Log on with aim to corrupt country (8)
I believe the answer is:
mongolia
'country' is the definition.
(I know that Mongolia is a country)
'log on with aim to corrupt' is the wordplay.
'with' means one lot of letters go next to another.
'to corrupt' indicates an anagram (a corrupted spelling of the word).
'log'+'on'+'aim'='logonaim'
'logonaim' anagrammed gives 'MONGOLIA'.
(Other definitions for mongolia that I've seen before include "Asian country" , "Log Naomi into the vast region in Asia" , "Log Naomi into the vast Asian region" , "Eastern state" , "Republic of east central Asia" .)