United Airlines said cockpit access information was accidentally leaked over the weekend and it was "working to resolve this issue as soon as possible."
The info included codes for opening and closing cockpit doors that were fortified and secured following the 9/11 hijackings, reported CBS News, and the data wasn't hacked or involved in the weekend global cyber ransomware attack.
The airline assured the public on Saturday that it has things in place to keep cockpits secure, said NBC News.
It wasn't clear how the information was leaked, but a spokesperson for the airline said "it was not a breach."
The airline alerted its employees of the leak in a "safety alert" email, saying that security procedures "may have been compromised," said CBS News.
The email said "the risk of a breach of the flight deck door is strongly mitigated by carefully following the flight deck security procedures," adding that employees should "remember this information is sensitive security information and sharing this with anyone not authorized or who does not have a need to know is strictly prohibited."
One pilot told CBS News that the airline will likely need to change the door codes, which will have to be done manually on each plane.
"The safety of our customers and crew is our top priority and United utilizes a number of measures to keep our flight decks secure beyond door access information. In the interim this protocol ensures our cockpits remain secure," United Airlines spokesperson Maddie King said in a statement.
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