Alarmingly, it brings insecure cares (5)
I believe the answer is:
scare
'alarmingly it' is the definition.
I can't judge whether this definition defines the answer.
'insecure cares' is the wordplay.
'cares' can be anagrammed to 'SCARE'.
Though, I'm unsure how the anagram is indicated.
'brings' is the link.
Can you help me to learn more?
(Other definitions for scare that I've seen before include "Cause fright, alarm" , "Frighten or intimidate" , "Greatly frighten" , "Panic" , "Startle" .)