Mydoom.J was found in the wild on April 20th, 2004. This virus is still under analysis, but it seems to recycle code from earlier Mydoom variants as well as some parts from Bugbear. For more details, please see Mydoom.G
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.