Phishing emails usually contain a message from a credible looking source requesting a user to click a link to a website where she/he is asked to enter a password or other confidential information. Most phishing emails aim at withdrawing money from financial institutions or getting access to private information. Phishing has increased enormously over the last years and is a serious threat to glo...

pam is a serious universal problem which causes problems for almost all computer users. This issue affects not only normal users of the internet, but also causes a big problem for companies and organizations since it costs a huge amount of money in lost productivity, wasting users’ time and network bandwidth. Many studies on spam indicate that spam cost organizations billions of dollars yearly....

Email communication is encumbered with a mass of email messages which their recipients have neither requested nor require. Even worse, the impacts of these messages are far from being simply an annoyance, as they also involve economic damage. This manuscript examines the resource " email addresses " , which is vital for any potential bulk mailer and spammer. Both a methodology and a honeypot co...

The number of computer security incidents is growing exponentially and society’s collective ability to respond to this crisis is constrained by the lack of trained professionals. The increased use of the Internet and computer technology to commit crimes indicates an abuse of new developments that requires a response by those involved in law enforcement. In this paper we see new research approac...

With the advent of the Internet and reduction of the costs in digital communication, spam has become a key problem in several types of media (i.e. email, social media and micro blog). Further, in recent years, email spamming in particular has been subjected to an exponentially growing threat which affects both individuals and business world. Hence, a large number of studies have been proposed i...

Electronic mail, or email, is a method for com-municating using the internet which inexpensive, effective, and fast. Spam type of email where unwanted messages, usually commercial are distributed in large quantities by spammer. The objective such behavior to harm users; these messages need be detected prevented from being sent users first place. In order filter emails, developers have used mach...

Identifying and detecting web spam is an ongoing battle between spam-researchers and spammers which has been going on since search engines allowed searching of web pages to the modern sharing of web links via social networks. A common challenge faced by spam-researchers is the fact that new techniques depend on requiring a corpus of legitimate and spam web pages. Although large corpora of legit...

A three-way decisions solution based on Bayesian decision theory for filtering spam emails is examined in this paper. Compared to existed filtering systems, the spam filtering is no longer viewed as a binary classification problem. Each incoming email is accepted as a legitimate or rejected as a spam or undecided as a further-exam email by considering the misclassification cost. The three-way d...

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...

One of the ways in which attackers steal sensitive information from corporations is by sending spearphishing emails. A typical spearphishing email appears to be sent by one of the victim’s coworkers or business partners, but has instead been crafted by the attacker. A particularly insidious type of spearphishing emails are the ones that do not only claim to be written by a certain person, but a...