Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Endpoint

4/11/2013
07:16 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

The Truth About Spam

New study shows one in three spam emails contains malware-ridden attachments, and one-fourth of all bots are in enterprise networks

Another reason not to dismiss spam as mostly an annoyance: New data shows that every third spam email with an attachment is rigged with malware.

In addition, independent testing organization AV-Test found that out of 550,000 emails flagged as spam, 14,000 were infected with malware. AV-Test combed spam samples between August 2011 and February 2013, and found that close to 14,000 of them were infected, about 2.5 percent of all of the emails they studied.

Some 30,000 of the 550,000 messages came with an attachment -- 10,000 of which were malware-laden. Nearly all of the spam messages with ZIP file attachments contained malware. Around 400,000 spam messages included URLs. Close to 1 percent of those links were malicious malware-serving URLs, while the others were traditional spam offers, such as for counterfeit pharmaceuticals. Some 25 percent of spam comes out of the enterprise, according to AV-Test.

A good chunk of spam comes from enterprise environments: "...the amount of spam sent remained extremely consistent from Monday to Friday before reducing to 25 percent at the weekend, namely on Saturday and Sunday," the report says. "The study therefore proves that 25 percent of all spambots are located in offices, where they are switched off at the weekend. The amount of spam sent then increases" on Mondays, according to AV-Test.

Just how much spam do most inboxes see daily? The maximum number was 80,000, and the U.S. by far is the biggest originator of spam with attachments. Interestingly, of 8,500 of those emails, only somewhere around 1,200 were malicious. Spam with attachments coming from India and Vietnam was almost all malware-laden.

The AV-Test report is available here (PDF) for download. Have a comment on this story? Please click "Add Your Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
7 Tips for Infosec Pros Considering A Lateral Career Move
Kelly Sheridan, Staff Editor, Dark Reading,  1/21/2020
For Mismanaged SOCs, The Price Is Not Right
Kelly Sheridan, Staff Editor, Dark Reading,  1/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
IT 2020: A Look Ahead
Are you ready for the critical changes that will occur in 2020? We've compiled editor insights from the best of our network (Dark Reading, Data Center Knowledge, InformationWeek, ITPro Today and Network Computing) to deliver to you a look at the trends, technologies, and threats that are emerging in the coming year. Download it today!
Flash Poll
How Enterprises are Attacking the Cybersecurity Problem
How Enterprises are Attacking the Cybersecurity Problem
Organizations have invested in a sweeping array of security technologies to address challenges associated with the growing number of cybersecurity attacks. However, the complexity involved in managing these technologies is emerging as a major problem. Read this report to find out what your peers biggest security challenges are and the technologies they are using to address them.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-7989
PUBLISHED: 2020-01-26
Adive Framework 2.0.8 has admin/user/add userUsername XSS.
CVE-2020-7990
PUBLISHED: 2020-01-26
Adive Framework 2.0.8 has admin/user/add userName XSS.
CVE-2020-7991
PUBLISHED: 2020-01-26
Adive Framework 2.0.8 has admin/config CSRF to change the Administrator password.
CVE-2020-7984
PUBLISHED: 2020-01-26
SolarWinds N-central before 12.1 SP1 HF5 and 12.2 before SP1 HF2 allows remote attackers to retrieve cleartext domain admin credentials from the Agent & Probe settings, and obtain other sensitive information. The attacker can use a customer ID to self register and read any aspects of the agent/a...
CVE-2019-16029
PUBLISHED: 2020-01-26
A vulnerability in the application programming interface (API) of Cisco Smart Software Manager On-Prem could allow an unauthenticated, remote attacker to change user account information which can prevent users from logging in, resulting in a denial of service (DoS) condition of the web interface. Th...