System and Method Relating to Dynamically Constructed Addresses in Electronic Messages
First Claim
1. A method, when extracting a hyperlink from an electronic message, of not comparing a static domain in that link against a blacklist, if the hyperlink also has instructions to use a function to compute the link address.
3 Assignments
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Accused Products
Abstract
We show how a spammer can use a programming language inside an electronic message to make a dynamic hyperlink, instead of a standard static hyperlink. She can use this to obfuscate her domain, against antispam methods that extract those domains to compare against a blacklist. Plus, she can create sacrificial messages with “infinite” loops and intersperse these with her other messages, with obscured dynamic hyperlinks, but lacking infinite loops. We show how to handle both cases, to be able to extract valid hyperlinks from the latter messages and use these in the construction of, or a comparison against, a blacklist.
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Citations
10 Claims
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1. A method, when extracting a hyperlink from an electronic message, of not comparing a static domain in that link against a blacklist, if the hyperlink also has instructions to use a function to compute the link address.
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2. A method of attaching a heuristic or “
- Style”
called “
Dynamic Hyperlink”
to a message containing a dynamic hyperlink, and optionally using this Style to help classify the message, possibly as spam.
- Style”
- 3. A method of evaluating a dynamic hyperlink by using a master thread or process which starts a slave thread, which then tries to compute the link'"'"'s function, in order to find its address.
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8. A method of detecting when a message has steps to use a function to compute and display text, and optionally associates a Style called “
- Dynamic Text”
to the message. - View Dependent Claims (9, 10)
- Dynamic Text”
Specification