The Experts below are selected from a list of 114 Experts worldwide ranked by ideXlab platform
Sy-yen Kuo - One of the best experts on this subject based on the ideXlab platform.
-
A multi-faceted approach towards Spam-resistible mail
2005Co-Authors: Yennun Huang, Ing-yi Chen, Sy-yen KuoAbstract:As checking Spam became part of our daily life, unsolicited bulk e-mails (UBE) have become unmanageable and intolerable. Bulk volume of Spam e-mails delivering to mail transfer agents (MTAs) is similar to the effect of denial of services (DDoS) attacks as it dramatically reduces the dependability and efficiency of networking systems and e-mail servers. Spam mails may also be used to carry viruses and worms which could significantly affect the availability of computer systems and networks. There have been many solutions proposed to filter Spam in the past. Unfortunately there is no silver bullet to deter Spammers and eliminate Spam mails. That is, in isolation, each of existing Spam Protection mechanisms has its own advantages and disadvantages. In this paper, we analyze the shortcomings of existing anti-Spam solutions and propose a multi-faceted approach using the Spam-resistible mail agent (SRMA), which provides the most advantages and the least disadvantages of existing anti-Spam solutions. Our experiments show that the proposed SRMA is immune to existing Spambots and the prototype proves to be effective, feasible and deployable
-
PRDC - A multi-faceted approach towards Spam-resistible mail
11th Pacific Rim International Symposium on Dependable Computing (PRDC'05), 1Co-Authors: Yennun Huang, Ing-yi Chen, Sy-yen KuoAbstract:As checking Spam became part of our daily life, unsolicited bulk e-mails (UBE) have become unmanageable and intolerable. Bulk volume of Spam e-mails delivering to mail transfer agents (MTAs) is similar to the effect of denial of services (DDoS) attacks as it dramatically reduces the dependability and efficiency of networking systems and e-mail servers. Spam mails may also be used to carry viruses and worms which could significantly affect the availability of computer systems and networks. There have been many solutions proposed to filter Spam in the past. Unfortunately there is no silver bullet to deter Spammers and eliminate Spam mails. That is, in isolation, each of existing Spam Protection mechanisms has its own advantages and disadvantages. In this paper, we analyze the shortcomings of existing anti-Spam solutions and propose a multi-faceted approach using the Spam-resistible mail agent (SRMA), which provides the most advantages and the least disadvantages of existing anti-Spam solutions. Our experiments show that the proposed SRMA is immune to existing Spambots and the prototype proves to be effective, feasible and deployable.
Dmitri Botvich - One of the best experts on this subject based on the ideXlab platform.
-
a trust overlay architecture and protocol for enhanced Protection against Spam
Availability Reliability and Security, 2007Co-Authors: Jimmy Mcgibney, Dmitri BotvichAbstract:The effectiveness of current anti-Spam systems is limited by the ability of Spammers to adapt to new filtering techniques and the lack of incentive for mail domains to filter outgoing Spam. This paper describes a new approach to Spam Protection based on distributed trust management. This is motivated by the fact that the SMTP mail infrastructure is managed in a distributed way by a community of mail domain administrators. A trust overlay architecture and a new protocol is presented. The TOP AS protocol specifies how experiences and recommendations are communicated between a Spam filter at each mail domain and its associated trust manager, and between trust managers of different mail servers. A technique for improving mail filtering using these trust measures is also described. Initial simulations indicate the potential of this approach to improve rates of false positives and false negatives in anti-Spam systems
-
ARES - A Trust Overlay Architecture and Protocol for Enhanced Protection against Spam
The Second International Conference on Availability Reliability and Security (ARES'07), 2007Co-Authors: Jimmy Mcgibney, Dmitri BotvichAbstract:The effectiveness of current anti-Spam systems is limited by the ability of Spammers to adapt to new filtering techniques and the lack of incentive for mail domains to filter outgoing Spam. This paper describes a new approach to Spam Protection based on distributed trust management. This is motivated by the fact that the SMTP mail infrastructure is managed in a distributed way by a community of mail domain administrators. A trust overlay architecture and a new protocol is presented. The TOP AS protocol specifies how experiences and recommendations are communicated between a Spam filter at each mail domain and its associated trust manager, and between trust managers of different mail servers. A technique for improving mail filtering using these trust measures is also described. Initial simulations indicate the potential of this approach to improve rates of false positives and false negatives in anti-Spam systems
Yennun Huang - One of the best experts on this subject based on the ideXlab platform.
