Georgia Tech Research Corporation

Verisign, Inc.

Nicholas G Feamster

Ramakant Pandrangi

Anirudh Ramachandran

Muhammad Mukarram Bin Tariq

Shuang Hao

Yogesh H Mundada

Disclosed are embodiments of a security system for reducing data leaks by checking information flows between resources of a network. When an information flow is attempted between a sending resource, which can be anywhere in the network, and a receiving resource residing at a specific host within the network, a host labeler can determine whether information is allowed to flow from the sending resource to the receiving resource. The sending resource and the receiving resource can each have an applicable label, and each label can comprise zero, one, or more taints. For each taint having an active secrecy characteristic in a label of the sending resource, the host labeler can require that there be a matching taint with active secrecy characteristic in the receiving resource. If this condition is not met, the security system can block the information flow between the sending and receiving resources.

Security systems and methods to reduce data leaks in enterprise networks

Systems and methods are disclosed for identifying domains as malicious based on Internet-wide DNS lookup patterns. Disclosed embodiments look for variance in the servers that look up a domain and also look at the popularity growth (quantity of queries from unique addresses) of a domain after registration to identify malicious domains. Other disclosed embodiments measure the similarity of servers that query a domain and cluster domains based on the similarity of those servers. Disclosed embodiments may use such temporal and spatial lookup patterns as input to a blacklist process to more effectively and quickly blacklist domains based on their Internet-wide lookup patterns.

Systems and methods for identifying malicious domains using internet-wide DNS lookup patterns

Growing community of inventors

Atlanta, GA, United States of America

Nicholas G Feamster