Reading about how much resources these companies are pouring into espionage, it makes me wonder how much Cushing realy has to gain by keeping this information proprietary.
If someone is already getting that information out by flying a helicopter over my installation, I would be tempted to either a) arbitrage the situation by selling the information myself, or b) erect some tents over the tanks if it's really worth keeping it secret.
Many companies that own tank farms, carrier pipelines, and other types of oil transportation / storage infrastructure do exactly this. Production information is extremely valuable, and since producers are not restricted from participating in commodities markets, they often just do the trading themselves.
If someone is already getting that information out by flying a helicopter over my installation, I would be tempted to either a) arbitrage the situation by selling the information myself, or b) erect some tents over the tanks if it's really worth keeping it secret.