Smart Laundry Machines Security Bug?

Yes, security researchers have demonstrated that some commercial connected laundry machines have had vulnerabilities that could allow remote control, data theft, or ransomware attacks. These flaws are not universal, but they highlight real risks in the Internet of Things (IoT) devices used in apartment buildings, laundromats, and universities. This article explains what the bugs are, how they work, what you can do to protect yourself, and how to choose a safer machine.

What Are the Known Vulnerabilities?

In 2023, a security researcher found a serious flaw in a popular commercial laundry machine’s Wi-Fi module. The vulnerability allowed an attacker on the same network to send commands to the machine, potentially starting or stopping cycles, locking the door, or even displaying a ransom note on the screen. The issue was fixed with a firmware update after the researcher reported it responsibly. Other researchers have found similar issues in different brands, such as unencrypted communication between the machine and the vendor’s cloud server, which could let an attacker intercept data like payment information or usage logs.

How Do These Attacks Work?

Most commercial laundry machines connect to the internet via Wi-Fi or Ethernet to allow remote monitoring, payment processing, and firmware updates. Attackers typically exploit one of three entry points:

• Network exposure: If the machine is on a network that is also accessible to customers (common in laundromats and dorms), an attacker can scan for open ports and try to connect directly.
• Weak authentication: Some machines have default passwords or no authentication at all for their web-based management interfaces.
• Insecure cloud communication: If the machine sends data to the vendor’s server without proper encryption, an attacker on the same network can eavesdrop or even inject commands.

Once an attacker gains control, they can potentially unlock the door mid-cycle (a safety hazard), change pricing, or hold the machine for ransom by locking it until a payment is made.

Real-World Incidents and Impact

While there have been no widely reported mass attacks on laundry machines, the potential impact is significant. In 2022, a security researcher demonstrated how to hack a popular model and lock it, showing that a ransomware attack on a laundromat could be financially damaging. More common are cases where attackers steal payment card data from machines that accept credit cards, because the machines may not encrypt card data properly. For building managers, a single compromised machine can disrupt laundry service for all residents, leading to complaints and lost revenue.

How to Protect Yourself as a User

If you use a commercial laundry machine, you can take a few precautions:

• Use a credit card or a dedicated laundry card instead of a debit card, as credit cards offer better fraud protection.
• Check if the machine’s payment system uses end-to-end encryption (look for a secure payment icon or ask the manager).
• If you notice the machine behaving oddly (e.g., starting by itself, displaying strange messages), report it to the facility manager immediately.
• Do not connect your phone to the machine’s Wi-Fi network if it is not a secure, password-protected network.

What Facility Managers Should Do

If you manage a building or laundromat with connected laundry machines, you are responsible for their security. Here are the steps to reduce risk:

1. Change all default passwords on the machines and their network interfaces.
2. Keep the machines’ firmware updated. Check the vendor’s website or contact them for the latest patches.
3. Put the machines on a separate, isolated network (VLAN) that does not have access to other building systems or customer devices.
4. Disable any remote management features that are not absolutely necessary.
5. Regularly audit the machines for unauthorized changes or unusual network traffic.

How to Choose a Secure Machine

When purchasing new commercial laundry equipment, ask the vendor about security features. Look for machines that:

• Support secure boot and signed firmware updates (so only the vendor can install new software).
• Use encryption for all communication (HTTPS/TLS) and have a secure payment processing system.
• Offer role-based access control, so only authorized staff can change settings.
• Have a clear security disclosure policy and a history of releasing patches quickly.

Common Misconceptions

One common misconception is that if a machine is not connected to the internet, it is safe. While that is true for remote attacks, many machines still have a local Wi-Fi or Bluetooth interface for maintenance, which can be exploited if an attacker is within range. Another misconception is that only large corporations are targeted. In reality, small laundromats are often easier targets because they have less IT support and may not update firmware.

Frequently Asked Questions

Can a hacker really control a washing machine? Yes, if the machine has a vulnerable network interface and the attacker can reach it. They could start or stop cycles, change settings, or lock the door, though physical access to the machine is usually needed for the latter.

Should I stop using connected laundry machines? No, but you should be aware of the risks. Most machines are safe if properly configured and updated. Still, it’s wise to use secure payment methods and report any suspicious behavior.

How do I know if my laundry machine has been hacked? Signs include the machine starting or stopping on its own, displaying error messages that you didn’t trigger, or the screen showing a ransom note. If you suspect a hack, unplug the machine (if possible) and contact the facility manager.

Are there any standards for IoT security in laundry machines? Some industry groups and government agencies have published guidelines, such as the NIST IoT security guidelines, but they are voluntary. When buying, ask if the machine complies with any recognized security standard.

What should I do if I find a vulnerability? If you are a security researcher, report it to the vendor through their responsible disclosure process. If you are a user, report it to the manufacturer and the facility manager. Do not exploit it further.

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