RSA enVision is a "security information and event management" (SIEM) platform, with centralised log-management service that claims to "enable organisations to simplify compliance process as well as optimise security-incident management as they occur." On April 4, 2011, EMC purchased NetWitness and added it to the RSA group of products. NetWitness was a packet capture tool aimed at gaining full network visibility to detect security incidents. This tool was re-branded RSA Security Analytics and was a combination of RSA enVIsion and NetWitness as a SIEM tool that did log and packet capture.