I wish they had said more

From the 9-11 Commission Report:

Footnote 3.8

These prosecutions also had the unintended consequence of alerting some al Qaeda members to the U.S government’s interest in them. In February 1995, the government filed a confidential court document listing Usama Bin Ladin and scores of other people as possible co-conspirators in the New York City landmarks plot. Ali Mohamed, who was on the list, obtained a copy and faxed it to a close Bin Ladin aide for distribution. Statement of Ali Mohamed in support of change of plea, United States v.Ali Mohamed, No. S(7) 98 Cr. 1023 (S.D. N.Y.), Oct. 20, 2000 (transcript p. 29); Statements of Prosecutor and Judge, United States v. Bin Laden, No. S(7) 98 Cr. 1023 (S.D. N.Y.), Mar. 26, 2001 (transcript pp. 3338–3339); Patrick Fitzgerald interview (Jan. 28, 2004).

Exactly how did an AQ operative get a copy of a "confidential court document"?