Don't let these parasites into your system in the first place!
The following tips help, but methods (vectors) constantly change.
►FIREFOX: Tools> Options> Privacy> top drop menu set to "Firefox will use custom settings..."> Check 'Accept Cookies from sites'
& Un-Check 'Accept 3rd Party cookies'
This list is a few of the essential items you should have.
Note that the Internet is so fluid and dynamic, and exploits crop up almost hourly, it is imperative to stay current with all phases of Windows defensive measures, and keep all rubbish out: stopped @ your doorstep.
►NoScript:
https://addons.mozilla.org/en-US/firefox…
►AdBlock Plus:
http://adblockplus.org/en/
►Better Privacy:
https://addons.mozilla.org/en-US/firefox…
►Flashblock Plus:
https://addons.mozilla.org/en-US/firefox…
►Ghostery (reveal the web bugs, ad networks and widgets on every page);
https://addons.mozilla.org/en-US/firefox…
[After install it MUST be turned "ON": FF Tools> add-on's> Extensions> Ghostery> Options button> Blocking tab> "Select" All & "ON"> Save.
Thanks "SurfUp" contributor].
►Web of Trust:
https://addons.mozilla.org/en-US/firefox…
Most of these will confine your interaction with a website (which is a good thing: i.e. allowing you to verify if you want the interaction), but on the other hand, they speed up browser page loads, as they block a lot of the 3rd party assets being requested from alternate servers.
INTERNET EXPLORER: Tools> Internet Options> Privacy> Advanced:
here check 'Override automatic....'; 'Allow session cookies'; 'Allow 1st party cookies' & 'Block 3rd Party Cookies'.
Using IE (all flavors) and allowing "active scripting" is the single biggest mistake people make. "Drive by installs", "Opacity based attacks", and many other malware problems arise from this feature alone...(switch to Firefox).
And, get this installed: ►"HOSTS file" (from mvps.org) which blocks evil webpage assets from re-directs which install malware or trashware. (Vista requires special instructions; on-page link)
http://www.mvps.org/winhelp2002/hosts.ht…
[thanks "tempo1" contributor]
**********
Rouge malware and escalating server based spyware are becoming indistinguishable & may cause system misbehavior .
Requires "Opt Out" on EVERY browser on EVERY machine.
Google here:
http://www.google.com/privacy_ads.html
Yahoo here:
http://info.yahoo.com/relevantads/
Turn off 'spell check' may help, as this sends keystrokes back to the server also, which may be used to 'target' advertising.
When installing ANY new application, check the EULA or ToS for 'Toolbars' and/or other crud they try to slip past ya'.
Good luck. ;)