Crossword Genius

Protection from hackers initially going in hard with us, possibly (9)

Ross

I believe the answer is:

shinguard

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'protection from hackers' is the definition.
I know nothing about this answer so I can't judge whether this works.

'initially going in hard with us possibly' is the wordplay.
'initially' indicates taking the first letters.
'with' means one lot of letters go next to another.
'possibly' indicates anagramming the letters.
The initial letter of 'going' is 'g'.
'g'+'in'+'hard'+'us'='ginhardus'
'ginhardus' with letters rearranged gives 'SHINGUARD'.

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