Spreadsheets and AI data leakage: what a pasted or uploaded sheet gives away in ChatGPT or Claude.

Customers, suppliers, wages, the ATO balance and the reviewer’s comments, in the workbook opened every quarter.

Related-party loans, rent, contractor fees, bank facilities and the reviewer’s notes, on a grid that looks like arithmetic.

Customers, wages, lenders, personal guarantees and the firm’s advice on a covenant breach, in the notes column.

Property, accounts, shares and super, with a column of internal notes about a daughter who may contest. An estate on one sheet.

Matters, fee earners, narrations, write-down notes, a deal under NDA and the identity checks, in one month-end export.

Ages, balances to the dollar, a redundancy, a health scenario, the drawdown and the Age Pension estimate. A couple’s future, in a grid.

Every client in one grid: dates of birth, tax file number digits, the fee, the risk profile and what the adviser wrote about each of them.

Every client’s open claims, reserves, injuries and insurer positions in one grid, with the brokerage’s own notes beside them.

Serial numbers, rooms, sums insured and where the keys are kept, in the grid prepared for every renewal.

Staff and agency names, leave, screening dates, a worker stood down and which resident needs which staff member. A week on Wattle wing.

Accommodation payments, daily fees, refunds owing to estates, a bank account and who may be phoned. A finance register, one row per resident.

Net income, shaded overtime, living expenses, every card limit and a surplus of a few hundred dollars. How close a family is to its limit.

Every client with a loan amount and lender, the commission rates, trail income and the date each clawback ends. The brokerage’s book of business.

Names against birth dates, mobiles, item numbers, condition codes and notes. A whole patient list, one row each.

Every patient with diabetes, their results, who smokes and who has not been back. One row each.

Every overdue patient, their phone number, the treatment they still need and the notes staff added. A health record in table form.

Every dollar that moves at settlement, the lender, the payout figure and the vendor’s account, in one grid.

Several clients’ names, matters and balances, the trust bank account and the notes that explain why money is still held.

Eight clients, their birth dates, employers, partners, visa deadlines, a refusal and a spouse in treatment. A whole caseload in one file.

Every tenant, every arrear, every owner and the bank account the rent is paid into. One row per property.

Names and mobiles against budgets, finance status and notes about separations, illness and family money.

Names, NDIS numbers, the support each person receives, hours, and a status column that says which shifts are under question.

Who lives alone, where, when a worker is there, the notes for each person and the lockbox code. A map of the week.

Seven candidates side by side: pay, notice, visa, rating and the remarks column nobody was meant to read.

Market bands beside named employees’ real salaries, the agency’s fee per role and a note about who might leave.