A new report from cloud-native network detection and response company ExtraHop shows that on the fourth anniversary of the WannaCry attack a high percentage of IT environments are still running known vulnerabilities. It shows the continuing use of ill-advised and insecure protocols, including Server Message Block version one (SMBv1), which was exploited by the WannaCry ransomware variant to encrypt nearly a quarter of a million machines worldwide, and is still found in 67 percent of environments.

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