Antinny
Since August 2003, several worms called "Antinny" have spread on the Winny network.
Some versions of Antinny work as follows:
- Upload files from the host computer onto the Winny network.
- Upload screenshots onto an image board.
- Denial-of-service attack to a copyright protecting agency web site.
Some people have uploaded their information unwittingly from their computers because of Antinny. That information includes governmental documents, information about customers, and people's private files. Once the information is uploaded, it is difficult to delete.
Recently, highly publicised cases of sensitive file uploading have come to light in Japan's media. In particular, a defense agency was forced to admit that classified information from the Maritime Self Defence Force was uploaded by a computer with Winny software installed on it.
Following this, All Nippon Airways suffered an embarrassing leak of passwords for security-access areas in 29 airports across Japan. A similar incident occurred with JAL Airlines on 17 December 2005, after a virus originating from Winny affected the computer of a co-pilot.
Arguably the biggest Winny-related leak was that of the Okayama Prefectural Police Force, whose computer leaked data about around 1,500 investigations. This information included sensitive data such as the names of sex crime victims, and is the largest amount of information held by Japanese police to have ever leaked online.
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