How to get secured jobs ?

There is nothing like secured or insecure job. If you are having skills to do things and if there is a demand of that skill in market, your job is secure. Focus on demand of market and enabling skills in you which are in demand. That itself is job security. 

Though their are certain secured jobs in like under Civil Services, Public Sector Banks, University Lecturers & few others, it is still hard to crack these jobs as well. 

At the same, my suggestion would be that in order to have a secured job in today's Revolutionized Corporate World, you need to ensure that you are at par with the Knowledge & Skills which are required in the Market Segment or The Industry you are aiming for.

Once your goal is clear, start working on yourself with the specializations needed in that Industry or the specific job, through which ultimately you become an Irreplaceable Candidate.