Several web pages, mainly with ****ographic or illegal content, are downloading spyware programs onto computers without the consent of the sites' visitors. These web pages are designed to exploit different software vulnerabilities to automatically install malware on systems.
One of these programs is particularly dangerous due to its enticing bait: a sudoku puzzle. The application operates perfectly, allowing users to play the game. However, without the users knowledge, it downloads a spyware, YazzleSudoku, every time the user opens the application.
Once YazzleSudoku is installed on a computer, it creates several Windows registry entries to ensure that it remains active. Similarly, it generates a series of files it needs to operate, with names such as RL_SudokuInstaller.rar.lnk, or Yazzle Sudoku. Then, YazzleSudoku displays advertising messages on screen.
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News Source:
Freshnews 
Panda Software Warns: Sudoku Game Installs Spyware on Computers 
