For the second time in weeks, a major botnet has been decapitated — but this time investigators have arrested the alleged operators of the criminal network. Mariposa was a massive global botnet with close to 13 million infected machines in more than 190 countries. The botnet harvested banking credentials, credit card information, account information from social networking sites and online email services. The head botmaster, nicknamed “Netkairo,” and his partners, “Ostiator” and “Johnyloleante,” all of whom were arrested.”]