X
Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

How do I stop web sites from placing their toolbars on my Firefox browser without my permission?

Posted

I was searching on Firefox just now and a site instantaneously downloaded their own tool bar without my permission. I rebooted and deleted my cache and opened a new Firefox browser and the bar is gone.

Additional System Details

Installed Plug-ins

  • SiteAdvisor
  • Motive Plugin for Mozilla Browsers
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.5"

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0

More Information

Application Basics
Name
Firefox
Version
4.0
User Agent
Mozilla/5.0 (Windows NT 6.0; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Profile Directory
Open Containing Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
Microsoft .NET Framework Assistant
0.0.0
true
{20a82645-c095-46ed-80e3-08825760534b}
XUL Cache
1.0
true
{bcacb9db-5082-42ab-a02e-f6d7c42441e1}
avast! WebRep
6.0.1367
true
wrc@avast.com
McAfee SiteAdvisor
3.4.0
true
{4ED1F68A-5463-4931-9384-8FFF5ED91D92}
Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.places.smartBookmarksVersion
2
browser.startup.homepage
www.att.net
browser.startup.homepage_override.buildID
20110318052756
browser.startup.homepage_override.mstone
rv:2.0
browser.tabs.autoHide
true
extensions.lastAppVersion
4.0
keyword.URL
http://search.yahoo.com/search?fr=mcafee&p=
network.cookie.prefsMigrated
true
places.database.lastMaintenance
1323662260
places.history.expiration.transient_current_max_pages
120714
print.print_printer
HP Deskjet 3500 Series
print.printer_HP_Deskjet_3500_Series.print_bgcolor
false
print.printer_HP_Deskjet_3500_Series.print_bgimages
false
print.printer_HP_Deskjet_3500_Series.print_command
print.printer_HP_Deskjet_3500_Series.print_downloadfonts
false
print.printer_HP_Deskjet_3500_Series.print_edge_bottom
0
print.printer_HP_Deskjet_3500_Series.print_edge_left
0
print.printer_HP_Deskjet_3500_Series.print_edge_right
0
print.printer_HP_Deskjet_3500_Series.print_edge_top
0
print.printer_HP_Deskjet_3500_Series.print_evenpages
true
print.printer_HP_Deskjet_3500_Series.print_footercenter
print.printer_HP_Deskjet_3500_Series.print_footerleft
&PT
print.printer_HP_Deskjet_3500_Series.print_footerright
&D
print.printer_HP_Deskjet_3500_Series.print_headercenter
print.printer_HP_Deskjet_3500_Series.print_headerleft
&T
print.printer_HP_Deskjet_3500_Series.print_headerright
&U
print.printer_HP_Deskjet_3500_Series.print_in_color
true
print.printer_HP_Deskjet_3500_Series.print_margin_bottom
0.5
print.printer_HP_Deskjet_3500_Series.print_margin_left
0.5
print.printer_HP_Deskjet_3500_Series.print_margin_right
0.5
print.printer_HP_Deskjet_3500_Series.print_margin_top
0.5
print.printer_HP_Deskjet_3500_Series.print_oddpages
true
print.printer_HP_Deskjet_3500_Series.print_orientation
0
print.printer_HP_Deskjet_3500_Series.print_page_delay
50
print.printer_HP_Deskjet_3500_Series.print_paper_data
1
print.printer_HP_Deskjet_3500_Series.print_paper_height
11.00
print.printer_HP_Deskjet_3500_Series.print_paper_size_type
0
print.printer_HP_Deskjet_3500_Series.print_paper_size_unit
0
print.printer_HP_Deskjet_3500_Series.print_paper_width
8.50
print.printer_HP_Deskjet_3500_Series.print_reversed
false
print.printer_HP_Deskjet_3500_Series.print_scaling
1.00
print.printer_HP_Deskjet_3500_Series.print_shrink_to_fit
true
print.printer_HP_Deskjet_3500_Series.print_to_file
false
print.printer_HP_Deskjet_3500_Series.print_unwriteable_margin_bottom
0
print.printer_HP_Deskjet_3500_Series.print_unwriteable_margin_left
0
print.printer_HP_Deskjet_3500_Series.print_unwriteable_margin_right
0
print.printer_HP_Deskjet_3500_Series.print_unwriteable_margin_top
0
privacy.clearOnShutdown.passwords
true
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
privacy.sanitize.sanitizeOnShutdown
true
privacy.sanitize.timeSpan
0
security.warn_viewing_mixed
false
security.warn_viewing_mixed.show_once
false
Graphics
Adapter Description
ATI Radeon HD 3200 Graphics
Vendor ID
1002
Device ID
9612
Adapter RAM
Unknown
Adapter Drivers
atidxx32 atidxx64 atiumdag atiumdva atiumd64 atiumd6a atitmm64
Driver Version
8.593.3.0
Driver Date
4-7-2009
Direct2D Enabled
Blocked on your graphics driver. Try updating your graphics driver to version 10.6 or newer.
DirectWrite Enabled
false (0.0.0.0, font cache n/a)
WebGL Renderer
(WebGL unavailable)
GPU Accelerated Windows
0/3

cor-el
  • Top 10 Contributor
  • Moderator
10759 solutions 96838 answers

You have the XUL Cache 1.0 extension installed and that extension is considered malware.


Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

See also: