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Security on All Workstations Compromised in Minutes
1. In Focus: Yet Another Linux vs. Windows Report
2. Security News and Features
- Recent Security Vulnerabilities
- Help Writing an Incident Response Plan
- CyberGuard Acquires Zix Security Assets
3. Security Toolkit
- Security Matters Blog
- Security Forum Featured Thread
4. New and Improved
- Fine-Tuning Permissions
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==== 1. In Focus: Yet Another Linux vs. Windows Report ====
by Mark Joseph Edwards, News Editor, mark at ntsecurity / net
How many reports and related news stories have you read that allege they will reveal that Linux is more secure than Windows or vice versa? Get set for yet another one.
A recent news story, "Controversial Report Finds Windows More Secure than Linux," discusses a soon-to-be released report by a research professor at Florida Institute of Technology's College of Engineering and a director of research at a security technology provider. The report will compare Windows Server 2003 and Red Hat Enterprise Linux ES 3.0. As you might expect, the report is causing a stir of debate even before its release.
There are problems with these kinds of comparison reports and their related news stories. One problem is that the media often generalize to the point that they propagate misinformation to the unknowing. For example, some people might not know that there are multiple versions of Linux, just as there are multiple versions of Windows. Dozens of entities produce their own unique brands of Linux, updating these brands with new versions over time. A statement such as "Windows is more secure than Linux" is broad to the point of being meaningless.
Another problem with the comparative reports is that they lack adequate context. The researchers often seem somewhat blind to other factors that play a key role in the risk in using any OS or application.
According to the news story, the research report covers (among other information) statistics about the vulnerabilities that were found in each platform during 2004. Certainly that kind of information helps determine the overall security of an OS, but other data is necessary to put such reports in context. Among the data should be the answers to such questions as: How many security researchers were looking for security bugs and in what time frame? In which OS version were they looking? How much time did they spend on such efforts? What were their capabilities and what tools did they have at their disposal?
Obviously, if less collective time is spent looking for security problems in a platform, then the probability is high that fewer problems will be found in that platform. Likewise, if more time is spent looking for problems in a platform, then the probability of discovering more problems in that platform increases. Applications also play a key role in the security of a platform. So data could be gathered about application vulnerabilities and how they've affected overall security.
Equally as important, if not even more important, is the question of what motivates intruders and the makers of malware. How did these people spend their time? What OSs did they target most often and why?
Another set of interesting questions relate to how many of the cited vulnerabilities can be mitigated using configuration changes or defenses that are (or should) already be in place. For example, could a simple configuration change or a border or desktop firewall or Intrusion Prevention System (IPS) adequately defend against a particular vulnerability?
None of this type of data is offered in any comparative reports that I know of. Yet all these questions should come into play when researching for security comparison purposes because this data would provide a much more complete picture of how much risk is involved in using a particular piece of software, whether it be an OS, a related service, or an application. Without this kind of data to offer a larger context, these comparative reports are far less useful than their production and associated media coverage imply. If you know of a report that includes this sort of context, please let me know about it. I'd surely like to read it.
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==== 2. Security News and Features ====
Recent Security Vulnerabilities
If you subscribe to this newsletter, you also receive Security Alerts, which inform you about recently discovered security vulnerabilities. You can also find information about these discoveries at
Help Writing an Incident Response Plan
Do you have a plan in place for responding to security incidents? If not, a newly published outline can help you get started writing such a plan for your business.
CyberGuard Acquires Zix Security Assets
CyberGuard announced that it has acquired Zix's antispam, antivirus, and URL filtering assets for approximately $4 million in cash. CyberGuard will integrate Zix's technology into its Webwasher business and hopes to gain new customers through cross-selling to users of Zix products.
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The advent of Sarbanes-Oxley, Gramm-Leach-Bliley, and assorted market-specific regulations means that you may be legally required to have an email compliance and retention policy. In this free Web seminar, Exchange MVP Paul Robichaux will teach you to discover, manage, and archive information within your Exchange enterprise to successfully limit your legal exposure and protect your corporate information. Sign up today!
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==== 3. Security Toolkit ====
Security Matters Blog
by Mark Joseph Edwards, http://www.windowsitpro.com/securitymatters
Is Your Mail Server on a Blacklist?
Ever wonder if your mail server somehow wound up on a blacklist? I've found a tool that checks dozens of blacklist service databases for a server's IP address in one fell swoop.
by John Savill, http://www.windowsitpro.com/windowsnt20002003faq
Q: Under which user accounts do the various Group Policy scripts run?
Find the answer at
Security Forum Featured Thread
A forum participant is having trouble installing OpenSSH on Windows 2003 Server. He's reasonably sure that he's set all NTFS permissions correctly (allowing read and write on working folders and read and execute on program folders). But he can't connect to an OpenSSH Secure FTP (SFTP) server using known SFTP clients (such as FileZilla or PuTTY SFTP--PSFTP). He can clearly see in the Application log that OpenSSH recognizes the user and authenticates the session by confirming that the right password has been used, but the logon attempt fails anyway. Join the discussion at
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==== 4. New and Improved ====
by Renee Munshi, firstname.lastname@example.org
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