如何查出計算機&電子郵件監視或暗中偵察的軟件

張貼在2007年8月16日在1:46 pm

歡迎 網上技術技巧一種巨大資源為計算機講解，技術新聞、軟件回顧和個人電腦技巧。如果您這裡在新的，并且您喜歡內容，您能訂閱對我 RSS飼料得到每日技巧。感謝參觀!

作為它讚成，我定期地監測雇員的計算機和電子郵件。它是根本的在工作環境裡為行政目的並且為安全。監視電子郵件，例如，允許您阻攔可能包含病毒或spyware的附件。當我必須連接到用戶的計算機，并且在直接地之時工作他們的計算機是解決問題。

然而，如果您認為您被監測，當您不應該是時，有幾一點欺騙您可能使用確定您是否正確。首先，對顯示器某人的計算機意味著他們某人可以觀看您在您的計算機在真正的時間做着的一切。阻攔色情站點，去除附件或阻攔發送同樣的消息到多個新聞組，在它有您的Inbox之前等等真正地不監測，它是更可能過濾。

計算機監視

那麼現在，如果您仍然認為某人在您暗中偵察，這什麼您能做! 好事現在不是Windows XP SP2和窗口景色支持多一致連接，當某人被採伐入控制臺時(有一個文丐為此，但我不會憂慮)。這的什麼手段是，如果您被採伐入您的XP或景色計算機(像您現在是，如果您讀此)，并且某人将連接到它使用 固定遙遠的桌面 窗口特點，您的屏幕將變得鎖著，并且它將告訴告訴被聯絡的您。

如此為什麼那是否是有用的？它是有用的，因為它意味那為了某人能連接到您的會議，无需您注意或您的被接管的屏幕，他們有用途第三方軟件，并且查出第三方軟件在窗口比一個正常過程是很多容易。

我們那麼現在尋找第三方軟件，通常指遙控軟件或虛擬網絡計算的(VNC)軟件。首先，要做的容易的事是簡單登記您的起動菜單所有節目，并且安裝檢查是否某事喜歡VNC， RealVNC、TightVNC、UltraVNC、LogMeIn、GoToMyPC等等。很多時期它人們是散漫的并且計算一名正常用戶不會知道什麼軟件片斷是和簡單地忽略它。如果安裝那些節目中的任一個，則某人可能連接到您的計算機，不用知道它的您，只要節目在背景中跑，當窗口服務。

That brings us to the second point. Usually, if one of the above listed programs are installed, there will be an icon for it in the task bar because it needs to be constantly running to work.

Check all of your icons (even the hidden ones) and see what is running. If you find something you’ve not heard of, do a quick Google search to see what pops up. It’s usually quite hard to remove something from the taskbar, so if there is something installed to monitor your computer, it should be there.

However, if someone really sneaky installed it and nothing shows up there, you can try another way. Again, because these are third-party apps, they have to connect to Windows XP or Vista on different communication ports. Ports are simply a virtual data connection by which computers share information directly. As you may already know, XP and Vista come with a built-in Firewall that blocks many of the incoming ports for security reasons. If you’re not running an FTP site, why should your port 23 be open, right?

So in order for these third-party apps to connect to your computer, they must come through a port, which has to be open on your computer. You can check all the open ports by going to Start, Control Panel, and Windows Firewall.

Click on the Exceptions tab and you’ll see see a list of programs with check boxes next to them. The ones that are checked are “open” and the unchecked or unlisted ones are “closed”. Go through the list and see if there is a program you’re not familiar with or that matches VNC, remote control, etc. If so, you can block the program by un-checking the box for it!

The only other way I can think of to see if someone is connected to your computer is to see if there are any processes running under a different name! If you go to the Windows Task Manager (press Cntr + Shift + Esc together) and go to the Processes tab, you’ll see a column titled User Name.

Scroll through all the processes and you should only see your user name, Local Service, Network Service, and System. Anything else means someone is logged into the computer!

Email & Web Site Monitoring

To check whether your email is being monitored is quite simple. Always, when you send an email from Outlook or some email client on your computer, it has to connect to the email server. Now it can either connect directly or it can connect through what is called a proxy server, which takes a request, alters or checks it, and forwards it on to another server.

If you’re going through a proxy server for email or web browsing, than the web sites you access or the emails you write can be saved and viewed later on. You can check for both and here’s how. For IE, go to Tools, then Internet Options. Click on the Connections tab and choose LAN Settings.

If the Proxy Server box is checked and it has a local IP address with a port number, then that means you’re going through a local server first before it reaches the web server. This means that any web site you visit first goes through another server running some kind of software that either blocks the address or simply logs it.

For your email, you’re checking for the same thing, a local IP address for the POP and SMTP mail servers. To check in Outlook, go to Tools, Email Accounts, and click Change or Properties, and find the values for POP and SMTP server.

