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. ...

Proliferation of unrestricted Internet access has brought the community unsolicited commercial email, better known as spam. Underestimated for quite some time, spam is now recognized as a problem costing the community billions of dollars per annum. One of the direct impacts of the spam flood is the widespread deployment of anti-spam measures, such as email filters and block lists. In this paper...

The effectiveness of anti-spam techniques is an important question: after all, spam has a real cost to legitimate users in terms of time and resources. The problem is how we determine effectiveness, especially for anti-spam techniques that are distributed, and require global scale to function. A scientific approach would suggest that we conduct controlled experiments to evaluate global-scale an...

This paper proposes a novel behavior-based anti-spam technology for email service based on an artificial immune-inspired clustering algorithm. The suggested method is capable of continuously delivering the most relevant spam emails from the collection of all spam emails that are reported by the members of the network. Mail servers could implement the anti-spam technology by using the “black lis...

Spam is a big problem for email users, and more serious for wireless mobile users with limited bandwidth. The battle between spamming and anti-spamming technologies has been going on for many years. Though many advanced antispamming technologies are progressing significantly, spam is still able to bombard many email users. The problem worsens when some anti-spamming methods unintentionally filt...

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 ...

Unsolicited commercial email or spam is recognized as a problem disrupting email communication and costing the community dearly. In order to protect recipients from receiving spam, anti-spam measures building on technologies, such as filters and block lists, have been deployed widely. There is some evidence that certain anti-spam measures based on the purported origin of the spam cause unintend...

Unsolicited email (spam) is still a problem for users of the email service. Even though current email anti-spam solutions filter most spam emails, some still are delivered to the inbox of users. A special class of spam emails advertises websites, e.g., online dating sites or online pharmacies. The success rate of this kind of advertising is rather low, however, as sending an email does only inv...

This paper describes three simple heuristics which improve opinion retrieval effectiveness by using blog-specific properties. Blog timestamps are used to increase the retrieval scores of blog posts published near the time of a significant event related to a query; an inexpensive approach to comment amount estimation is used to identify the level of opinion expressed in a post; and query-specifi...