This weekend, an unnamed worm forced Microsoft to temporarily suspend active links  in Live Messenger 2009, in order to prevent the aggressive worm from spreading further. This is quite a surprising measure, because worms spreading through Instant Messaging (IM) such as Skype, Yahoo! Messenger and Microsoft Live Messenger are not new at all! For example,

These new families represent a major transition: Win32/Stuxnet demonstrates a number of novel and interesting features apart from the original 0-day LNK vulnerability, such as its association with the targeting of Siemens control software on SCADA sites and the use of stolen digital certificates, However, the new malware we’re seeing is far less sophisticated, and suggests bottom feeders seizing on techniques developed by others. Peter Kosinar comments:

On July 17th, ESET identified a new malicious file related to the Win32/Stuxnet worm. This new driver is a significant discovery because the file was signed with a certificate from a company called "JMicron Technology Corp".  This is different from the previous drivers which were signed with the certificate from Realtek Semiconductor Corp.  It is

Win32/Swizzor is a very prevalent—and old—malware family having been around since at least 2002.  Over the years, ESET has collected millions of samples related to this family and we still receive hundreds of new ones every day.  Over the last two years, Win32/Swizzor has frequently shown up in our top ten lists of the most

 Last Friday, Tavis Ormandy published details about a vulnerability in the Java Deployment Toolkit. The vulnerability allows an attacker to download and execute arbitrary Java code on a vulnerable system. We released generic detection for attacks against this vulnerability, the exploitation code being detected as "JS/Exploit.JavaDepKit.A trojan". Since yesterday, we are starting to see this vulnerability

Last Thursday, Microsoft released an out-of-band update to fix the latest vulnerability in Internet Explorer.  Since then, malware operators have been exploiting this vulnerability to install malware on thousands of PCs.  So far, we have detected more than 650 different versions of the exploit code which is detected as Trojan.JS/Exploit.CVE-2010-0249 by ESET antivirus.  We have

Search engines are free, powerful and efficient tools. But the same tools can be used to exploit the unsuspecting visitor who trusts the search results. Malicious SEO (Search Engine Optimization) is one such tactic where criminals spread malware through infected websites and poisoned search results. (This is sometimes referred to as index hijacking or SEO

 To get a better understanding of infection trends over the last few months, the ESET research team has analyzed data compiled by our online scanner. This tool is available freely from ESET’s website at http://www.esetonlinescan.com and can be accessed by anyone to scan their system without having to install our product. Data from our online

The Waledac botnet has been activated and it is now sending spam promoting videos of Independence Day, even if we are only July 3rd. They are using multiple web pages with titles like “Fourth of July Fireworks Shows”. Users wishing to view the video are asked to click an image that returns an executable and

Researchers at ESET have reliable intelligence that the Waledac botnet is currently being prepared for a spam campaign around the Independence Day theme. They have registered at least 18 domain names all related to the theme of video, fireworks, and Independence Day. The criminals behind Waledac are preparing to start sending spam with links to