Tag: client

Disaster preparation 101 — Data backup

Paul

In this one I will talk about Disaster, it happens to all of us from time to time. A fire, a earthquake, a stolen laptop or any number of ways. So what happens to your data, is it stored on the laptop? Is it important very sensitive data? Could you get fired if you lost that data?

[ad#ad2-right]These are all questions you must ask yourself when you have laptop. How do you backup your data or even do you have a backup? Having seen this with my own clients, I must wonder if there are people out there who just don’t care. I had a client the other day who gotten a virus and this was a really mean virus. Deleted some very important files when you tried to clean the virus out. She called me in a panic because she couldn’t load up windows? I asked if she had any backups, she said “what’s a backup” . So I sat there discussing this with the client for over 20 minutes. Finally she started to understand, she said she had the OEM Backup DVD but nothing else. She also said she needed help with getting data off the computer. I told her that I would be able to come the next day and I was lucky the virus didn’t do anything else to her data. We were able to retrieve the data from her system. That is where I start my rant , Why would anyone not have backup of there most important data?

So How do you backup your data? This is controversial and somewhat depends on how much people want to spend to keep there data safe and not loose pictures or music. There are several ways to do it, each way has it’s pitfalls or short comings and requires a little more effort:

Kinds of Backup

Hard Medium – DVD, CD, External Hard drive

Although,  The hard medium is usually used that doesn’t mean you can have a backup other than hard.   Here are some ways to back up on the internet.

Internet Medium:

  • Jungle Disk — Provides online storage through the Amazon s3 service.   Only pay for what you use.   It works well with most Operating system.  I’ve used it on Vista so it is really nice.

  • Carbonite Online backup –Another good Online storage.

  • Some Other Online backup — Here a list from Amazon to better help you find the type of software that you might need.

These are just a few options, if you want to look for other you can.  The important thing to do is BACKUP because if you need some data that gets wiped or destroyed.  You will be kicking yourself for not backing up.

Signs of a Computer Infection!

Paul

So I was thinking this morning what I missed and I totally missed on how you might be able to tell if you have a computer virus. It does me no good to talk about a virus if you don’t know you’re infected. I was thinking of the times I had a client who had trouble but wasn’t what I thought.

So How do you know?

Some people would say it depends on factors but here are what I call clues that make me suspect a virus:[ad#ad2-right]

  1. Slow or Sluggish computers —  Here is what I know if the computer is really slowing down and have a dual core or quad core.  If you are running a system and sees a lot of hard drive activity even when the computer is idle then it might be a virus or it could be a program doing what it is supposed to be doing.  So this is somewhat of an indication but not always.

  2. Slow internet connection on the computer or on the network — Due to the fact that most people have a router that is connected to all the computers and if you internet connection on all your systems are slower than normal then you could have a virus.  I use Speed Test website to help determine this.

  3. Corrupt files or Missing files —  Sometimes you have a text documents or files that are missing and you have to pay to get them back.   It’s an old scheme and usually once your files have been encrypted you can’t get them unencrypted.  So this is why I added this one also because it varies from virus to virus.

  4. Programs don’t work like they used to —  This is also a very common association with a virus because virus makers don’t have time to test it out on a variety.   Most of the time if you get a call that a program is no longer working tat would be the first thing I’d look at, if not check to see what other programs have been installed lately.

  5. In some cases more files are the Hard drive —  This can be a indication of a virus because the virus might be using the system to host files or other such illegal activity.   Although this is happening less and less it can still be a possibility and should be checked out.   I like to use a graphical tree size program to determine if that is the truth.

  6. Pop ups or Browser redirects — this is a common thing along the way.  It’s always the same and saying something like “you have a virus” or “You unprotected and you might have a virus”.  The theme here is to scare the user into buying there product that does not do anything.   It sometimes even looks like a real anti-virus program or spyware program but in truth it is just a scam.  In some cases it will send you to a site because it keeps wanting you to buy the product.

  7. DNS Changes on you — Some hackers like to have you go through there server so they can watch everything you do online.  They are wanting to get the sensitive information of bank account, and other important accounts.  This is really the ones that need to get off your system asap.

[ad#ad2-left]These are the signs I’ve seen in the past that would indicate a virus but as with any problem.  You will need to check for all the possibilities.   It is always going to be an issue with people because most people don’t know about the signs, now you do and you can now be a better computer user.  It is you who can only fight viruses by knowing all the possible system and only you can defeat a virus.  In the next article I will talk about the tools to help you find and defeat a virus.   This will be a big blog post because I have so much to teach and explain.   If you like these post by all means leave a comment and help spread the word.

Uncovering a Virus/Trojan

Paul

Getting done with the first part really got my juices flowing. I was shopping looking and thinking about this next article. I came up to only one option turning this into a 3-5 length post due to all the content that I will have.  So where did we leave off?  Oh that is right figuring out if you have a virus/Trojan.  The instant I made a post about this 12 hours later someone make a comment and here is what he said:
[ad#ad2-right]

Rene Van Belzen

I can’t wait to read part two of this article. I always wondered how you’d know you’re infected if a virus don’t want to be detected and no virus definitions are yet available, because the virus is so new.

