Data breaches → CTARS
Was your data in the CTARS breach?
2021 · ctars.com.au · ~12,314 accounts exposedCritical severity · 10/10
CTARS (ctars.com.au) suffered a data breach in 2021 that exposed around 12,314 accounts. If you had an account, some of your personal data may be circulating in leaked databases. The fastest way to know is to check your own email — free, in about 30 seconds, no password required.
What happened
In May 2022, the client management system for the Australian government's NDIS (National Disability Insurance Scheme) suffered a data breach which was subsequently posted to an online hacking forum. The CTARS cloud platform is used by care providers to record information about NDIS participants and often contains sensitive medical information. Impacted data includes over 12k unique email addresses, physical addresses, names, dates of birth, phone numbers and data related to patient conditions and treatments.
Breach details sourced from Have I Been Pwned, the industry-standard breach database. Risk analysis by Nullivo.
What was exposed, and why it matters
Not all breaches carry the same risk — what matters is which fields leaked. Here is what the CTARS breach exposed and what each item actually enables:
Attackers replay leaked passwords across other sites (“credential stuffing”). Because most people reuse passwords, one leak often unlocks email, shopping and banking accounts elsewhere.
Special-category data under UK/EU GDPR. Exposure can lead to discrimination, extortion or targeted harassment, and cannot be undone.
Home addresses feed people-search and data-broker sites, which republish them publicly. They also make phishing far more convincing and, in the worst cases, enable real-world harassment.
Date of birth is a permanent identifier used to verify identity by phone. Combined with a name and address it is often enough to impersonate you.
Enables SIM-swap attacks (hijacking your number to intercept SMS codes), smishing, and voice scams that appear to come from your bank.
Links this leak to your other accounts — a reused username lets anyone build a profile of you across platforms.
Puts you on spam and phishing lists, and confirms to attackers that you hold an account with this service — which makes impersonation emails more believable.
Also listed in this breach: Dates of birth, Email addresses, Genders, Names, Passwords, Personal health data, Phone numbers, Physical addresses, Salutations, Usernames.
What to do if you were affected
These steps are ordered for this specific breach — the most urgent action given what leaked comes first.
- Passwords: Change this password everywhere you have reused it, starting with your email account — whoever controls your email can reset everything else.
- Sensitive personal characteristics: Under UK/EU GDPR you have a strong right to erasure here — exercise it with the service and with any site republishing the data.
- Home addresses: Get your address removed from data brokers — they re-list roughly every four months, so this needs repeating.
- Dates of birth: Never confirm your date of birth to an inbound caller — hang up and dial the organisation back on a published number.
- Phone numbers: Move two-factor authentication off SMS to an authenticator app or passkey, and add a port-out PIN with your mobile provider.
- Check whether your own email appears in this breach — run a free scan to confirm before you spend time on the steps above.
This breach put your details on data-broker sites
Because CTARS exposed sensitive personal characteristics and home addresses, this is one of the breaches that feeds people-search and data-broker sites. Those sites scrape leaked databases, combine them with public records, and republish the result as a searchable profile — which is how a single breach turns into a permanent public listing. Removal works, but brokers typically re-list within about four months, so it has to be repeated.
See our broker-by-broker removal guides →
How urgent is this now?
This data has been circulating for around 5 years, which means it has been copied, combined with other leaks and indexed by search tools many times over.
Passwords are the reason breach age matters less than people expect. Leaked credentials are compiled into wordlists that get tried against new services for years afterwards, so a password exposed here is unsafe to use anywhere, ever again.
Remember: a breach can't be "un-leaked" — once a database is out, it exists in countless copies. The goal is to make the leaked data useless: change what can be changed, lock down what can't, and remove what has been republished.
Frequently asked questions
What data was exposed in the CTARS breach?
The CTARS breach exposed passwords, sensitive personal characteristics, home addresses, dates of birth, phone numbers, names and usernames, email addresses. Attackers replay leaked passwords across other sites (“credential stuffing”). Because most people reuse passwords, one leak often unlocks email, shopping and banking accounts elsewhere.
How many people were affected by the CTARS breach?
Around 12,314 accounts were exposed, making it a smaller, more targeted breach.
What should I do if I had a CTARS account?
Change this password everywhere you have reused it, starting with your email account — whoever controls your email can reset everything else. You can check whether your own email appears in this breach with a free Nullivo scan — no password required.
Breaches that exposed similar data
If the CTARS breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.
- Was your data in the Hakko Corporation breach? (2019, ~9,665 accounts)
- Was your data in the Short Édition breach? (2021, ~505,466 accounts)
- Was your data in the CyberServe breach? (2021, ~1,107,034 accounts)
- Was your data in the University of Nottingham breach? (2026, ~454,635 accounts)
- Was your data in the Sony breach? (2011, ~37,103 accounts)
- Was your data in the Protemps breach? (2021, ~49,591 accounts)