medium severity June 20, 2023 · 3 min read

Dymocks Data Breach (2023)

If you are a customer of Dymocks, here’s what’s now in circulation.

In September 2023, the Australian book retailer Dymocks announced a data breach. The data dated back to June 2023 and contained 1.2M records with 836k unique email addresses. The breach also exposed names, dates of birth, genders, phone numbers and physical addresses.

On June 20, 2023, Australian bookstore chain Dymocks appeared in a breach notification on Have I Been Pwned, confirming that attackers had accessed customer records containing 836,000 unique email addresses along with names, dates of birth, genders, phone numbers, and physical addresses. The compromised data originated from an incident that occurred in June 2023, with the company later notifying affected individuals and regulators in September 2023. Anyone who has shopped at Dymocks, created an account, or made an online purchase in recent years may be among those exposed.

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Reported Details from the Disclosure

The primary listing on Have I Been Pwned states that 1.2 million records were involved, ultimately resolving to 836,000 unique customers. Exposed information includes full names, email addresses, dates of birth, genders, phone numbers, and physical addresses. The disclosure does not specify the initial attack vector, whether the data was encrypted, or if a ransomware group claimed responsibility. It also does not detail whether payment card information was taken, leaving that question open despite the scale of the breach.

Dymocks confirmed the June 2023 compromise in its official notifications, indicating the data was obtained by unauthorised parties. No exact timeline between initial intrusion and discovery has been made public, which is common in incidents where forensic details remain limited.

Why This Matters for You and Your Family

When your name, date of birth, phone number, email address, gender, and home address all land in one convenient package, the risk moves beyond simple spam. Fraudsters can combine these details to impersonate you when contacting banks, mobile providers, or government agencies. For families, a single exposed parent record often links to children through shared addresses and phone numbers, increasing household exposure. The breach of 836,000 unique email addresses means hundreds of thousands of Australian households now face elevated identity fraud risk that can persist for years.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Severity Medium

Disclosed June 20, 2023

Last reviewed July 22, 2026

Affected 836K

Data exposed Dates of birthEmail addressesGendersNamesPhone numbersPhysical addresses

By GalaxyWarden Threat Research · Editorial & sourcing standards

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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