Now the truth is anytime a Virus does something it usually leaves a footprint somewhere and somehow.   Even the hardest working hacker can’t plan for all possibilities and that is where we begin.   I have been helping people for a while with viruses and know that no matter how hard the virus tries to hide you can usually find it relatively quickly and easily do to virus check here are the ways I’ve done to figure out if they may or may not have a virus/Trojan.

Now if this is a client’s computer and you don’t want to be rude to the client, there are a few indications of user error and installing a virus.   This is relatively simple, all you do is do a quick inventory of all the start menu programs.  You’d want to look for any P2P file sharing program, If they have Firefox Installed, and if they are using Window Mail and not Thunderbird.   You see 80% to 90% of virus downloaded are installed by the End USER.  They either downloading a game and installing a virus with [ad#ad2-left]a game, or not protecting themselves by using Internet Explorer or Using Windows Mail.  That is usually my first step due to the fact, I’ve got to be diplomatic about finding out about security ways.  Also make sure they are up to date on there Window updates, unless they are using a really old system then you will have to work even harder.  Also you can suspect a virus if the client is talking about having problem with a program recently although this isn’t always true it sometimes is the case due to the fact hackers don’t have a big chance to test these viruses/Trojans out before they set them into the wild.  So there are always going to be unplanned problems associated with them.

After the first initial search of desktop, you should really know the likely hood of a possible virus getting on the system and later we will talk about counter measures to prevent virus attacks in the future.   There are a few places a hacker likes to put commands.   Hackers love to put in the Registry to run a program every time Windows starts.  It usually in:

  • HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  • HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\

Usually 50% to 70% of virus like to make sure the program to runs.  This is a flaw in Windows because hackers can edit this without much effort but there isn’t many places a hacker can go to make sure a program is set to run when you boot.   So this is also a benifit to finding those little programs.

Now just like the Regisitry, Hackers also like to put programs in a few areas on the hard drive.   This is also kinda hard to hide because most of the time these are consider important to the system but if you know what to look for you can pretty much figure out if it is truelly a system file.  These areas of the hard drive are:

  • C:\WINDOWS\System32[ad#ad2-right]

  • C:\WINDOWS

  • %programfiles%\common files\microsoft shared

  • %windir%\temp\

These are just a few but if you look hard enough it can be found most of the time.   Most of the time I use the registry to tell me where these programs are so I can do a further check of the program.  Some of this is not needed with some of the programs that I recommend but this is for those who want to be a through job and make sure the virus is gone.

On my next post we will talk about some good tools for the trade to help get rid of a virus/Trojan.  This little step here is used to  better help identify a virus and also give you chance to google each name on the list of registry and the hard drive  to see if you can identify the virus.

Windows update is getting a revision!

Paul

[ad#ad2-right]According to Computer World, dated Oct 31, 2008 and I’ll quote:

“Over the next couple of months, we’ll be rolling out another infrastructure update to the Windows Update agent (client code),” said an unidentified Microsoft employee on the Windows Update team’s official blog. “This update makes it possible for users to install more than 80 updates at the same time.”

[via Computer World]

Now if your like me and have several computers who need to be updated at a given schedule, you sometimes worry about these updates that come along that might just break your system. I have been using a program call Offline Updater, which does what Autopatcher does really nicely. So why is Microsoft sending out this patch? Two reasons, one they want you to be able to update your operating System without hurting your system integrity.

Now lets talk about the integrity of having to reboot your system. You see, every time you reboot the system, it causes the system hardware some strain.  It is something like having starting up a car, sooner or later you will have the starter go out, because of to much start up.

[ad#ad2-left]Second reason for this is, basically the update software needs to be update yet again for any security flaws or features that might be exploitable.  I am sure there are some and Microsoft probably knows about that we do not.   So that is the second reason, which it is the most obvious reason yet to push out another revision of the Windows update.

What about stopping the update from effecting your system.  The only way that I know of is to prevent Windows from checking for updates.  Which is simple:

Windows XP Version:

[Category View and Classic View]

<Start> / Control Panel / Security / Click Windows Updates

For Windows Vista:

<Orb> / Control Panel/ Security Center/ Windows Update / click “change Settings”

With both ways, you will be able to control four ways to handle Windows updating and they are:

  • Automatic – Will download all necessary updates and install them without your permission or knowledge.  Note some of the updates will automatically reboot your system.  Most commonly they are set to do this every day in the 12am to 4 am period of time.   So when you wake up you would see an log in screen.

    • [ad#ad2-right]

  • Download updates but let me choice which ones to install and when –  This is most commonly used by people who don’t want to bother having to check manually.  It will check and download, then it will let you know.


    •

  • Check for updates but don’t Download them –  This is like the previous one but this will only tell you.  The rest of the decision is in your hands not the computer.  This is good for people who have limited system resources, like Hard drive space.  It still reminds you like the previous one but won’t download any updates.


    •

  • Never check for updates –  This is used for people who don’t want to be bothered with updates and have a way to update manually.  This is commonly used by businesses who have several systems on and don’t want to risk an update causing trouble or weigh down the companies internet by downloading updates un-necessarily.   This option is not to be messed with because it leaves your system with quite a lot of vulnerabilities.  You do this one if you have a set schedule to update each and everyone system. (Extremely Dangerous to do)

With what I talked about, I am hoping you find this useful and to share your discoveries with other people who might want to be able to change how Windows updates are handled on other systems.  If you have comments or questions, please post them in the comment section and someone will be more than glad to help you out.