84,285,534 programs installed

Should I remove Browser Defender?

What percent of users and experts removed it?
49% remove it51% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #14,051
United States Rank #12,640
Reach 0.0212%
Lifespan of installation (until removal)
< 33.71 days
994.49 days >
Average installed length: 522.53 days


VersionDistribution 23.23% 20.05% 25.67% 2.93% 20.05% 2.44% 1.96% 0.98% 1.96% 0.73%

Other programs by Threat Expert

Browser Defender 3.0

Remove Browser Defender 3.0
Powered by Reason Antivirus

What is Browser Defender?

Browser Defender is a utility developed by PC Tools which protects the computer by providing informative assessment of websites and the possible dangers they pose, thereby allowing the user to make better informed choices when browsing the Internet. A green, red or yellow rating let the user know immediately if, in ThreatExpert's opinion, the website is safe to visit, harmful or needs to be visited with caution. If the website is not amongst the crawled domains, then a grey rating will be shown.


The most common release is, with over 98% of all installations currently using this version. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC. Upon being installed, the software adds a Windows Service which is designed to run continuously in the background. Manually stopping the service has been seen to cause the program to stop functing properly. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. The program adds a toolbar to Microsoft Internet Explorer. The primary executable is named PCTBrowserDefender.dll. The setup package generally installs about 15 files and is usually about 14.86 MB (15,582,840 bytes). The installed file PCTBDUpdate.exe is the auto-update component of the program which is designed to check for software updates and notify and apply them when new versions are discovered.

Program detailsProgram details

URL: www.browserdefender.com
Installation folder: C:\Program Files\Spyware Doctor\BDT\
Uninstaller: "C:\Program Files\Spyware Doctor\BDT\unins000.exe"
Estimated size: 14.86 MB

Program filesFiles installed by Browser Defender 3.0

Program module:PCTBrowserDefender.dll
Name:Threat Expert Ltd. Browser Defender
Browser Defender Toolbar
Path:C:\Program Files\Spyware Doctor\BDT\PCTBrowserDefender.dll
Additional files:
  • BDTKDSClient.dll - Threat Expert Ltd. Browser Defender (Browser Defender KDS Client)
  • BDTUpdateService.exe - Browser Defender Update Service
  • CommLib32.dll - Browser Defender CommLib
  • FGuard.exe - Browser Defender Social On Disk
  • FGuardHks.dll
  • PCTBDCom.dll - Browser Defender Com
  • PCTBDUpdate.exe - Browser Defender Updater
  • PCTBrowserDefender.dll - Browser Defender Toolbar

Program behaviorsBehaviors exhibited

Internet Explorer BHO
  • PCTBrowserDefender.dll is installed in Internet Explorer as a BHO (Browser Helper Object) under the name 'PC Tools Browser Guard BHO' with the class of {2A0F3D1B-0909-4FF4-B272-609CCE6054E7} (Browser Defender BHO).
Internet Explorer Toolbar
  • PCTBrowserDefender.dll is loaded as Internet Explorer Toolbar with the name 'PC Tools Browser Guard' with the class of {472734EA-242A-422B-ADF8-83D1E48CC825}.
Internet Explorer URL Search Hook
  • PCTBrowserDefender.dll loads into IE as a URL Search Hook named 'PC Tools Browser Guard' with a class of {472734EA-242A-422b-ADF8-83D1E48CC825} in order to redirect unknown URL searches.
Internet Explorer Web Browser
  • PCTBrowserDefender.dll installs an IE Web Browser in Internet Explorer named 'PC Tools Browser Guard' with a class of {472734EA-242A-422B-ADF8-83D1E48CC825}.
Scheduled Task (Boot/Login)
  • FGuard.exe is automatically launched at startup through a scheduled task named 2.
  • BDTUpdateService.exe runs as a service named 'Browser Defender Update Service' (Browser Defender Update Service).
Startup File (All Users Run)
  • FGuard.exe is loaded in the all users (HKLM) registry as a startup file name 'PCTools FGuard' which loads as C:\Program Files\PC Tools Security\BDT\FGuard.exe.

Program resource utilizationResource utilization averages

Memory:20.95 MB
21.09 MB average
Total CPU:0.0903925710%
0.031193% average
Kernel CPU:0.00484246%
0.016088% average
User CPU:0.08555011%
0.015104% average
Memory:2.55 MB
Kernel CPU:0.00482862%
CPU cycles/sec:5,105
I/O reads/min:27 Bytes

How do I remove Browser Defender?

Quickly and completely remove Browser Defender 3.0 from your computer by downloading "Should I Remove It?", its 100% FREE and installs in seconds (click the button below).
Or, you can uninstall Browser Defender from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Browser Defender 3.0, click it, and then do one of the following:
    • Windows Vista/7/8: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Browser Defender.

How do I reset my web browser?

If your web browser homepage and search settings have been modfied by Browser Defender 3.0 you can restore them to their previous default settings.
Microsoft Internet Explorer
Mozilla Firefox
Google Chrome

Win 7 (SP1) 56%
Win Vista 0%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 49%
Keep it 51%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 62.10%
Windows Vista 17.36%
Windows XP 13.20%
Windows 10 7.09%
Windows Server 2003 0.24%
Which OS releases does it run on?
Windows 7 Home Premium 34.16%
Windows 7 Ultimate 16.58%
Windows Vista Home Premiu... 13.12%
Microsoft Windows XP 12.87%
Windows 7 Professional 7.92%
Windows Vista Home Basic 2.97%

Distribution by countryGeography

47.42% of installs come from the United States
Which countries install it?
  United States 47.42%
  United Kingdom 5.36%
  Germany 4.56%
  Canada 4.56%
  Italy 2.78%
  Taiwan 2.58%
  France 1.98%
  Australia 1.79%
  Netherlands 1.79%
  Belgium 1.59%
  Spain 1.59%
  Iran 1.59%
  Sweden 1.39%
  Saudi Arabia 1.39%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.97%
Dell 23.60%
Acer 18.73%
Toshiba 9.74%
ASUS 5.62%
American Megatrends 3.75%
Intel 1.87%
Lenovo 1.12%
Sahara 1.12%
Gateway 0.75%
Common models
HP Pavilion dv7 Notebook ... 3.13%
Dell Inspiron N5010 3.13%
HP Pavilion dv6 Notebook ... 3.13%
Hewlett-Packard Compaq Pr... 1.88%
Gigabyte G31M-ES2L 1.88%


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