[Gobiner]

That very observation is included in the "Key Judgements" section.

"The Wikileaks.org Web site could be used to post fabricated information, misinformation, disinformation, or propaganda and could be used in perception management and influence operations to convey a positive or negative message to specific target audiences that view or retrieve information from the Web site."

[GHFigs]

In context, that appears to be more of a concern that such tactics could be used against the US. In the "Intelligence Gaps" section, for instance:

"Will the Wikileaks.org Web site be used by FISS, foreign military services, or foreign terrorist groups to spread propaganda, misinformation, or disinformation or to conduct perception or influence operations to discredit the US Army?"

Similarly, although there is mention that Wikileaks could potentially be hacked to find information about the identity of the leakers, in the context of this report they seem more concerned that others will do this to identify potential sources:

"Will foreign entities attempt to conduct CNE or CNA to obtain information on the posters of information or block content on the Wikileaks.org Web site?"