Crossword Genius

Frightening people consequently turning on head of security (5)

Ross

I believe the answer is:

ogres

I'm a little stuck... Click here to teach me more about this clue!

'frightening people' is the definition.
The answer and definition can be both people as well as being plural nouns.
Maybe there's an association between them I don't understand?

'consequently turning on head of security' is the wordplay.
'consequently turning' becomes 'og' (I can't justify this - if you can you should give a lot more credence to this answer).
'on' becomes 're' (regarding).
'head of' suggests taking the first letters.
The first letter of 'security' is 's'.
'og'+'re'+'s'='OGRES'

Can you help me to learn more?

(Other definitions for ogres that I've seen before include "Giants in fairytales" , "Beasts" , "Monstrous giants and man-eaters" , "Fairytale giants" , "'Monsters, fiends (5)'" .)

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