Witch reprogrammed the scanners (11)
I believe the answer is:
enchantress
'witch' is the definition.
(synonyms)
'reprogrammed the scanners' is the wordplay.
'the scanners' anagrams to 'ENCHANTRESS'.
However, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for enchantress that I've seen before include "Female magician" , "One casting spells" , "Seducer" , "Circe, for example" , "Siren" .)