Computer Virus; Basic Prevention  

Posted by Akmal in

I think I have cyber bugs in me. Lately, my drafts are about computers, well simple things that I know. Ahhh, why not :D

This time is about computer virus. It is a pain; easily spread, hardly killed has become some sort of policy, especially for worms and trojan horses. People with antivirus; any kind of antivirus, even though you update it regularly, don't trust it too much. Not every time it will work, although most often it will. Computer viruses are like virus that causes flu; they evolve. You come out with a new solution, they come out with a new 'strain'.

Virus problems is very rare in MacOS and Linux operating system; almost none. But for windows users, especially XP, you are vulnerable to almost every single virus of millions available. Some viruses are just nuisance with no big threat on the system, but some are going to make your turbo charged internet connectivity slowed to the snail level, or perhaps your startup speed time extended up to 30 minutes or even hours.

Prevention is always the best step in handling with diseases, and it seems like the step is highly applicable and effective in term of 'computer diseases' too. Whoever infected once by dangerous viruses knows the miseries of unbootable system, unmountable volumes, inaccessible harddisk partitions, especially when you have several critical assignments to submit.

1From my observation, the main vector of the viruses is thumbdrive and other portable volume of memories like memory cards.

These several points to keep your computer safe, just before the virus invaded in. Most of the times, it works.

1/ Avoid autorun especially the thumbdrives. You can disable this in the Group Policy setting. Access group policy by Run (start button+R) and type "gpedit.msc" (without quotation).

2/ Make opening Explorer to access thumbdrive a habit. Shortcut for opening explorer: Start Button+E. Do not double click on the main panel, but click once at the structure view of the side panel to safely access file. These first 2 points are crucial as the invasion normally occur at this point.

3/ Make visible the hidden files including the protected system files. Access Folder Option in Control Panel, and go to View (second tab). Mark "Show hidden files and folders" and uncheck "Hide protected operating system files (Recommended)". Be sure which is which, and when there are suspicious executable files, permanently delete the files (Shift+Del).

4/ Antivirus with no regular update is a nuisance. Make sure it is regularly updated.

Those four are the fundamentals I know. Do add some to the list.

WiseUp

picture taken from www.lifehack.org

*update
Doug Woodall from spywarebiz.com reminded us to make sure that the Firewall is properly configured. Trust me, this is your vanguard when you are online.

This entry was posted on Monday, March 24, 2008 at Monday, March 24, 2008 and is filed under . You can follow any responses to this entry through the comments feed .

12 comments

Make sure your Firewall is configured to withstand attacks.
Great article!

March 24, 2008 11:02 PM

douchrti,
Thanks for dropping by sir:)
I see you are the owner of spywarebiz.com yes? Good to have a pro around.
That was an amateurish work only sir spiced up with some observation, some trial and error, some cracked harddisks (due to the errors on the trials hahaha)...
Have a nice day.

March 25, 2008 1:13 AM
Anonymous  

salam,kema...i wonder,how bout if there's a folder i couldn't delete it..it said it's been used by other prog...but,i didn't even run d file..is it one kinda virus?but i updating my antivirus everyday..

March 25, 2008 1:44 AM

Akmal,
There you are another question here.May be my toy here kena virus..getting slower even 3G coverange is perfect e.g LCCT .
Shall we complaint on 3G broadband services as some say TM Strymx is 5star.Another problem unable to install photoshop..with my IntelCore2 duo & 80GB HDD & 512MB DDR2.

March 25, 2008 10:23 AM

anon@1.44am
Thanks for dropping by ya:)
Try check your task manager and take a look at your 'processes' tab. This is going to be a bit tricky, but try to check suspicious process in the list. If you can't even open the task manager in the first place, well you can assume something raid your lappie. None? Try check your registry. I recommend HijackThis, it will recognize working registries at that particular time and also the registries that supposed to work, but the file is either corrupted or missing.
If the file is in your thumbdrive, another easy way to recognize whether it is viral or not is by checking the autorun script. Inside Explorer, press alt+T and go to folder option. Go to View tab and check show hidden folder and uncheck hide protected operating system files (Recommended) and apply the new setting. If your pendrive is set with autorun properties, you'll find a notepad file namely autorun.inf. Double click on the files and check the executable file that is located at the first line. If the files sounds fishy, like something you never transferred into your pendrive, BINGO! Most of the times, it is a virus. It is quite popular nowadays with h2.exe, and excuse me, this one so far no antivirus can detect it, and it is a trojan if I am not mistaken. If you can't even open File Option or turn on the show hidden files, you can assume that the thing is already in your harddisk.
I hope all that I know do some good to you. Email me if you need help, I'll help with whatever in my capacity.
Have a nice day:)

