Dictionary:
Cobwebs are complex images that tend to reflect the very complexity of living shown in their design. As a dream symbol, cobwebs also reflect time-distortions. Inspecting the intricate and complicated nature of a cobweb implies great care and time in its construction; however, a web can appear overnight in full detail, as if the spider creating it had time on its side.

Thesaurus:
Synonyms:  Fiber, filament, gossamer, labyrinth, mesh, net, network, snare, tissue, toil, web, webbing

Reasoning:
Most often I.T. network configurations and/or maintenance are completed after hours compared to when spiders come out to complete their work.