Seventy-three percent of companies are using vulnerable, end-of-life networking equipment, up from 60 percent last year. That puts those companies at higher risk of security breaches, network outages and higher replacement costs. The report also showed that 23 percent of networking devices are no longer being sold. The security risk of any one particular device can vary greatly, based on where it is being used and how it is configured, the report says. Companies may not even be aware that some of their equipment is past its due date.”]