(S (S (NP (NP (BASENP (DT A) (JJ white) (NN paper)) (PP (IN by) (BASENP (NNP Adrienne) (NNP Felt)))) (PRN (COMMA ,) (VP (VBN posted) (PP (IN on) (NP (BASENP (NNP July) (NN 27)) (COMMA ,) (NN 2007)))) (COMMA ,))) (VP (VBD explained) (S (ADJP (JJ step-by-step)) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB use) (NP (BASENP (DT an) (NN exploit)) (S (VP (TO to) (VP (VB hijack) (NP (BASENP (DT a) (NN user) (POS 's)) (NN account))))))))))))) (PERIOD .))