Recently in Security Notice Category

February 12, 2008

Linux Kernel Vulnerability

A vulnerability in recent versions of the linux kernel was discovered on the weekend: Mandriva linux versions 2007.0, 2007.1 and 2008.0 were affected. We began applying temporary fixed on Sunday and so far have detected no compromises. We are now applying updated, fixed kernels to all affected systems.

I will be installing the latest Mandriva release on some systems where there is any suspicions of compromise. The series of updates of earlier releases (< 2006.0) which I began last month will continue.

March 15, 2007

Mac Credit Union Phishing Scam

The best phishing scam I've ever seen is making the rounds at Mac. It appears to come from the McMaster Savings and Credit Union and insists - in a plausible way in almost flawless English - that:

You must enroll in "Challenge Questions" Authentication

Do I need to say that you must not and should not do any such thing?

Continue reading Mac Credit Union Phishing Scam.

December 18, 2006

Sophos Vulnerability - Get Update

UTS advises that some older versions of Sophos antivirus have been found to have a vulnerability:
http://www.frsirt.com/english/advisories/2006/4919

Check to see which version you have and download any necessary updates from UTS.

December 12, 2006

Microsoft Word Vulnerability

Microsoft has warned of two vulnerabilities affecting Microsoft Word in the past week. The first (announced December 5th) vulnerability affects both Windows and Mac OS X versions; the second (announced December 10th) affects only Windows versions. The Register has a nice summary.

Continue reading Microsoft Word Vulnerability.

April 27, 2006

Virus Making the Rounds

Several department members have reported receiving messages from the "math.mcmaster.ca user support team" or "math.mcmaster.ca mail admin team" which ask the recipient to open an attached file. These messages contain Windows viruses.
Continue reading Virus Making the Rounds.

March 1, 2006

Patch for Safari Vulnerability

The Safari vulnerability mentioned last week is addressed in the latest OS X 10.4 patch. I recommend running software update ASAP; a reboot is required.

Continue reading Patch for Safari Vulnerability.

February 21, 2006

Serious Safari Vulnerability

Safari, the default browser in OS X, has been discovered to have an easily exploitable vulnerability which could result in arbitrary code being executed on a Mac.

The vulerability, which involves automatic execution of code in ZIP files, is described at Secunia.com; the same Web site also has a safe demonstration.

Continue reading Serious Safari Vulnerability.

October 14, 2005

Recent Attacks and Passwords

We've seen tens of thousands of break-in attempts on servers in a number of departments. One of those attempts resulted in a research group's server (not in Math & Stats) being compromised and removed from the network by UTS when they discovered it to be the source of nasty behaviour.

The compromised system was not attacked via a security hole or subtle social engineering: the compromised account had a password simple enough for the cracking program to guess it.

Please make sure that your mathserv password is good. Good means:

  1. more than one word
  2. at least one of those words is not in the dictionary
  3. you have one or more numbers or symbols in your password
  4. your password has nothing to do with your name

Continue reading Recent Attacks and Passwords.

September 30, 2005

Worm Free but not Worry Free

UTS scanned the network for Windows PCs vulnerable to Windows MS05-039 Plug & Play exploits, and once again there are dozens of potential victims and none of them are in Math and Stats. That said, chances are your Windows laptop was not checked so it might still be vulnerable. Run Windows Update to make sure that you aren't open to nasty worms of the zotob ilk.

September 20, 2005

Yay Us - We're Worm Free

UTS reports that McMaster got hit by a worm earlier this week. Math & Stats is clean, I'm pleased to report.
Continue reading Yay Us - We're Worm Free.

April 25, 2005

Virus/Trojan Making the Rounds

Variants of the MyDoom trojan are making the rounds again, this time with improved grammar and spelling. If you get a message alleging to be from the "mcmaster.ca" or "math.mcmaster.ca" Support Team saying that you have a virus and should open an attachment, please don't open it; the message is from neither UTS nor me and the attachment is a trojan of the sort described here.
Continue reading Virus/Trojan Making the Rounds.

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