Crimes contributing to everybody's insecurity (4)
I believe the answer is:
sins
'crimes' is the definition.
'contributing to everybody's insecurity' is the wordplay.
'contributing to' indicates a hidden word.
'SINS' is hidden in the letters of 'everybodys insecurity'.
(Other definitions for sins that I've seen before include "Breaches of moral law" , "Moral lapses" , "Serious offences" , "Wrongdoings" , "Evils" .)