Data breach notification, Kerrawong Family Clinic, lost laptop

Data breach notification letter template that tells people what to do next

A data breach notification letter has to tell each affected person what happened, exactly which of their information was involved, what the organisation has done, and what they should do now, in plain words they can act on. This two page letter from a regional clinic after a laptop holding 1,240 patients' details was lost on a train covers all four.

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Kerrawong Family Clinic
ABN 27 551 093 846 ยท Kerrawong NSW 2830
Kerrawong Family Clinic, data breach notificationPage 1 of 2
Kerrawong Family Clinic, data breach notificationPage 2 of 2

Tuesday 6 October 2026
Private and confidential
Ms Joanne Halloran, 22 Wirraway Street, Kerrawong NSW 2830

Your personal information was on a laptop we have lost

Dear Ms Halloran, I am writing to tell you about a data breach at our clinic that involves your personal information, what we have done about it, and what we recommend you do. We are sorry this has happened.

1
What happened
On the evening of Thursday 24 September 2026, a staff member left a clinic laptop on a train. It was reported to the rail operator and to police the next morning and has not been found. The laptop needed a password to open, but its drive was not encrypted. It held a spreadsheet of 1,240 patients booked for our skin check program in 2025 and 2026, and you are one of them.
2
The information involved
For you, the spreadsheet held the following:
Information
Involved
Note
Name, date of birth, mobile number
Yes
As on your file
Medicare card number
Yes
Without the card expiry date
Appointment dates and reason
Yes
Recorded as skin check
Clinical notes and results
No
Held only in our records system
Bank or card details
No
Never stored on that laptop
3
What we have done
We changed every password the laptop could reach on 25 September and set it to erase itself if it connects to the internet. We notified the Office of the Australian Information Commissioner on 2 October. Every clinic device is now encrypted, and patient lists can no longer be saved outside our records system.
4
What we recommend you do
The main risk is a scam call, text or email that uses your details to sound like us. Please take these steps:
Be wary of anyone who quotes your appointment or Medicare number. We will never ask you for a payment, password or card number by phone, text or email.
If a call claims to be from the clinic and you are unsure, hang up and ring us back on the number below.
Check your Medicare claims history in your Medicare online account, and contact Services Australia about any claim you do not recognise.
Report a scam attempt to Scamwatch, and tell us about it so we can warn other patients.
5
Contact us
Our privacy officer, Dr Anil Raman, has set up a dedicated line, 02 5550 4720, open 9 am to 5 pm weekdays until 30 October, and you can email privacy@kerrawongclinic.example at any time. If you are not satisfied with our response, you can complain to the Office of the Australian Information Commissioner.

Yours sincerely,

For Kerrawong Family Clinic
Name
:
Dr Grace Ellery, Practice Principal
Date
:

Section by section

What each section is for, so you can keep the ones you need and drop the rest.

Letterhead and addressee
Clinic ledger letterhead with ABN, the date, private and confidential, and the patient.
Subject and opening
A plain statement that the patient's information was on a lost laptop, and an apology.
1. What happened
Laptop lost on a train on 24 September, not encrypted, 1,240 patients affected.
2. The information involved
A table of what was and was not on the laptop.
3. What we have done
Passwords changed, remote wipe set, OAIC notified 2 October, devices encrypted.
4. What we recommend you do
Four steps against scams and to check Medicare claims.
5. Contact us
Privacy officer, dedicated line and email, and the right to complain to the OAIC.
Sign off
The practice principal's signature block.

How to adapt this document

First, for an email compromise rather than a lost device, replace section 1 with when the account was accessed and for how long, and say whether emails were read or only possibly read, because that changes the risk. Second, if passwords or card numbers were involved, move the change your password and contact your bank steps to the top of section 4. Third, for a breach at a supplier, name the supplier in section 1 and say what the clinic has required of them, since readers will ask why their data was there.

Which law the terms follow

The letter follows Part IIIC of the Privacy Act 1988, the Notifiable Data Breaches scheme, which applies to private health service providers whatever their turnover. The statement given to individuals must include the entity's details, a description of the breach, the kinds of information involved and recommended steps. The OAIC administers the scheme, receives the statement and handles complaints. State public health services may also be covered by their state's privacy or health records law.

What makes this document work

The table shows what was not lost, too

Five rows say Yes or No: name, date of birth and mobile, Medicare number, and appointment reason were on the laptop; clinical notes and bank details were not. Telling patients what is safe matters as much as what is not, because it stops a reasonable worry turning into a flood of calls.

The advice matches the actual risk

With names, numbers and Medicare details exposed, the realistic harm is a scam call that sounds like the clinic. Section 4 says so in its first sentence, then gives four steps: be wary of anyone quoting those details, ring the clinic back on a known number, check Medicare claims, and report scams.

It owns the cause

Section 1 says plainly that the drive was not encrypted, and section 3 says every device is now encrypted and lists cannot be saved outside the records system. A letter that names its own failure and its fix is believed; one that blames a thief alone invites a complaint to the regulator.

Questions people ask

When does an Australian organisation have to notify a data breach?

Under the Notifiable Data Breaches scheme in the Privacy Act 1988, when a breach is likely to result in serious harm to someone whose personal information is involved and the harm cannot be prevented by remedial action. Health information, as here, makes serious harm more likely. The organisation must notify affected people and the OAIC.

What must a data breach notification include?

The organisation's identity and contact details, a description of the breach, the kinds of information involved, and recommendations about the steps people should take in response. This letter covers each in its own numbered section, then adds what the clinic has done and how to complain, which the scheme does not require but readers expect.

How quickly must the breach be assessed?

An organisation that suspects an eligible data breach must take reasonable steps to assess it within 30 days, and once it believes one has occurred, notify as soon as practicable. Here the laptop was lost on 24 September, the OAIC was notified on 2 October, and patients were written to on 6 October.

Should the letter apologise?

Yes, briefly and early, as this one does in its first paragraph. An apology is not an admission of every possible claim, and its absence reads as indifference. Keep it to one sentence and move straight to facts and actions, which are what readers need from the rest of the letter.

Can the notice be an email instead of a letter?

Yes. The scheme lets organisations notify people in the way they normally communicate with them, such as email, text or post. A clinic with up to date mobile numbers might send a short text pointing to this letter. Where contacting everyone directly is not practicable, the organisation publishes the statement instead.

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