FireEye Finds Mitigation of CVE-2019-19781 Comes With a Price. One threat actor is taking advantage of the current problems with Citrix ADC/Netscaler for their own advantage. NotROBIN is a utility written in Go 1.10 and compiled to a 64-bit ELF binary for BSD systems. The actor may be quietly collecting access to NetScaler devices for a subsequent campaign, says FireEye. The mitigation works by deleting the exploit code found within these. templates before it can be invoked.”]