Won't stop them from trying.
About 10 years ago,cable modems across Ontario (Canada) were knocked off the AtHome network. Thieves dug up and cut the fibre thinking it was copper, then tried again with the backup.
"And do you think (fop that I am) that I could be the Scarlet Pumpernickel?" -- Looney Tunes, The Scarlet Pumpernickel (1950, Chuck Jones)