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Three thousand eight hundred was an account number

Three thousand eight hundred is an account number with no name next to it. Thirty-five thousand is the staff book.

Mirae Asset Securities said today that two boxes were reached a day apart. 4 November: the mobile-web login that uses a phone as the second factor. About 3,800 customer account numbers. Holder name and the rest of the row, they say, did not leave. 5 November: groupware. 35,255 current staff, leavers, contractors. Mostly name and employee ID. Some of those also have mail, mobile, a hashed password. Resident numbers, passports, licences, alien-registration numbers, they say, are out. No malware, no outage. No cash missing as of this afternoon. They told the commission, the supervisor and the privacy board. The site still runs.

Do not add 3,800 to 35,255 as one kind of person. One file is a number that opens a brokerage row if you already know who owns it. The other is a desk. Sister companies already had their own letters this month. Those are not this count.

A call that already knows the account number and asks for the OTP is the next page if it is. They said not to give one.

What 3,800 will be asked to cover

It will be briefed as 39,000 customer accounts emptied. It is 3,800 numbers and a separate 35,255 staff file. It will be briefed as every Korean brokerage. The FSC’s month-to-date 470,000 across 37 firms is a different sentence. Do not paste it onto this login.

If you are in the 3,800, the number is the incident. If you are in the 35,255, the mail and the hash are. Change the password you also used on the groupware. A still-green MAPS app is evidence about today’s book. It is not a finding that the account number came back.

Three thousand eight hundred is an account number. Keep the holder’s name out of that sentence.

Cite: Fabio Correia, “Three thousand eight hundred was an account number”, 2026-11-07. https://www.fabiocti.com/notes/three-thousand-eight-hundred-was-an-account-number/. Markdown: https://www.fabiocti.com/notes/three-thousand-eight-hundred-was-an-account-number.md

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