Online security
 

Hi
I am using Linux RedHat Server. I am using d-link wireless network but connected wired network to Linux. When I am online if my cell phone near my computer I can hear some noice call coming in or cell phone signals through my pc speaker and some time my linux borwer moving/changing the screen.going back or closing the browser.
Is it somebody hacking my system?
thanks
Dave

YES, IF THAT HAPPENS YOU HAVE TO GET UNDERNEATH YOUR DESK, AND PULL YOUR POWERCORD OUT FOMR THE BACK OF YOUR COMPUTER, and it is very important that you have to stay underneath your desk for about 2 hours, after that you get out of your desk, and hit your keyboard against your monitor several times, after which, you can try to turn your computer back on...

repeat steps above untill that noice will go away.

This is quite normal for cell phone interference (at least for CRT screens). Pulsating sounds coming from the speakers when a cell phone is close, image distortions on the screen, such as vibrating images, etc.

This part I'm not so sure about. I've never seen cell phone interference trigger window closure. I mean, that would have to be interference with the mouse or the PC itself then (not the monitor), right? Anyone else seen this sort of behavior before? Even if you do indeed experience window closure from cell phone interference, I wouldn't consider that a symptom of being cracked. At worst, it's a really interesting DoS vulnerability. :)

If you could post back and clarify that this is indeed what you meant by "closing the browser" it would be great.

Thanks for your reply, Yes indeed thats what I meat by closing the browser. Some time it closes my browser, some time goes back the browser.
This symptom happening when I am on the phone too and I am not touching mouse or keyboard.

I agree the noise and screen distortion is interference. I used to be able to faintly here radio programs from my home stereo subwoofer even when the stereo was powered off. I still don't know where the interference came from. CRT monitors were more susceptible if a AC power block was near the back of the monitor. My LCD screen looks "wavy" at the corners if I turn the speaker volume up (my speakers are positioned behind the sides) or if the floor vibrates nearby.

Which browser do you use? Is your system setup for IR remote control functionality, maybe for a media player? When it goes back by itself, does it happen only on certain sites? I've been to some sites that if browsing activity has been idle for a certain time the page will change back to the site's home.

When the browser closes itself, unless you actually see the mouse cursor clicking on the close button, that can be just a random crash from a bug, memory leak, bad web page content, sun spots, cycle of the moon or just looking at it funny.

It doesn't sound like anything to worry about, unless the browser activity becomes more obvious of being remotely accessed - mouse cursor moving without your control, words appear that you're not typing, the current page changing to one that you would have to type the url, other application mysteriously opening...

Just curious, are you keyboard and/or mouse wireless by any chance?

All wired, I am not using any wireless.
thanks

I use Mozilla 1.4.3 browser. My system do not have setup IR remote control funcationality.
It happen only on certain sites.
thanks

I am now compelled to think that your browser closure issue is not related to the cell phone interference issue. I was originally under the impression that the closure would only happen during an interference episode. As mentioned by dracolich, this could very well be a browser bug. AFAICT your browser is several years old and unsupported, right? Seems like a perfect time to upgrade to a modern browser - the latest Firefox, perhaps?

Ok. I will upgrade my browser. Thanks win32sux and dracolich for taking time to answer my question. It was very helpful.