Disinformation is basically distort or manipulate the information so that the recipient end believing something completely untrue, and which the originator obtains an advantage. Usually we see on the pages scareware rate spread malware (also known as rogue), where we find pictures of certifications such as Virus Bulletin and AV-Comparatives. Another alternative is focusing its efforts on trying to prove that this “solution” (scareware) is the best. This is done through false compare where it gets questioned the detection levels of antivirus companies widely known in the market.”]
Source: http://malwareint.blogspot.com/2009/12/disinformation-campaign-to-spread.html