Mickeycaskill writes: IBM says Tor is increasingly being used to scan organizations for flaws and launch DDoS, ransomware and other attacks. Tor, which provides anonymity by obscuring the real point of origin of Internet communications, was in part created by the US government, which helps fund its ongoing development, due to the fact that some of its operations rely on the network. However, the network is also widely used for criminal purposes. A report by the IBM says administrators should block access to Tor , noting a "steady increase" an attacks originating from Tor exit nodes, with attackers increasingly using Tor to disguise botnet traffic. "Spikes in Tor traffic can be directly tied to the activities of malicious botnets that either reside within the Tor network or use the Tor network as transport for their traffic," said IBM. "Allowing access between corporate networks and stealth networks can open the corporation to the risk of theft or compromise, and to legal liability in some cases and jurisdictions."