If you’re working in a big corporate environment, it’s more than likely that the Internet and email are being monitored. You should always be careful in writing emails or browsing web sites while at the office. Trying to break through the security also might get you in trouble if they find out you bypassed their systems! IT people don’t like that, I can tell you from experience!

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17 Responses to “How to detect computer & email monitoring or spying software”

John Kinas said on : August 17th, 2007 at 10:47 am

Good review of the more intrusive monitoring methods, but it just scratches the surface. Medium and large organizations typically have all the tools they need to perform very thorough monitoring of web and email traffic without ever touching or directly connecting to your computer because they control firewalls and routers through which internet traffic must pass. Not to increase the paranoia level of your readers, but I would advise everyone who works in a large or medium-sized organizaton to carefully read the organization’s internet use policy. Most corporate internet use policies explicitly warn that employees that they have no reasonable expectation of privacy when using corporate IT resources and that any computer use may be monitored. As the information security officer for a medium-sized organization, I would advise readers to assume that all activities may be monitored and act accordingly. Wait until you’re on your home system before emailing or browsing to anything you would prefer not to explain to your boss.

akishore said on : August 17th, 2007 at 10:52 am

Hi John,

Good point. I wanted to make it clear though that I was trying to focus more on someone actually connecting to your computer terminal and watching everything on your screen as you do it, as opposed to simply capturing all the data that comes out of your computer (email, web sites, etc).

Definitely, there is really now way to get around web and email monitoring at a large or medium sized company, they have way too many checks in place, but usually no one really connects to an employees computer and watches what they are doing.

Cidinho said on : August 17th, 2007 at 11:54 am

If you bypass the monitoring, be careful, cause the first thing they’ll think is that you are covering something bad you’ve done…

Tom Morris said on : August 17th, 2007 at 12:12 pm

Absolutely mirror the first comment. Personally, I’m trying as hard as possible to setup things like SSH tunneling out of unfriendly corporate and educational networks. Encryption is another important component.

Bill said on : August 18th, 2007 at 8:38 am

Thanks for the information, it was helpful. But what about Teredo being selected under LAN Settings/Services? Is that necessary?

greg burkman said on : August 18th, 2007 at 9:39 am

Any advice for those of us on a Mac?

I’m trying as hard as possible to get some movies edited.

Mestizo said on : August 19th, 2007 at 10:59 pm

“If you’re not running an FTP site, why should your port 23 be open, right?”

Correction. FTP is port 21.. Telnet is port 23.

freak3dot said on : August 21st, 2007 at 11:22 am

I had an IT guy just think that I tried to bypass webmonitoring once and he was not happy. BTW, don’t use putty to SSH into your computer at home. SSH can also be used to tunnel through proxy servers, which is what I was accused of.

freak3dot

Tom said on : September 2nd, 2007 at 3:22 am

Wanted to say thank you. I was able to track a remote vnc on my computer thanks to you. I thought my friend was monitoring me it turned out to be true. I now know he was watching me in real time. Also HE is more than likely a reason I was canned from my job. I confronted him but claims I’m paranoid. I have saved your info for future reference and will advise all my friends of your info. I think you should write more stuff on administration passwords/guest users on one’s computer. You see we get friends to do installs we don’t know what they are doing.

Thanks

simonje said on : September 8th, 2007 at 5:36 am

Haha. Information is good but if really care about security would you not use Microsoft in first place? Thanks to it darkhats have so many zombie networks now need GUI tools to manage huge supercomputer clusters! Trojans have not handy system tray clues either! Anyway even Sony can install root kits now ok.

At work, microsoft has tools for your admin to watch and control the PC quietly (and remember also NSA backdoor still). Your work neighbor can just look over the shoulder.

At home, aircrack your wireless keys in 10 mins - some longer for WPA. Swap your router ESSID for mine and I can sniff all you p0rn traffic and bank account from my car!

Even if you not connected to network monitor can be read thru a wall.

Best thing is not to worry and be just good boy and girls.

merv said on : September 12th, 2007 at 7:14 pm

Quick facts. 1 - Wrote a kind of story 10 years ago and due to approach to give evidence at the Cole Inquirey into the AWB in Australia 12 months ago, decided to get the story out. 2 - Techno mate of mine threw up this website for me and after 6 months pulled most of the content off due to approach by production company to put it into print and also do a doco. 3 - Problem was I had 2,500 people on my mailing list by then, so I’ve left up a few pages until everything comes out in December. BIG POINT number 4 - My office computer, home computer, laptop and even phones have been causing me grief. My ip account shows uploads of 300 + meg a day, when I average 2 meg. I’ve cleaned them all out twice. 5 - I use visual route to trace site hits now and then, and a literally get 30 a day from big brother - which is fascinating in itself. I never placed all content on the net, but backraces are revealing knowledge of material obviously sucked off my computers. 5 - lately the Chinese are really hitting the site a lot.

I really think these guys can just bypass any damn firewall they like. NSA chip or not.

brady said on : September 21st, 2007 at 8:44 pm

port 23 is not ftp, it’s telnet.

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