a method for improved spreading of information in a network is described , together with corresponding methods with the opposite aim , namely to hinder the spreading of harmful information in a network . the harmful information may be a data virus . the first method includes as its characterizing feature to connect at least one node of high eigenvector centrality index in a first region with at least one node of high eigenvector centrality index in a second region . these connections may be made using direct links , or with the help of a new node lying between the nodes to be connected . one method for preventing spreading of information or physical traffic in a network may include as its characterizing feature to inoculate at least one center node by blocking any transmission of unwanted information on all links in / out of said center node . another method for preventing spreading of information or physical traffic may be to inoculate all nodes in a ring of nodes surrounding a center node by blocking any transmission of unwanted information on all links in / out of said nodes . still another method may be to inoculate at least one bridge link connecting two regions by blocking any transmission of unwanted information on said link .