Security Updates-Do I Need Them???????

Thurs. 18.46
Most of the updates that I am offered for vista claim that they have been made available to prevent my system from being taken over or words to that effect. I have the pro versions of avast, sas and mbam, so do I really need these updates or can I ignore all of the ‘security’ ones. Forgive me if I am being naive? :-[

I would not recommend ignoring them as the will upgrade system files and make malware attacks that bit more difficult

Thank you for your reply. Will follow your advice.