One more question I have done security assessment basically all I do is Vulnerability Scanning is that what general industry practise ?? or should i be doing more steps..anything i refer and Learn.
Hello,
Vulnerability scanning is only one "technical" part of the risk assesment process. The "business" part is equally important.
One method (not the best) to approacjh Risk Assesment is:
RISK = THREAT + WAY OF ATTACK + VULNERABILITIE + ASSET + IMPACT
These 5 components have to be estimate into the organization specific context with the approval of the business.
Once this estimate is done, business,
and only business, have to evaluate the risk and then decide to keep, avoid, reduce or transfer the risk.
You're only here to estimate the risk. Executives and business people are here to evaluate it and decide the way to treat itAt this point, it is possible to determine
necessary and sufficient security objectives and requirements.
This approach is called "EBIOS" and is promoted by the DCSSI and recognized by the French administrations and, accordiang to me, has a some good pedagogic virtues
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more info)
Hope this helps

(sorry for my bad english, you guess it... i'm french)