The Crawl depth is the level, in which pages inside a site are indexed by a search engine. Page within the same website, which is directly linked with the web page has either a raster depths of 1 links.
These pages are linked back, within the raster range of 1 site have a raster depths of 2 and many more.
It is a site or subsites, where getting increasingly closely similar to a broader optical disks. It is best to ensure, that neither sites greater then 4 click is open.
Even if you invest in the best possible security infrastructure for your corporate network, you will still be vulnerable to attacks which exploit human shortcomings. An example is where an attacker manipulates a company employee to get the system access password in return for a favour. Now he can use the password to bypass all security infrastructure and gain access to critical data and code.
