Do we have any good resources on WebServices Security? Any book, pdfs, articles and even the detail answers regarding the securing web services would be appreciated.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
OWASP (The Open Web Application Security Project) provides a lot of resources for developers and pen-testers.
To the degree that web applications qualify as web services, are accompanied by web service APIs, or can be hardened/probed using the same techniques as web services, OWASP is a great resource.
You might start at their Web Services page.