How do I clear something running on Firefox which is compromising security by asking for all passwords on bank sites etc.

Question

I believe I've got some kind of spy ware or malware running in Firefox
If I log into my Sainsburys Bank site and enter my user name and password I should be directed to a new page asking for one of 4 possible passwords before I can access my account. However after a slow connection I am asked to give ALL 4 of the passwords so something is not right as confirmed by Sainsburys.
Last night I un installed Firefox then re installed and it worked okay but this morning the same problem has occured.
Can you please advise a solution .
Yours EJH

Answer 1

Do you have a secure connection to your bank site?<br />
If that is the case then check the certificates to make sure that you are connected to your bank site.<br />
If you do not have a secure connection with your bank site then try to change the protocol from http: to https: in the location bar while visiting the home page of your bank and verify again by clicking the website favicon.
See [[Site Identity Button]]
If it is a phishing attempt then you should contact your bank site and inform them about that.
Do a malware check with some malware scan programs.<br />
You need to scan with all programs because each program detects different malware.<br />
Make sure that you update each program to get the latest version of the database before doing a scan.<br />
* http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
* http://www.superantispyware.com/ - SuperAntispyware
* http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
* http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
* http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked and [[Searches are redirected to another site]]