In Type 1 diabetes, an inherited form of the disease, the immune system destroys insulin-producing cells.

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Barnaby Jack, a security researcher at McAfee, in April demonstrated a system that could scan for and compromise insulin pumps that communicate wirelessly.

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Once these cells, called islet cells, are destroyed by the immune system, the body has no way of making insulin.

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This is Type 1 diabetes, a disease in which the immune system attacks and kills the cells in the pancreas that produce insulin.

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"On November 1, 2012, officials at the (Veterans Affairs Western New York Healthcare System) reported that while conducting pharmacy inspection rounds on the inpatient units, they discovered that insulin pens intended for individual patient use were found in the supply drawer of the medication carts without a patient label on them, " said the memo, obtained by CNN through the office of U.S. Rep. Brian Higgins, D-New York.

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