It may be a problem for server to secure victory in court umpire's rearranged (8,5)
I believe the answer is:
computer virus
'it may be a problem for server to secure' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'victory in court umpire's rearranged' is the wordplay.
'victory' becomes 'v'.
'in' means one lot of letters goes inside another.
'rearranged' indicates anagramming the letters.
'court'+'umpires'='courtumpires'
'courtumpires' is an anagram of 'computerirus'.
'v' put inside 'computerirus' is 'COMPUTER VIRUS'.
Can you help me to learn more?
(Other definitions for computer virus that I've seen before include "Bug in the system" , "Malicious software" , "Software program capable of causing harm to digital files" .)