Spam is a universal problem with which everyone is familiar. Figures published in 2005 state that about 75% of all email sent today is spam. In spite of significant new legal and technical approaches to combat it, spam remains a big problem that is costing companies meaningful amounts of money in lost productivity, clogged email systems, bandwidth and technical support. A number of approaches a...

Spam email, is the practice of frequently sending unwanted email messages, usually with commercial content, in large quantities to a set of indiscriminate email accounts. However, since spammers continuously improve their techniques in order to compromise the spam filters, building a spam filter that can be incrementally learned and adapted became an active research field. Researches employed m...

We examine a related, but distinct, problem to spam detection. Instead of trying to decide if email is spam or ham, we try to determine if email purporting to be from a known correspondent actually comes from that person – this may be seen as a way to address a class of targeted email attacks. We propose two methods, geolocation and stylometry analysis. The efficacy of geolocation was evaluated...

In order to protect email users from receiving unsolicited commercial email or spam, anti-spam measures building on technologies, such as filters and block lists, have been deployed widely. However, there is some evidence that certain antispam measures based on the purported origin of the spam cause unintended consequences related to issues of equity of access, which we term digital redlining. ...

The fight to curb the ever-increasing amount of unsolicited commercial email or “spam” showing up in the inboxes of American businesses has generated both state and federal legislation. The CAN-SPAM Act of 2003 was enacted to create a bright-line between spam and legal commercial email. The Act preempted many state spam laws but also left significant enforcement abilities to the individual stat...

The prevalence of spam URLs in Internet services, such as email, social networks, blogs and online forums has become a serious problem. These spam URLs host spam advertisements, phishing attempts, and malwares, which are harmful for normal users. Existing URL blacklist approaches offer limited protection. Although recent machine learning based URL classification approaches demonstrate good accu...

Email has emerged as a dominant form of electronic communication between people. Spam is a major problem for email users, with estimates of up to 56% of email falling into that category. Control of Spam is being attempted with technical and legislative methods. In this paper we look at email and spam from a supply-demand perspective. We propose Gridemail, an email system based on an economy of ...

Electronic mail services have become an important source of communication for millions of people all over the world. Due to this tremendous growth, there has been a significant increase in spam traffic. Spam messes up user’s inbox, consumes network resources and spread worms and viruses. In this paper we study the characteristics of spam and the technology used by spammers. In order to counter ...