Data breaches → Giant Tiger
Was your data in the Giant Tiger breach?
2024 · gianttiger.com · ~2,842,669 accounts exposedCritical severity · 8/10
Giant Tiger (gianttiger.com) suffered a data breach in 2024 that exposed around 2,842,669 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 March 2024, Canadian discount store Giant Tiger suffered a data breach that exposed 2.8M customer records. Attributed to a vendor of the retailer, the breach included physical and email addresses, names and phone numbers.
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 Giant Tiger breach exposed and what each item actually enables:
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.
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.
What to do if you were affected
These steps are ordered for this specific breach — the most urgent action given what leaked comes first.
- Home addresses: Get your address removed from data brokers — they re-list roughly every four months, so this needs repeating.
- Phone numbers: Move two-factor authentication off SMS to an authenticator app or passkey, and add a port-out PIN with your mobile provider.
- Names and usernames: Search your usual username to see what else it exposes, and use distinct handles for sensitive accounts.
- Email addresses: Treat any message referencing this service with suspicion, and never act on links in unexpected emails.
- 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 Giant Tiger exposed 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 2 years, which means it has been copied, combined with other leaks and indexed by search tools many times over.
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 Giant Tiger breach?
The Giant Tiger breach exposed home addresses, phone numbers, names and usernames, email addresses. 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.
How many people were affected by the Giant Tiger breach?
Around 2,842,669 accounts were exposed, making it a large breach.
What should I do if I had a Giant Tiger account?
Get your address removed from data brokers — they re-list roughly every four months, so this needs repeating. 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 Giant Tiger breach affected you, these breaches exposed comparable information — worth checking too, since leaked datasets are routinely combined.
- Was your data in the LuLu breach? (2024, ~2,796,835 accounts)
- Was your data in the Sport 2000 breach? (2024, ~3,189,643 accounts)
- Was your data in the Piping Rock breach? (2024, ~2,103,100 accounts)
- Was your data in the Boulanger breach? (2024, ~2,077,078 accounts)
- Was your data in the SurveyLama breach? (2024, ~4,426,879 accounts)
- Was your data in the Lookiero breach? (2024, ~4,981,760 accounts)