Researchers at Symantec said late Tuesday they've spotted a Web site that tries to exploit computers lacking one of the recently issued patches for versions of Microsoft's Excel spreadsheet program.
The vulnerability involves a malicious Excel file that when opened can allow a hacker to execute other code on a PC.
In its advisory, Symantec said one Web server is hosting the malicious file, which it calls "Trojan.Mdropper.AA." The Trojan Horse spreadsheet document can download other harmful files to a computer.
Users could become infected if they open the malicious Excel file sent to them as an e-mail attachment. Also, they could be redirected to the Web site hosting the file by an iframe embedded in a page on a compromised Web site, the vendor said.
To protect computers, users are advised to apply MS08-014, the batch of patches Microsoft released earlier in the month that fixes several flaws in Excel 2000, 2002, 2003, and 2007 for Windows. Administrators should also block their users from accessing "intop.info," the site hosting the file.
On March 11, Microsoft released four critical updates that fixed 12 vulnerabilities for its Excel, Outlook, Office 2000, and Office's Web components.
This whitepaper explains the terminology and concepts behind Data Replication technologies and establishes some sizing rules through worked examples. Learn the new paradigm in disaster tolerance—protect data anywhere.
Download now »
Server virtualization is a popular option for dealing with mounting datacenter costs. Another equally promising approach is the use of an Application Delivery Controller. Citrix NetScaler provides a low-cost way for organizations to reduce their server count and accrue cost savings from a reduction in space, cooling, power and personnel.
Download now »
The emergence of WLANs has created a new breed of security threats to enterprise networks.
Included in HP ProCurve WLAN solutions is security technology that alleviates threats from WLANs through:
* Monitoring wireless activity inside and out of the enterprise
* Classifying WLAN transmissions into harmful and harmless
* Preventing transmissions that pose a security threat to the enterprise network
* Locating participating devices for physical remediation
Effectively address data protection challenges, implementing solutions that help store and protect business–critical data while cutting costs and improving efficiency and reliability.
Download now »
Sign up to receive Security Resource Alerts
This white paper provides guidance on how to develop a strategic approach to managing and monitoring logs, a key function required for compliance with many regulatory mandates and a critical defense against security threats.
Download now! »
Learn about the processes and technologies that support security information management (SIM) operations, as well as the business case for SIM. The series examines different options for implementing SIM and gives you evaluation criteria for selecting the best option for your organization.
Download now! »
Learn the strategies, actions, and capabilities that Best-in-Class organizations employ and technologies they choose to obtain superior performance against various security performance metrics. This report provides guidelines for identifying which security solutions to consume as a MSS and defines best practices for choosing and managing MSSPs.
Download now! »
Recommend This
