The most common and most likely answer to this crossword clue is the 10 letter word BROADSIDES
I've seen this crossword clue in The Sunday Telegraph
B
R
O
A
D
S
I
D
E
S
Buddy explains!

The straight part
We know that "Strong attacks" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case strong attacks = broadsides.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BROADSIDES mean?
BROADSIDES noun- One side of a ship above the water line; all the guns on one side of a warship; their simultaneous firing.
- (by extension) A forceful attack, be it written or spoken.
- A large sheet of paper, printed on one side and folded.
- The printed lyrics of a folk song or ballad; a broadsheet.
- To collide with something sideways on