Cyber-criminals who hacked the FBI accidental they person highly delicate aesculapian information for thousands of its peculiar agents.
BBC News has seen samples of the stolen "fitness-for-work" aesculapian examinations, which incorporate accusation specified arsenic humor and urine trial results, and doctors' notes mentioning conditions specified arsenic a "shellfish and banana allergy".
The records see agents' afloat names and addresses, arsenic good arsenic references to aesculapian concerns including 'blood successful the urine' and 'high cholesterol'.
Experts accidental the hack - which the FBI is investigating - could permission agents susceptible to scams, blackmail and targeted attacks, arsenic good arsenic assistance criminals impersonate instrumentality enforcement officers.
"The database maps thousands of agents against their aesculapian and fittingness records," said Etay Maor, vice-president of menace quality astatine Cato Networks.
"Passwords tin beryllium reset if stolen, but aesculapian records cannot, truthful erstwhile this information is out, it stays compromised for good. That permanence, applied crossed an full workforce, is what makes this leak truthful serious."
The FBI has not responded to requests for comment. However, connected Wednesday it acknowledged the breach and said it was "aggressively investigating" however it happened.
The cyber-criminal radical ShinyHunters claims it breached FBI systems connected Monday, and aboriginal posted details of the onslaught connected its darknet site.
The radical besides shared samples of the alleged stolen information with reporters, on with an extortion demand.
Unusually, the hackers are not demanding money. Instead, they are seeking a retraction of an FBI advisory published successful May, which they assertion "offended" them.
The samples shared with journalists look genuine and see names, addresses, telephone numbers, badge numbers, occupation titles and accusation astir spouses.
The records look to subordinate to thousands of agents, including elder officials specified arsenic lawman directors.
Professor Ciaran Martin, the erstwhile caput of the UK's National Cyber Security Centre, has described the hack - if confirmed - "as superior arsenic it gets erstwhile it comes to information breaches."
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