Adjective : an insecure person. ,He was insecure about the examination. ,an insecure stock portfolio. ,an insecure ladder.    From Dictionary.com. 

Although I agree with a positive relation between the spam and the rate of insecureness, I think that it is a logarithmic relationship instead of exponential.    From Wordnik.com.  [But I'm just fine. Right, Honey? HONEY?!?] Reference

The reward for making our leaders accountable for their actions is simple -- confusion will bring awareness, insecureness will produce security, and taking a position of dissent will birth a unified force of checks and balances that will embolden peace and justice with the sanctity of trust.    From Wordnik.com.  [The Enemy Within; September 11 Attacks Revisited] Reference

The bars and rods quiver, the whole lively fabric is full of a tremor, but one that conveys no sense of insecureness.    From Wordnik.com.  [Pipefuls] Reference