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
Oldest First  |  Newest First  |  Threaded View
Navigating Security in the Cloud
Diya Jolly, Chief Product Officer, Okta,  12/4/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Navigating the Deluge of Security Data
In this Tech Digest, Dark Reading shares the experiences of some top security practitioners as they navigate volumes of security data. We examine some examples of how enterprises can cull this data to find the clues they need.
Flash Poll
Rethinking Enterprise Data Defense
Rethinking Enterprise Data Defense
Frustrated with recurring intrusions and breaches, cybersecurity professionals are questioning some of the industrys conventional wisdom. Heres a look at what theyre thinking about.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-16772
PUBLISHED: 2019-12-07
The serialize-to-js NPM package before version 3.0.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.to...
CVE-2019-9464
PUBLISHED: 2019-12-06
In various functions of RecentLocationApps.java, DevicePolicyManagerService.java, and RecognitionService.java, there is an incorrect warning indicating an app accessed the user's location. This could dissolve the trust in the platform's permission system, with no additional execution privileges need...
CVE-2019-2220
PUBLISHED: 2019-12-06
In checkOperation of AppOpsService.java, there is a possible bypass of user interaction requirements due to mishandling application suspend. This could lead to local information disclosure no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVers...
CVE-2019-2221
PUBLISHED: 2019-12-06
In hasActivityInVisibleTask of WindowProcessController.java there?s a possible bypass of user interaction requirements due to incorrect handling of top activities in INITIALIZING state. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction ...
CVE-2019-2222
PUBLISHED: 2019-12-06
n ihevcd_parse_slice_data of ihevcd_parse_slice.c, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.0 Android...