Any subsequent alterations to the data can be readily detected.
( ( ( Any ( subsequent alterations ) ) ( to ( the data ) ) ) ( ( can ( be ( readily detected ) ) ) . ) )
(ROOT (S (NP (NP (DT Any) (JJ subsequent) (NNS alterations)) (PP (TO to) (NP (DT the) (NNS data)))) (VP (MD can) (VP (VB be) (VP (ADVP (RB readily)) (VBN detected)))) (. .)))
Changes to the data can't be detected.
( ( Changes ( to ( the data ) ) ) ( ( ( ca n't ) ( be detected ) ) . ) )
(ROOT (S (NP (NP (NNS Changes)) (PP (TO to) (NP (DT the) (NNS data)))) (VP (MD ca) (RB n't) (VP (VB be) (VP (VBN detected)))) (. .)))