Citrix ADC Vulnerability Actively Exploited. Assume vulnerable systems are compromised.
Updated Citrix Advisory: https://support.citrix.com/article/CTX267027
Exploit Activity Summary: https://isc.sans.edu/forums/diary/Citrix+ADC+Exploits+are+Public+and+Heavily+Used+Attempts+to+Install+Backdoor/25700/
Vulnerablity Scanner: https://github.com/trustedsec/cve-2019-19781/