1.   Despite that, the experts said security at nuclear facilities there is weak and there are few controls at national borders.

2.   Parents, however, have protested against lax security at the school.

3.   Security at prisons holding category A prisoners is already very tight, with rigorous searching procedures.

4.   Security at the conference was extremely tight.

5.   The report criticizes the lax security at many prisons.

6.   There is tight security at the airport and all baggage is being searched.

7.   There had been a major breach of security at the air base.

8.   ...widespread breaches of security at Ministry of Defence bases.

9.   We have to go through security at the airport.

10.   Traded options allow investors to enjoy the price movements of the underlying security at a fraction of the cost of buying that security.