Letters and AI data leakage: what a pasted letter gives away in ChatGPT or Claude.

Identity, figures, bank details, a tax file number and the firm’s own advice, in one routine letter.

Income, entities, existing debts and the firm’s own representation, addressed to a bank in the firm’s name.

Client, facts, opponent, prospects and strategy. Privileged advice, in the document privilege was made for.

The debtor, a director’s personal guarantee, the invoices and an internal note on what the client will accept.

A named worker, an allegation, a compensation claim, a union delegate and the amount the client will pay to end it.

The questions put to the expert, a gap in the client’s own inspection records and documents produced on subpoena.

Balances, performance, fees, what changed and what comes next. A year of a client’s financial life, in a letter written to be warm.

The allegation, the advice history, the file notes relied on, the licensee’s position and the offer, in a letter AFCA may read next.

Sums insured, premiums, the claims history, the risk address, the security and the advice. The client’s whole risk picture, written in a hurry.

The home, its contents, an investment property, the cars, the family, the prior claims and the recommendation. A household’s insurable life.

The allegation, the policy wording, the broker’s file, the insurer’s position and the offer, in a letter AFCA may read next.

The insurer’s reasons, the client’s weakest facts, lost income and the demand, in a letter written under pressure.

The trust, the property, the premium, the claims history and the client’s reasons for leaving its old broker.

Diagnoses, medications, the advance care directive and the next of kin, compressed onto one page for the ambulance.

The allegations, the care, the staff involved, the investigation and the admissions, in a letter the Commission may read next.

The allegation, the chronology, a quote from the call recording, a partial admission and the remedy, in a letter AFCA may read next.

Identity, symptoms, history, medications, results and a bereavement. A patient’s whole clinical picture, in one page.

The patient, a missed follow-up, the findings, the fixes, the indemnity notice and where to complain next. A bad week, in writing.

Five days off, an employer’s demand for a diagnosis, and a miscarriage the patient told no one about.

A car accident claim, a signed authority and a record that holds far more than the claim needs.

The history of a failing tooth, diabetes and osteoporosis, enclosed X-rays and a patient who cannot afford an implant.

A patient’s complaint about a fee, her clinical background, her job loss, a staff member’s words and the practice’s offer.

The lender, the payout figure, the vendor’s bank account and a request to send the proceeds somewhere else.

The client’s grievance, the staff member who erred, the refund and what the practice is changing.

The hours billed, the estimate that was exceeded, the practice’s own admission and the date the client’s visa ends. A letter written to settle a dispute.

The complaint, the agency’s admission, the staff action, the tenant’s arrears and safety and the remedy.

A missed shift, a disputed charge, a late call to a mother and a confidence her son asked the service to keep. Four findings in one letter.

The package, a sign-on payment that reveals her current bonus, a police check condition and a note about the agency’s fee.