If whatever is happening - CEO leaving, quarterly result disappointment and stock plunging to 2 years low, down grade in approvals by analysts was not enough this has come for ADC - one of the main focus area as per Bob.
"Citrix DDOS bug leaves networks vulnerable".
https://searchsecurity.techtarget.com/news/252509388/Citrix-DDOS-bug-leaves-networks-vulnerable