Computer worms that have brought down systems around the world in recent days are starting to attack each other, Finnish software security firm F-Secure (FSC1V.HE) said on Wednesday. “We seem to have a botwar on our hands,” said Mikko Hypponen, chief research officer at F-Secure. “There appear to be three different virus-writing gangs turning out new worms at an alarming rate, as if they were competing to build the biggest network of infected machines.”Full Story