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In this paper, we propose statistical rules for Thai spam detection. Our approach is to generate Thai rules for SpamAssassin which is a popular spam detection system. We combine the advantage of rule-based and statistical-based methods. Rules can be shared, but it must be updated frequently to cope with spammers' tactics. Statistical filter can adapt to new types of spam with few human intervention...
Chiamwongpaet and Piromsopa introduced secure canary word, an extension of secure bit, as an architectural approach to the protection against buffer-overflow attacks on non-control data (variables and arguments). Secure canary word is based on two existing schemes, secure bit and canary word. The objective of this paper is to propose a new hardware implementation in order to improve the efficiency...
Piromsopa and Enbody (2006) proposed Secure Bit, an architectural approach to protect against buffer-overflow attacks on control data (return-addresses and function pointers). This paper explores the possibility of extending Secure Bit to protect non-control data (variables, pointers and arrays). A hardware bit, provided by Secure Bit, helps preserving the integrity of an associated address. We propose...
We propose a framework for protecting against buffer overflow attacks $the oldest and most pervasive attack technique. The malicious nature of buffer-overflow attacks is the use of external data (input) as addresses (or control data). With this observation, we establish a sufficient condition for preventing buffer-overflow attacks and prove that it creates a secure system with respect to buffer-overflow...
Recent advances in buffer-overflow protection are able to eliminate several common types of buffer-overflow attacks (e.g. stack smashing, jump table). In this paper, we introduce arbitrary copy, a type of buffer-overflow attack that is capable of bypassing most buffer-overflow solutions. By overflowing both source and destination pointers of any string copy (or similar) function, arbitrary copy is...
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