What does the cryptic crossword clue "Take apart bad dossier making fierce attacks (10)" mean?

The definition is "attacks". The wordplay uses an anagram. anagram of BAD + DOSSIER = BROADSIDES; definition: "attacks" The answer is BROADSIDES.

Take apart bad dossier making fierce attacks (10)

Daily Mail Cryptic #17441 | 25 Across | 2024-09-09 flower