Archive for July, 2009
Remote BIND 9 DoS Vulnerability Patched
By Denys Ma at 30 July, 2009, 5:26 pm
A new, remotely exploitable denial-of-service (DoS) vulnerability affecting BIND Version 9 was reported by ISC on July 28. It’s also reported that exploits have been seen in the wild. Because BIND is widely used, these attacks can affect many critical infrastructures. Here’s a little description of the problem.
The vulnerability exists in the DNS dynamic-update request [...]
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Loading ...Computer Virus Prevention
By ComputerRepair.com | Computer Repair Help and Information at 29 July, 2009, 1:43 pm
We posted an article about how to check if your computer is protected from viruses. Having anti-virus software installed on your computer is a big part of virus protection, but there are some things you can do to keep things “clean”.
Here are some tips and advice to proactively prevent virus from infecting your computer:
- Do not open any files attached to an email from an unknown, suspicious or untrustworthy source, no matter how enticing it may seem.
- Switch on macro protection in Microsoft Office applications like Word and Excel. You can find your macro settings under the Tools tab in both applications. To change the settings:
- Open Microsoft Word or Excel
- Click on the Tools tab at the top
- Click on Options
- Click on the Security tab in the Options window
- Click on the Macros Security button
- Select a setting that is “Medium” or above for the best protection
- You don’t have to use the anti-virus program that came with your new computer but if you decide to stick with it, don’t forget to subscribe once the free trial period is over so that you stay up-to-date.
- Only use one anti-virus program at a time. Uninstall one anti-virus program before you install another.
- Providing you update virus signatures regularly, as a general rule, you don’t need to buy every single new release of the anti-virus software to stay protected.
- Free online scans are useful diagnostic tools but they are not a substitute for a proper anti-virus program that is installed on your PC. Prevention is better than cure.
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(No Ratings Yet) Loading ...TwitViewer.net – Or How Something That Sounds Too Good to Be True Usually Is
By marianmerritt at 29 July, 2009, 10:46 am
The message might have come in early yesterday on your Twitter feed, “Want to know whos stalking you on twitter!?: http://twitviewer.net/” You might have clicked the link to visit the website. It all happened so fast, the fabulous offer (heck yeah, I want to know who the last 200 people are to look at my Twitter profile!) and the large scale distribution of the “tweet”. Even seasoned journalists who should always wear their cynical and world-weary thinking caps fell for it.
(No Ratings Yet) Loading ...Q2 Threats Report Released–It’s All About Botnets and Spam
By David Marcus at 28 July, 2009, 9:52 pm
Today we released our Q2 Threats Report. Some old trends have continued. Some new trends and threats have been established, and some old “friends” have even outdone themselves. Spam volumes have increased 141 percent since March, continuing the longest ever streak of increasing spam volumes. We also highlight the dramatic expansion of botnets and the [...]
(No Ratings Yet) Loading ...Intrusion Prevention System (IPS): Your first line of defense against malware
By Ameya at 28 July, 2009, 2:10 pm
(No Ratings Yet) Loading ...Is My Computer Protected From Viruses?
By ComputerRepair.com | Computer Repair Help and Information at 28 July, 2009, 2:08 pm
Do you need to find out if your computer is protected against viruses? We can show where you can go for this information.
Nearly everyone has a virus protection program of some sort on their computer. To see if your Windows computer has it:
- Click Start
- Highlight Settings
- Select Control Panel
- In the window that opens, double-click the icon for “Security Center”
- If the “Virus Protection” section says “On”, then you have antivirus software running
- Click the downward pointing arrow-like symbol next to “ON” to learn which program it is. There may even be a link to the manufacturer’s web site.
If you have another Microsoft operating system that older than XP, follow these instructions:
-Click Start
- Highlight Search
- Search your hard drive for any of the more popular Anti-virus software company like Norton or McAfee
- Type either of these names into the search box and see if you have any files even trial versions of this software.
A good and safe place to go to check your computer to see if you have virus protection on your computer is here: http://onecare.live.com/site/en-us/default.htm. It is a secure and easy way to find out what you have or don’t have protecting your computer.
By following these steps, you can discover if your computer has antivirus software installed.
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(No Ratings Yet) Loading ...Long Pause During Windows Startup Process
By pooja at 27 July, 2009, 6:57 am
After you choose to start Windows from the Boot menu, you may experience a long delay (or pause) before your computer finishes starting. Note that this delay may range from 10 seconds to a minute. Also, this delay occurs before the Starting Windows progress bar appears, and your computer may appear to stop responding (hang) during this time.
