ful·crum noun the point on which a lever rests or is supported and on which it pivots.
a thing that plays a central or essential role in an activity, event, or situation.
"research is the fulcrum of the academic community"
se·cu·ri·ty noun
1.the state of being free from danger or threat. "the system is designed to provide maximum security against toxic spills" Similar: certainty safe future assured future safety reliability dependability solidness soundness
2. a thing deposited or pledged as a guarantee of the fulfillment of an undertaking or the repayment of a loan, to be forfeited in case of default.
Sounds like the fulcrum security is a can't miss ;-) !