When Refrigeration Systems Fail: Why Independent Temperature Monitoring Matters

How can you check the temperature of stored products if a cyberattack disrupts refrigeration controls?

In October 2026, a cyberattack disrupted refrigeration systems at hundreds of French supermarkets, including Intermarché, Coopérative U, and E.Leclerc.

According to AFP, attackers reportedly triggered defrost cycles remotely, causing refrigeration temperatures to rise. Affected stores reported losses of fresh and frozen products.

For cold-storage teams, the question is practical: if refrigeration controls fail, how can you verify the temperature of your stored products?

Monitor Storage Temperatures Independently of Refrigeration Controls

Refrigeration controllers manage settings, compressors, and defrost cycles. The temperature shown on a controller may not reflect conditions throughout a storage area.

A separate temperature measurement helps you check storage conditions without relying only on the refrigeration controller.

In a supermarket cold room, a wireless temperature logger measures and records temperature independently of the refrigeration controller.

How Blulog Protects Monitoring Data

Blulog applies specific safeguards to the transmission, storage, and access of monitoring data.

• One-way RF communication: Loggers transmit measurements to hubs using one-way RF communication and a dedicated measurement frame.
• Encrypted hub-to-cloud transmission: Hubs forward data to the cloud using AES-128 encryption. They store network and system configuration, but no customer or measurement data.
• Device authorization: bluConsole 2.0 authorizes incoming data using unique device keys and accepts only predefined data structures.
• Cloud infrastructure: Blulog’s application and databases run on Google Cloud infrastructure in the EU. HTTPS/TLS protects network communication, AES-256 protects stored data, and private subnets and firewall rules restrict network access.
• Controlled access: Role-based permissions limit access to system features and data. Users are automatically logged out after inactivity, and accounts are locked after repeated failed login attempts. System and access events are recorded in audit logs protected against changes or deletion.
• Backups and recovery: Full database backups run daily, with incremental backups every hour. Restoration procedures are tested periodically.

Questions

Can Blulog detect a cyberattack on refrigeration systems?

No. Blulog does not detect cyberattacks. It measures temperature separately from refrigeration controls and can send an alert when a monitored temperature exceeds a configured limit.

Does Blulog work independently of refrigeration controllers?

Yes. Blulog RF loggers measure temperature independently of refrigeration controllers and send readings to a hub over their own RF connection.