Cause
This behavior can occur if Windows is installed on a drive or a partition to which Windows cannot gain access with normal Basic Input/Output System (BIOS) INT-13 or INT-13 extension calls. When Windows Setup determines it cannot use BIOS calls to start, it uses scsi() or signature() syntax in the Boot.ini file instead of multi() syntax.
When booting a system that requires scsi() or signature() syntax, Ntldr loads an additional device driver (Ntbootdd.sys) to initialize and interrogate the boot controllers in your computer. Ntldr then seeks the associated boot drive attached to the controller to finish loading the kernel. These additional operations take more time in Windows because of the Plug and Play nature of the operating system.
This behavior is expected, however, Windows Setup may use scsi() or signature() syntax, even if your computer can boot using the normal BIOS calls. This may occur on Integrated Drive Electronics-based computers when using a large capacity boot drive. In this case, you can try adding an additional entry in the Boot.ini file and use multi() syntax on the new entry to boot from. Note that if this works, your computer starts without pausing.
(No Ratings Yet) Loading ...Restore the Operating System to a Previous State in Windows XP
By pooja at 27 July, 2009, 6:51 am
If Windows XP Does Not Start
If Windows does not start, restart Windows by using the Last Known Good Configuration feature:
- Start the computer and then press the F8 key when Windows begins to start. The Windows Advanced Options menu appears.
- Use the ARROW keys to select Last Known Good Configuration (your most recent settings that worked), and then press ENTER.
If a boot menu appears, use the ARROW keys to select Microsoft Windows XP, and then press ENTER. Windows XP restores the computer to the most recent restore point.
If Windows XP Does Start
- Log on to Windows as Administrator.
- Click Start > All Programs > Accessories > System Tools > System Restore. System Restore starts.
- On the Welcome to System Restore page, click Restore my computer to an earlier time (if it is not already selected), and then click Next.
- On the Select a Restore Point page, click the most recent system checkpoint in the On this list, click a restore point list, and then click Next. A System Restore message may appear that lists configuration changes that System Restore will make.
- Click OK.
- On the Confirm Restore Point Selection page, click Next. System Restore restores the previous Windows XP configuration, and then restarts the computer.
- Log on to the computer as Administrator. The System Restore Restoration Complete page appears.
- Click OK.
Troubleshooting
You may inadvertently restore Windows XP to a previous configuration that you do not want.
To undo the restoration:
- Log on to Windows as Administrator.
- Click Start > All Programs > Accessories > System Tools > System Restore. System Restore starts.
- On the Welcome to System Restore page, click Undo my last restoration, and then click Next. A System Restore message may appear that lists configuration changes that System Restore will make.
- Click OK.
On the Confirm Restoration Undo page, click Next. System Restore restores the original Windows XP configuration, and then restarts the computer.
- Log on to the computer as Administrator. The System Restore Undo Complete page appears.
- Click OK.
(No Ratings Yet) Loading ...Cannot Use MSN EXPLORER or AOL To Send a Remote Assistance Invitation via Email
By pooja at 27 July, 2009, 6:48 am
When you use Remote Assistance to invite someone to help you and try to choose the option to use e-mail, you might see the following message when you get to the available options page:
Outlook Express is not set up.
Remote Assistance is either incompatible with the default e-mail program on this computer, or could not detect a default e-mail account.
You will also see an option to set up Outlook Express.
Cause
You have MSN Explorer or America Online (AOL) installed and configured as you default e-mail client. Remote Assistance on Windows XP will not allow to send the activation mail message through the MSN Explorer or AOL messaging system, as they use their own e-mail clients and they are not MAPI-compliant. Remote Assistance Invitation e-mail escalation will only work with MAPI-compliant e-mail programs and e-mail accounts.
Resolution
As a workaround, you could use one of the following options based on how you access your e-mail.
MSN Explorer
Use Windows Messenger to invite someone to Start Remote Assistance. In order to do that, follow the instructions on the Help and Support Center, Remote Assistance page, under the Use Windows Messenger field.
(No Ratings Yet) Loading ...Do you wish to let Assistant share control of your computer?
By pooja at 27 July, 2009, 6:47 am
- The remote assistant can now control your computer remotely. This includes the ability to shut down the computer.
Note: Do not use the mouse while the remote assistant controls the computer.
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