-
A multi-faceted approach towards Spam-resistible mail
2005Co-Authors: Yennun Huang, Ing-yi Chen, Sy-yen KuoAbstract:As checking Spam became part of our daily life, unsolicited bulk e-mails (UBE) have become unmanageable and intolerable. Bulk volume of Spam e-mails delivering to mail transfer agents (MTAs) is similar to the effect of denial of services (DDoS) attacks as it dramatically reduces the dependability and efficiency of networking systems and e-mail servers. Spam mails may also be used to carry viruses and worms which could significantly affect the availability of computer systems and networks. There have been many solutions proposed to filter Spam in the past. Unfortunately there is no silver bullet to deter Spammers and eliminate Spam mails. That is, in isolation, each of existing Spam Protection mechanisms has its own advantages and disadvantages. In this paper, we analyze the shortcomings of existing anti-Spam solutions and propose a multi-faceted approach using the Spam-resistible mail agent (SRMA), which provides the most advantages and the least disadvantages of existing anti-Spam solutions. Our experiments show that the proposed SRMA is immune to existing Spambots and the prototype proves to be effective, feasible and deployable
-
PRDC - A multi-faceted approach towards Spam-resistible mail
11th Pacific Rim International Symposium on Dependable Computing (PRDC'05), 1Co-Authors: Yennun Huang, Ing-yi Chen, Sy-yen KuoAbstract:As checking Spam became part of our daily life, unsolicited bulk e-mails (UBE) have become unmanageable and intolerable. Bulk volume of Spam e-mails delivering to mail transfer agents (MTAs) is similar to the effect of denial of services (DDoS) attacks as it dramatically reduces the dependability and efficiency of networking systems and e-mail servers. Spam mails may also be used to carry viruses and worms which could significantly affect the availability of computer systems and networks. There have been many solutions proposed to filter Spam in the past. Unfortunately there is no silver bullet to deter Spammers and eliminate Spam mails. That is, in isolation, each of existing Spam Protection mechanisms has its own advantages and disadvantages. In this paper, we analyze the shortcomings of existing anti-Spam solutions and propose a multi-faceted approach using the Spam-resistible mail agent (SRMA), which provides the most advantages and the least disadvantages of existing anti-Spam solutions. Our experiments show that the proposed SRMA is immune to existing Spambots and the prototype proves to be effective, feasible and deployable.
Sufian Hameed - One of the best experts on this subject based on the ideXlab platform.
-
Fighting Spam using social GateKeepers
Networking Science, 2013Co-Authors: Sufian Hameed, Nishanth Sastry, Pan HuiAbstract:We introduce LENS ( LEveraging social Networking and trust to prevent Spam transmission ), a novel Spam Protection system which leverages the recipient’s social network to allow correspondence within the social network to directly pass to the mailbox of the recipient. To enable new senders to send emails, legitimate and authentic users, called GateKeepers ( GKs ), are selected from outside the recipient’s social circle and within predefined social distances. Our evaluations show that LENS provides each recipient reliable email delivery from a large fraction (up to 55% of entire userbase) of the social network; it is also effective and lightweight in accepting all the legitimate inbound emails in the real email traces. LENS imposes zero overhead for the common case of frequent and familiar senders, and remains lightweight for the general case. Our prototype implementation of LENS in Postfix/MailAvenger shows that LENS consumes up to 75% less CPU and 9% less memory as traditional solutions like SpamAssassin.
-
ICDIM - Identity based email sender authentication for Spam mitigation
Eighth International Conference on Digital Information Management (ICDIM 2013), 2013Co-Authors: Sufian Hameed, Tobias KlohtAbstract:The elimination of unsolicited bulk emails, also known as Spam, is still a largely unsolved problem. Making up for the vast majority of emails transmitted, Spam is an annoyance and potential security issue for users, and moreover a superfluous burden to the internet. Despite the maturity of today's email infrastructure, it is difficult to ensure the authenticity of a sender address for inbound mails. This shortcoming is used by Spammers to bypass existing Spam Protection systems and furthermore poses a security risk to users. Due to this a vast majority of Spam emails today are sent from botnets with forged sender addresses. This has attracted researchers over the years to develop email sender authentication mechanism as a promising way to verify identity of the senders. In this paper we introduce iSATS, a new email sender authentication system based on Identity-based public key cryptography. iSATS leverages identity based signature scheme to provide a reliable and easy way to bind the identity of legitimate sender unambiguously to his emails. Unlike the popular existing solutions like SPF and DKIM, it is hard for the Spammer to adopt iSATS. Evaluation of the prototype implementation show promising performance with low processing overhead on different computational setups.
