Nearly 67,000 dead people filed for Social Security benefits between 2006 to 2011, claiming a collective $3.1 billion in income, according to CNBC. How does the government know they're dead? Number one, because no doubt the dead returning to life and seeking out Social Security benefits would probably be easy enough to notice without an audit, and two, they're all people who have listed their dates of birth as before June 16, 1901. Since the current number of people 113 years old and older totals 39 people worldwide, it can be safe to say that it's not zombies that are the issue but a (only slightly) less scary type of monster: the fraudster. The is not a problem likely to go away soon, according to CNBC. Fraudsters are able to do this because the Social Security Administration relies on the Death Master File to detect whether someone is trying to claim a corpse's benefits, but 6.5 million Social Security numbers for people born before June 16, 1901 do not have a date of death on record in the system, without which there's no way of knowing whether someone is a new record holder for world's oldest person, or is just dead, The Inspector General urged the government to find a way to better identify when someone is dead so the living cannot claim their benefits, said CNBC.