Featured Research

from universities, journals, and other organizations

Filtering spam: New method to rid inboxes of unsolicited email

Date:
November 20, 2012
Source:
Concordia University
Summary:
Spammers have recently turned high-tech, using layers of images to fool automatic filters. Thanks to some sophisticated new cyber-sleuthing, researchers are working toward a cure.

Once upon a time, Spam came in a can and could be easily avoided. Nowadays, spam plagues email inboxes around the world, hawking miracle pills and enticing the gullible with tales of offshore bank accounts containing untold fortunes.

These once text-based email infiltrators have recently turned high-tech, using layers of images to fool automatic filters. Thanks to some sophisticated new cyber-sleuthing, researchers at Concordia University's Institute of Information Systems Engineering are working toward a cure.

PhD candidate Ola Amayri and thesis supervisor, Nizar Bouguila, have conducted a comprehensive study of several spam filters in the process of developing a new and efficient one. They have now proposed a new statistical framework for spam filtering that quickly and efficiently blocks unwanted messages.

"The majority of previous research has focused on the textual content of spam emails, ignoring visual content found in multimedia content, such as images. By considering patterns from text and images simultaneously, we've been able to propose a new method for filtering out spam," says Amayri, who recently published her findings online in a series of international conferences and peer-reviewed journals.

Amayri explains that new spam messages often employ sophisticated tricks, such as deliberately obscuring text, obfuscating words with symbols, and using batches of the same images with different backgrounds and colours that might contain random text from the web. However, until now, the majority of research in the domain of email spam filtering has focused on the automatic extraction and analysis of the textual content of spam emails and has ignored the rich nature of image-based content. When these tricks are used in combination, traditional spam filters are powerless to stop the messages, because they normally focus on either text or images but rarely both.

So how do we stop spam before it sullies our inboxes? "Our new method for spam filtering is able to adapt to the dynamic nature of spam emails and accurately handle spammers' tricks by carefully identifying informative patterns, which are automatically extracted from both text and images content of spam emails," says Amayri.

By conducting extensive experiments on traditional spam filtering methods that were general and limited to patterns found in texts or images, she has developed a much stronger way, based on techniques used in pattern recognition and data mining, to filter out unwanted emails. Although the new method has been tested on English spam emails, Amayri says it can be easily extended to other languages.

While this new spam-detecting approach is still in the development stage, Amayri and Bouguila are currently working on a plug-in for SpamAssassin, the world's most widely used open-source spam filter. Amayri hopes that this plug-in will allow other researchers to perform further tests and make more progress in the field of spam detection.

"Spammers keep adapting their methods so that they can trick the spam filters, says Amayri. "Researchers in this field need to work together to keep adapting our methods too, so that we can keep spam out and focus on those messages that are really important."


Story Source:

The above story is based on materials provided by Concordia University. Note: Materials may be edited for content and length.


Cite This Page:

Concordia University. "Filtering spam: New method to rid inboxes of unsolicited email." ScienceDaily. ScienceDaily, 20 November 2012. <www.sciencedaily.com/releases/2012/11/121120122012.htm>.
Concordia University. (2012, November 20). Filtering spam: New method to rid inboxes of unsolicited email. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2012/11/121120122012.htm
Concordia University. "Filtering spam: New method to rid inboxes of unsolicited email." ScienceDaily. www.sciencedaily.com/releases/2012/11/121120122012.htm (accessed July 25, 2014).

Share This




More Computers & Math News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mobile App Gives Tour of Battle of Atlanta Sites

Mobile App Gives Tour of Battle of Atlanta Sites

AP (July 25, 2014) Emory University's Center for Digital Scholarship has launched a self-guided mobile tour app to coincide with the 150th anniversary of the Civil War's Battle of Atlanta. (July 25) Video provided by AP
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins