The BIG M POS Breach Means Someone Could Access Your Business Accounts

HEROIC analysts detected a database breach affecting BIG M POS, an Australian online point-of-sale platform built for the repair industry. The incident was recorded on March 23, 2025, and exposed data from 308 user accounts. While the record count is relatively small, the dataset includes bcrypt-hashed passwords alongside full contact details, making each record a direct avenue for account compromise.

The BIG M POS Breach Could Mean Someone Is Already Logged Into Your Account

When a breach includes password hashes, the risk is not theoretical. Attackers take the hash and run it through automated cracking tools that test millions of common passwords per second. If the password tied to your BIG M POS account was short, simple, or recycled from somewhere else, it may already have been reversed. That cracked password is then tested across email providers, banking portals, and other services associated with the same address. The result is a quiet account takeover that can go unnoticed for weeks while someone drains loyalty points, diverts payments, or harvests more data from your inbox.

What Was Exposed in the BIG M POS Breach

• Email Address
• Phone Number
• Password Hash (bcrypt)
• First Name
• Last Name

Why This Matters for Businesses and Their Customers

BIG M POS serves repair businesses, meaning the accounts in this breach likely belong to shop owners, technicians, and business operators. When a business owner's credentials are stolen, the consequences extend beyond the individual. Attackers can pivot into the business platform, access client records stored there, intercept invoices, or impersonate the business to its customers. The email addresses and phone numbers in this dataset also enable targeted phising campaigns crafted to look like they come from a platform the victim genuinely uses for their work.

How a Database Breach Works

Database breaches against SaaS platforms like BIG M POS often begin through vulnerabilities in the web application layer. Attackers may exploit a flaw in how the application handles user input, allowing them to send specially crafted queries directly to the underlying database. Alternatively, administrative accounts with weak or reused passwords become entry points after those credentials are obtained from unrelated breaches. Once access is gained, an attacker can copy the entire user table in seconds and walk out without triggering any obvious alerts. The stolen data then travels to dark web markets where it is bought by others who specialize in monetizing credentials.

Check If You Are Affected by the BIG M POS Breach

If you have ever created an account with BIG M POS or used its platform for your repair business, your credentials and contact details may be in this dataset. HEROIC's free breach scanner searches more than 400 billion compromised records to show you everywhere your email address has surfaced. Check now, change the password you used on BIG M POS immediately, and make sure that same password is not protecting any other account you care about.