-
Leveraging Email based Social Networks to Prevent Spam: Framework, System Design and Evaluation
2012Co-Authors: Sufian HameedAbstract:Spam is still an open problem from the network operator's perspective. The common state-of-the-art strategy is to place filters against Spam at the recipient's edge. Although this strategy largely solves the Spam problem from the user's perspective but the false positives/negatives may still exist. This strategy is also unable to prevent Spam from traversing the Internet. Consequently, we now have around 260 billion Spam messages sent across the Internet each day. Spam is therefore consuming large amounts of Internet bandwidth and is imposing non-negligible financial loss to network operators. Therefore it becomes imperative to mitigate Spam much earlier than is typically done today. The main part of this thesis proposes LENS, a novel, easily adaptable and scalable Spam Protection system that is incrementally deployable with low processing overheads. LENS leverages the recipient's social network to allow correspondence within the social network to directly pass to the mailbox of the recipient. LENS further mitigates Spam beyond social circles and stops Spam messages early on, instead of filtering these messages from user mailboxes or at the recipient's edge. The key idea in LENS is to select legitimate and authentic users, called Gatekeepers (GKs), from outside the recipient's social circle and within predefined social distances. LENS utilizes the GK to generate a voucher, and new senders are required to obtain these vouchers (to communicate with the recipient) from a GK in their social neighborhood. Recipients recover from compromised GKs simply by selecting replacements and revoking vouchers. Unless a GK vouches for the emails of potential senders from outside the social circle of a particular recipient, those e-mails are prevented from transmission. In this way LENS drastically reduces the consumption of Internet bandwidth by Spam. The contributions of this thesis are the development of social network based Spam mitigation framework (LENS), a system design based on this framework, the evaluation of the system by means of simulation and a prototype implementation. The evaluations show that with the help of hundreds of GKs, LENS can provide reliable email delivery from millions of potential users. LENS imposes Zero overhead for the common case of frequent and familiar senders, and remains lightweight for the general case. Using real email traces, the simulations show that LENS is effective in accepting all legitimate inbound emails. Our prototype implementation of LENS in Postfix/MailAvenger shows that LENS consumes up to 75% less CPU, 9% less memory and it is around 2-3 orders of magnitude faster in processing emails than traditional solutions like SpamAssassin.
-
ICNP - LENS: Leveraging social networking and trust to prevent Spam transmission
2011 19th IEEE International Conference on Network Protocols, 2011Co-Authors: Sufian Hameed, Pan Hui, Nishanth SastryAbstract:In this paper we introduce LENS, a novel Spam Protection system based on the recipient's social network, which allows correspondence within the social circle to directly pass to the mailbox and further mitigates Spam beyond social circles. The key idea in LENS is to select legitimate and authentic users, called Gatekeepers (GKs), from outside the recipients social circle and within pre-defined social distances. Unless a GK vouches for the emails of potential senders from outside the social circle of a particular recipient, those e-mails are prevented from transmission. In this way LENS drastically reduces the consumption of Internet bandwidth by Spam. Using extensive evaluations, we show that LENS provides each recipient reliable email delivery from a large fraction of the social network. We also evaluate the computational complexity of email processing with LENS deployed on two Mail Servers (MSs) and compared it with the most popular content-based filter i.e SpamAssassin. LENS proved to be fast in processing emails (around 2–3 orders of magnitude better than SpamAssassin) and scales efficiently with increasing community size and GKs.
Jimmy Mcgibney - One of the best experts on this subject based on the ideXlab platform.
-
a trust overlay architecture and protocol for enhanced Protection against Spam
Availability Reliability and Security, 2007Co-Authors: Jimmy Mcgibney, Dmitri BotvichAbstract:The effectiveness of current anti-Spam systems is limited by the ability of Spammers to adapt to new filtering techniques and the lack of incentive for mail domains to filter outgoing Spam. This paper describes a new approach to Spam Protection based on distributed trust management. This is motivated by the fact that the SMTP mail infrastructure is managed in a distributed way by a community of mail domain administrators. A trust overlay architecture and a new protocol is presented. The TOP AS protocol specifies how experiences and recommendations are communicated between a Spam filter at each mail domain and its associated trust manager, and between trust managers of different mail servers. A technique for improving mail filtering using these trust measures is also described. Initial simulations indicate the potential of this approach to improve rates of false positives and false negatives in anti-Spam systems
-
ARES - A Trust Overlay Architecture and Protocol for Enhanced Protection against Spam
The Second International Conference on Availability Reliability and Security (ARES'07), 2007Co-Authors: Jimmy Mcgibney, Dmitri BotvichAbstract:The effectiveness of current anti-Spam systems is limited by the ability of Spammers to adapt to new filtering techniques and the lack of incentive for mail domains to filter outgoing Spam. This paper describes a new approach to Spam Protection based on distributed trust management. This is motivated by the fact that the SMTP mail infrastructure is managed in a distributed way by a community of mail domain administrators. A trust overlay architecture and a new protocol is presented. The TOP AS protocol specifies how experiences and recommendations are communicated between a Spam filter at each mail domain and its associated trust manager, and between trust managers of different mail servers. A technique for improving mail filtering using these trust measures is also described. Initial simulations indicate the potential of this approach to improve rates of false positives and false negatives in anti-Spam systems