March 25, 2008 12:37 PM

uncleawang,
Thanks for dropping by:)
Is it your laptop or your connectivity slowed down? Try to compare between when you are in LCCT and in Kuching. If in Kuching everything is A-OK, let's put the blame on Celcom Broadband service hehehe :D
Check your harddisk also. If it is almost full, you can expect your system to slow down, tremendously. That is because your Page Filing dedicated volume has been consumed by other data, maybe your documents like music, movies, etc etc.
If you are using XP, then duo core and 512 physical should be enough to handle Photoshop. Basic consumption for Photoshop CS3 is 500-600mb if I am not mistaken, but haing dual core, the gross I idea is to divide the workload into two. So adding up that on your current RAM and also your Page Filing, I guess no problemo. But you better check your RAM from time to time. It is possible that physical memory capacity being reduced several hundreds Mb. I had a friend, with your spec, but he uses AMD Turion X2, his RAM reduced from 512mb to 300 something Mb. Luckily it was PCFair, so he bought additional Kingston 2Gb RAM for a good price RM 128 if I am not mistaken. To check, you can directly do that by right click on my computer and go to the Properties. Another popular way is to have DirectX Diagnosis. Run (Start button+R) and type dxdiag.
But I think your problem about Photoshop is not your toy la uncle, but perhaps it is just the installation disc. This kind of problem always occur anyway. Hrm.....
Do let me know if there's any problem. I'll try my best o help in my very limited knowledge and capacity.
Have a nice day.

March 25, 2008 1:05 PM

Aduh Akmal, abang tak perasan yg Akmal dok kat Rantau Panjang... kalau lah tau, abang dah cal cal Akmal... apa kata kita bertukar2 hp no.. mmg abang teringin nak jumpa Akmal tapi sayang... errrr... please email me your no at ysukami05@yahoo.com thanks

March 25, 2008 8:16 PM

Bro BM,
Tu la pasal bang. Tp takpe la kan, takde rezeki kali ni, next time belambak lagi :) BTW, saya dah emailkan no saya, nanti sms la ye :)
Have a nice evening bro.

March 25, 2008 10:38 PM

cannot resist to read other comments..i feel like u gonna be a computer expert rather than a dentist or medical students...hehehe...thanks for the info too..

March 27, 2008 12:24 AM

Kak Waliz,
Thanks for dropping by ya :)
Eh, this one is hobby only la kak. Plus, being at my study place viruses are spreading. Although not a pro, but I guess knowing something extra would help. My assignment was once severely damaged due to the virus, and that once is enough, no more, thank you hahahah:)
Have a nice day.

March 27, 2008 8:43 AM

Hello Akmal, you hit the paku on the head re viruses.
Trojans, spybots, keyloggers, malicious cookies, spywares, etc etc...
Presently I have to run my security scans twice a day just to get rid of all those 'tracking cookies' from many blogger's sites those with advertising ads.
These companies pay you money to blog, same time they install tracking cookies that will masuk anybody's blog when you go to theirs.
Depending how many blogs I pop into a day, I can get up to 30 cookies, mostly tracking cookies.
There was two bloggers who had malicious cookies without them knowing.
And viruses? Holy Smoke!
A lot now coming from China, Russia.
And once a week I get a warning (my computer is programmed with many voices), "warning, warning, someone is scanning your computer"! Or, "warning, someone is trying to penetrate your computer"!
I have 12 security systems running apart from a firewall. But still get attacked!
Thats why I am switching to Apple Imac.
Buy a Windows system XP, or Vista, balek rumah, switch on, you get hit!
Too many unguarded ports!
And one of the worst is 'keyloggers'...they secretly read your emails, passwords and even churi your important stuff.
One thing I never do is open emails I don't recognise...or no headers.
And I dislike people who "Forward" emails with 50 or more addresses on them. These people don't realise that a lot might not have good security systems, and thus how viruses spread.
The moment I see someone send me a "FWD" email I delete and destroy completely, plus he or she gets a lecture from me on the dangers. of 'forwarding'.
But the number of cookies from bloggers who have advertising in their blogs sure scary la! all tracking cookies to see where we visit etc. Cheeee!
You stay cool, Akmal, UL.

March 27, 2008 8:04 PM

Uncle Lee,
Hello uncle, how are you?
I know exactly what you want to say about these invaders. Sometimes they are just some stupid nuisances, and at certain times their irritability extends all the way to making your harddisk inaccessible, you know, all that sort of irritations. The bad thing is we never know when they are nuisance with good or bad manner.
I had this in my mind to switch off the cookies acceptance. But this will tremendously slows my browser because most of the site in my list, i visit them frequently. With slow connectivity like the one I am having right now, I took the risk. Not very wise, but hey, now I got all the feeder, helped me a lot:)
Now you got IMac, no need to worry much about all the nuisances. But better be prepared uncle. Don't ever let your guard down, because the hackers who are up to no good are everywhere. Time will tell when they'll come out with malware, virus, whatever that might work well in screwing up MacOS system.
One more thing I don't like is spam mails. They don't really stop, do they? I have a list of spam mails with the header claiming that I am a lottery winner, which is hell no way, I never entered any.
I received an email about one new virus being spread through email attachment. It will destroy the zero point, the point essential for all harddisk to operate, even without OS. Well, I don't think Mac user have to worry much about this. But this one virus is indeed dangerous; both to your data and your pocket. The harddisk destroyed cannot be revived back, as the Zero point were destroyed. I don't know how zero point works, but this one does sounds bad. Really, really bad.
Have a nice day uncle:)

March 28, 2008 1:31 AM

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