Along with the wide application of e-mail nowadays, many spam e-mails flood into people’s email-boxes and cause catastrophes to their study and life. In anti-spam e-mails campaign, we depend on not only legal measure...Along with the wide application of e-mail nowadays, many spam e-mails flood into people’s email-boxes and cause catastrophes to their study and life. In anti-spam e-mails campaign, we depend on not only legal measures but also technological approaches. The Bayesian classifier provides a simple and effective approach to discriminate classification. This paper presents a new improved Bayesian-based anti-spam e-mail filter. We adopt a way of attribute selection based on word entropy, use vector weights which are represented by word frequency, and deduce its corresponding formula. It is proved that our filter improves total performances apparently in our experiment.展开更多
针对基本交换的安全性和时间开销的正反两个方面,论述了密题计算机制,利用不同的组网方式测量了基本交换的时间开销,通过计算样本均值和标准差分析了其性能的优劣,提出了HIP BE Anti-Spam模型体系结构。该结构根据HIP基本交换的特点及...针对基本交换的安全性和时间开销的正反两个方面,论述了密题计算机制,利用不同的组网方式测量了基本交换的时间开销,通过计算样本均值和标准差分析了其性能的优劣,提出了HIP BE Anti-Spam模型体系结构。该结构根据HIP基本交换的特点及其内建的密题机制,结合出站和入站的双重过滤来防范和阻止垃圾邮件;利用HIP基本交换机制增大垃圾邮件发送源头的代价和成本,防御对邮件服务的DoS攻击,明确了进一步优化HIP BE Anti-Spam模型及算化的研究方向。展开更多
Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective me...Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective methods suffer from the false positive and false negative classification. Objective methods based on the content filtering are time consuming and resource demanding. They are inaccurate and require continuous update to cope with newly invented spammer’s tricks. On the other side, the existing subjective proposals have some drawbacks like the attacks from malicious users that make them unreliable and the privacy. In this paper, we propose an efficient spam filtering system that is based on a smart cooperative subjective technique for content filtering in addition to the fastest and the most reliable non-content-based objective methods. The system combines several applications. The first is a web-based system that we have developed based on the proposed technique. A server application having extra features suitable for the enterprises and closed work groups is a second part of the system. Another part is a set of standard web services that allow any existing email server or email client to interact with the system. It allows the email servers to query the system for email filtering. They can also allow the users via the mail user agents to participate in the subjective spam filtering problem.展开更多
6月20日，CA公司发布了eTrust Anti—Spam及eTrust Identity and Access Management Toolkit（eTrust IAM Toolkit)]~款产品。eTrust Anti—Spam这款操作简单的反垃圾邮件及网络欺诈侦查产品同时还包括企业级杀毒软件、反间谍软件和防...6月20日，CA公司发布了eTrust Anti—Spam及eTrust Identity and Access Management Toolkit（eTrust IAM Toolkit)]~款产品。eTrust Anti—Spam这款操作简单的反垃圾邮件及网络欺诈侦查产品同时还包括企业级杀毒软件、反间谍软件和防火墙软件等。eTrust IAM Toolkit将帮助开发人员在其商业应用程序中打造强大、持续，并更具管理性的基于身份的安全技术。展开更多
E-commerce has advantages of low bargaining cost, full field service, and convenient. Its development forms and promotes the key factor of the global economic growth, and the security problem of e-commerce becomes mor...E-commerce has advantages of low bargaining cost, full field service, and convenient. Its development forms and promotes the key factor of the global economic growth, and the security problem of e-commerce becomes more and more important thereupon. It is the subject of a great meaning to structure the safe, convenient e-commerce running environment. The task of anti-spam is a concrete content among them. This paper discusses the source and danger of spam, and the precautionary and radical cure measures of spam are put forwarded, and the technologies of the anti-spam are discussed especially.展开更多
文摘Along with the wide application of e-mail nowadays, many spam e-mails flood into people’s email-boxes and cause catastrophes to their study and life. In anti-spam e-mails campaign, we depend on not only legal measures but also technological approaches. The Bayesian classifier provides a simple and effective approach to discriminate classification. This paper presents a new improved Bayesian-based anti-spam e-mail filter. We adopt a way of attribute selection based on word entropy, use vector weights which are represented by word frequency, and deduce its corresponding formula. It is proved that our filter improves total performances apparently in our experiment.
文摘针对基本交换的安全性和时间开销的正反两个方面,论述了密题计算机制,利用不同的组网方式测量了基本交换的时间开销,通过计算样本均值和标准差分析了其性能的优劣,提出了HIP BE Anti-Spam模型体系结构。该结构根据HIP基本交换的特点及其内建的密题机制,结合出站和入站的双重过滤来防范和阻止垃圾邮件;利用HIP基本交换机制增大垃圾邮件发送源头的代价和成本,防御对邮件服务的DoS攻击,明确了进一步优化HIP BE Anti-Spam模型及算化的研究方向。
文摘Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective methods suffer from the false positive and false negative classification. Objective methods based on the content filtering are time consuming and resource demanding. They are inaccurate and require continuous update to cope with newly invented spammer’s tricks. On the other side, the existing subjective proposals have some drawbacks like the attacks from malicious users that make them unreliable and the privacy. In this paper, we propose an efficient spam filtering system that is based on a smart cooperative subjective technique for content filtering in addition to the fastest and the most reliable non-content-based objective methods. The system combines several applications. The first is a web-based system that we have developed based on the proposed technique. A server application having extra features suitable for the enterprises and closed work groups is a second part of the system. Another part is a set of standard web services that allow any existing email server or email client to interact with the system. It allows the email servers to query the system for email filtering. They can also allow the users via the mail user agents to participate in the subjective spam filtering problem.
文摘6月20日，CA公司发布了eTrust Anti—Spam及eTrust Identity and Access Management Toolkit（eTrust IAM Toolkit)]~款产品。eTrust Anti—Spam这款操作简单的反垃圾邮件及网络欺诈侦查产品同时还包括企业级杀毒软件、反间谍软件和防火墙软件等。eTrust IAM Toolkit将帮助开发人员在其商业应用程序中打造强大、持续，并更具管理性的基于身份的安全技术。
文摘E-commerce has advantages of low bargaining cost, full field service, and convenient. Its development forms and promotes the key factor of the global economic growth, and the security problem of e-commerce becomes more and more important thereupon. It is the subject of a great meaning to structure the safe, convenient e-commerce running environment. The task of anti-spam is a concrete content among them. This paper discusses the source and danger of spam, and the precautionary and radical cure measures of spam are put forwarded, and the technologies of the anti-spam are discussed especially.
