Become entangled in network (4)
I believe the answer is:
mesh
I believe this is a double definition.
'become entangled' is the first definition.
(to mesh is to become entangled or connected)
'network' is the second definition.
(I know that network can be written as mesh)
'in' is the link.
(Other definitions for mesh that I've seen before include "Get in harmony with" , "Interlock" , "Engagement" , "Entangle, entwine" , "Knit or weave for Shem" .)