Symantec Corporation

Alex Vinnik

Maxim Gubin

Oleg Kislyuk

A computer-implemented method for detecting suspicious web pages. The method may include 1) identifying a plurality of malicious web pages; 2) establishing a classification model for identifying suspicious web pages, the classification model being based at least in part on the plurality of malicious web pages; 3) identifying an additional web page; 4) classifying the additional web page as suspicious using the classification model; 5) analyzing the additional web page to determine whether the additional web page is malicious; 6) determining that the additional web page is malicious based on the analysis; and 7) updating the classification model based at least in part on the determination. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for detecting suspicious web pages

For each page of a set, a Bayesian classification of the URL associated with the page is performed, and a maliciousness probability is assigned to the URL based on the Bayesian classification. A traversal priority is assigned to each page of the set, the assigned traversal priorities initially directing a breadth first traversal of the set of pages. The assigned traversal priorities of a subset of the pages of the set are modified to direct higher priority traversals, responsive to the maliciousness probabilities of the URLs corresponding to the pages of the subset. Each page of the set is traversed in the order specified by the traversal priorities, and analyzed during traversal to determine whether the page is malicious.

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Alex Vinnik