According to Wikipedia:
Disinformation is false or inaccurate information that is spread deliberately. It is synonymous with and sometimes called Black propaganda. It may include the distribution of forged documents, manuscripts, and photographs, or spreading malicious rumors and fabricated intelligence. Disinformation should not be confused with misinformation, information that is unintentionally false. […]
In politics, disinformation is the deliberate attempt to deflect voter support of an opponent, disseminating false statements of innuendo based on the candidates vulnerabilities as revealed by opposition research. In both cases, it also includes the distortion of true information in such a way as to render it useless. […]
Unlike traditional propaganda and Big Lie techniques designed to engage emotional support, disinformation is designed to manipulate the audience at the rational level by either discrediting conflicting information or supporting false conclusions.
There’s a lot of that coming from the UMNO blog, including a so-called Big One. Some 'claimed' they were merely quoting another blog.
The Star Online has published one such case in Fresh twist in Teoh’s death case (Update)
The sinister aim of the disinformaion is to show that the DAP ADUNs in Selangor are corrupt and that Teoh Beng Hock could have been a victim of their corrupt practice.
According to the logic of the disinformation, Teoh must have been murdered for RM2,400 while a certain UMNO person is laughing away in his own RM24 million created ‘Bali Hai’, and I am not referring to the late Deros of Klang,also of UMNO.