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unprotected wifi, then changed it to "protected"


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#1 manyflowers

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Posted 12 September 2009 - 02:46 PM

Greetings to this great forum!
I need your advice about something important:

I turned off my wirless connection protection for a bit, but I had accidentally forgotten to change it back to "protected" mode (using WPA).
About 2 weeks after, one day I went to my pc to surf, when I noticed that my connection was too slow.
Suddenly my explorer closed without message at all. I then opened it again and it closed (without message) again, for second time.
Opening it again for third time, it didnt closed but I had to wait for ages for a simple web page to be opened.
Then, I noticed that my "WLAN" light of my router showed that there was wirless activity going on (and my laptop was off).
I then remembered that I had left wifi without password and I immediately set a (strong) password.
After that, the "WLAN" light of the router stopped showing wirless activity and I was surfing smoothly.

So I suppose that someone was surfing using my router (wirless) and my connection was slowing down because of him.

My questions are:
1) Was it possible for him to connect to my pc and watch my activity?
2) If 1 has happened and I had my msn open (or other applications) is it possible for my msn to be infected or something?
3) Is it possible, if 1 happened, to keep doing it even after I put on a password?
4) That my (internet) explorer closed 2 times without a reason and message, has something to do with this?
5) Is it possible for my pc to be infected at the moment?

Additional Notes:
a) I have changed, since months ago, the login password of my router.
b ) On my pc I have "localisation of network" on, "file sharing" on, "file sharing with password" on
c) I tried to (without any hacking activities, cause I dont know) to connect to my pc from my laptop, while having wifi protection off and I could only acess the printer (which is connected to the pc)
d) I did a full scan using Norton and it found nothing at all.
e) When I open my pc, I have put passord in order to connect to my user profile.
f) I have selected "public internet connection" in my internet connection options.
g) I have vista.

Sorry for my english because its not my native language.
Thanks in advance!

Edited by manyflowers, 12 September 2009 - 02:49 PM.


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#2 manyflowers

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Posted 13 September 2009 - 03:12 AM

No answers yet? :thumbsup:

#3 manyflowers

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Posted 13 September 2009 - 03:52 PM

Please I need your help, if its possible reply to me, thanks

#4 InflictedOwned

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Posted 13 September 2009 - 04:55 PM

As I'm waiting for a reply to my question, I can try to answer yours.

1) More than likely, no. Unless your neighbors really know what they're doing, then they wouldn't know how to. Even if they did, they wouldn't be leaching off your wireless.
2) The person(s) could have changed some of your router firewall settings, but if you have good enough firewall/anti-virus, you shouldn't be in any trouble.
3) They could always try and guess/know your password, but that's unlikely.
4) They may of been doing activities that would require large amounts of bandwidth, slowing down your connection.
5) There's always a chance you could be infected.

Edit: Do yourself a favor and use something else than Norton.

Edited by InflictedOwned, 13 September 2009 - 08:30 PM.


#5 boopme

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Posted 13 September 2009 - 09:37 PM

Hello as suggested let's check for infection.

Next run MBAM (MalwareBytes):

NOTE: Before saving MBAM please rename it to zztoy.exe....now save it to your desktop.

Please download Malwarebytes Anti-Malware and save it to your desktop.

alternate download link

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
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