wherein the email provider is a subscriber to an anti-fraud service associated with the computer system;
the computer system receiving, from the email provider, information specifying a first set of characteristics present in valid email messages of the email provider and a second set of characteristics that are never present in valid email messages of the email provider, wherein the second set of characteristics specify that a uniform resource locator (URL) in a body of an email message has a host name that differs from a host name of the email provider; and
based on the fraudulent email messages and the first and second sets of characteristics, the computer system creating a first filter specific to the email provider, wherein the first filter is usable to determine whether a subsequently received email message is an email message that misrepresents its origin as being the email provider.
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Abstract
Systems and methods for filtering fraudulent email messages are described. In one embodiment, a method includes receiving an email message, determining whether the email message is indicative of fraud, and creating a fraud filter based on the email message if the email message is fraudulent.
142 Citations
16 Claims
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1. A method, comprising:
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a computer system receiving fraudulent email messages from a known email provider, wherein the fraudulent email messages misrepresent their origins as being from the email provider, and wherein the email provider is a subscriber to an anti-fraud service associated with the computer system; the computer system receiving, from the email provider, information specifying a first set of characteristics present in valid email messages of the email provider and a second set of characteristics that are never present in valid email messages of the email provider, wherein the second set of characteristics specify that a uniform resource locator (URL) in a body of an email message has a host name that differs from a host name of the email provider; and based on the fraudulent email messages and the first and second sets of characteristics, the computer system creating a first filter specific to the email provider, wherein the first filter is usable to determine whether a subsequently received email message is an email message that misrepresents its origin as being the email provider. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus comprising:
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a processor; a memory including program instructions executable by the processor to; receive phishing email messages from an email provider, wherein the phishing email messages purport to be from the email provider, and wherein the email provider is a subscriber to an anti-fraud service associated with the system; receive, from the email provider, information specifying a first set of characteristics of valid email messages of the email provider and a second set of characteristics that are never present in valid email messages of the email provider, wherein the second set of characteristics specify that a uniform resource locator (URL) in a body of an email message has a host name that differs from a host name of the email provider; based on the phishing email messages and the first and second sets of characteristics, create a first filter specific to the email provider, wherein the first filter is usable to determine whether a subsequently received email message identified as being from the email provider is a phishing message. - View Dependent Claims (9, 10, 11, 12)
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8. A non-transitory computer-readable memory having stored thereon program instructions that, if executed by a processing system, cause said processing system to:
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receive fraudulent email messages from a known email provider, wherein the fraudulent email messages misrepresent their origins as being from the email provider, and wherein the email provider is a subscriber to an anti-fraud service associated with the processing system; receive, from the email provider, information specifying a first set of characteristics of valid email messages of the email provider and a second set of characteristics that are never present in valid email messages of the email provider, wherein the second set of characteristics specify that a uniform resource locator (URL) in a body of an email message has a host name that differs from a host name of the email provider; based on the fraudulent email messages and the first and second sets of characteristics, create a first filter specific to the email provider, wherein the first filter is usable to determine whether a subsequently received email message identified as purporting to be from the email provider is from another email provider. - View Dependent Claims (13, 14, 15, 16)
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Specification