Hidden Dangers Lurking in Cellular Connected IoT Devices

What You’ll Learn

 

• Understanding the hidden dangers in cellular-connected IoT devices
• Common misconceptions about IoT device security
• The alarming data on IoT device security breaches
• The business impact of cellular IoT security gaps
• Emerging threats to IoT devices in 2025
• Best practices for securing cellular IoT
• The role of real-time visibility in IoT threat protection
• How Aeris delivers secure cellular IoT

 

The Looming Threat to Cellular IoT Security

 

An imminent threat might be going unnoticed in your remote data and control operation: compromised cellular-connected IoT devices.

 

As more businesses depend on real-time connectivity for tracking, monitoring, and automation, cybercriminals are increasingly targeting the cellular networks that connect to these devices. The result? A growing wave of attacks capable of disrupting critical operations, manipulating data, or even shutting down infrastructure.

 

Common Misconception About IoT Device Security

 

You may be thinking, “My IoT devices are secure enough. No need to worry!”

 

That’s a common perspective until an attack happens. Many organizations still rely on outdated assumptions that traditional IT firewalls or antivirus tools can protect their connected assets. But IoT devices, especially those using cellular connectivity, often operate outside enterprise firewalls and are harder to monitor.

 

Even devices with strong encryption or device authentication can become vulnerable if SIM credentials are stolen, firmware is compromised, or cellular traffic is rerouted through malicious networks. As attackers adopt AI-driven methods and target the cellular layer itself, “secure enough” is no longer sufficient.

 

The Alarming Data on IoT Device Security Breaches

 

The latest research paints a troubling picture. Security attacks on IoT devices surged by 107% in the first half of 2024 compared to the same period in 2023, with the average attack duration now exceeding 52.8 hours per week (SonicWall Mid-Year Cyber Threat Report via Fierce Electronics, 2024).

 

And it’s not just volume, attacks are becoming more complex. Global cyberattacks overall rose 47% in Q1 2025, with organizations facing an average of 1,925 attacks per week, many tied to IoT vulnerabilities (Check Point Research/TechRepublic, 2025).

 

The financial stakes are enormous. The average global cost of a data breach hit $4.88 million in 2024, a 10% increase over the prior year, the highest ever recorded (IBM Cost of a Data Breach Report via SiliconANGLE, 2024).

 

Attackers are increasingly targeting the IoT edge. A Beaming study found that business firewalls encountered more than 161 daily attacks in 2024, many aimed at IoT devices such as cameras, building control systems, and industrial equipment (IoT Insider, 2024). In critical infrastructure, the risks are even higher, Reuters reported a 70% rise in cyberattacks on U.S. utilities in 2024, underscoring how vulnerable IoT-enabled energy and industrial systems have become (Reuters, 2024).

 

The message is clear: cellular IoT devices aren’t just part of your network, they’re now at the center of the global cyber battlefield.

 

Case in Point: Cold Chain Logistics and Other IoT Security Challenges

 

Consider a large cold chain logistics provider using cellular IoT sensors to monitor perishable goods across global supply routes. Each refrigerated truck and container relies on SIM-enabled devices to transmit temperature and location data in real time.

 

Now imagine if even a handful of those devices are compromised through SIM-jacking or an AI-driven DDoS attack. Attackers could manipulate temperature readings, delay alerts, or flood the monitoring system with false data, leading to spoilage, compliance violations, and millions in losses.

 

This isn’t hypothetical. Similar attack patterns have been documented across industrial and utility sectors. The 70% spike in cyber incidents against U.S. utilities in 2024 demonstrates how connected operational systems are becoming prime targets for disruption. As IoT networks scale, every compromised device becomes an entry point, not just to one asset, but to the entire ecosystem.

 

 

The Invisible Vulnerabilities in Cellular IoT Devices

 

The cellular-connected IoT devices you use in your remote data and control operations, like trackers, sensors, routers, monitoring equipment, etc., provide an attack surface for cybercriminals.

 

Here’s the concerning part: you may never even realize when your IoT devices have been compromised. You see, traditional IT security products can’t monitor the cellular behavior of IoT devices. So, if one of your devices contacts suspicious servers or participates in a DDoS attack, your existing IT security systems will not detect it.

 

It’s not your fault, though. IoT device security is an emerging field. Cellular connectivity offers substantial advantages for real-time data transmission. But it also introduces potential attack vectors that didn’t exist previously.

 

Recognizing the Risks of IoT Devices

 

Let’s review a few ways devices can be compromised:

 

• Supply Chain Attacks: Many IoT devices use software from various third-party vendors. If any vendor is compromised, so is your device.
• Insider Risks: Disgruntled employees with device access could misuse SIM cards or intentionally manipulate readings.
• Application Vulnerabilities: The applications interacting with your devices could provide an entry point for attacks.
• Future Exploits: New vulnerabilities in device hardware and open-source software are constantly emerging.

 

The Business Impact of Cellular IoT Security Gaps

 

Once compromised, the business impact could be severe. Attackers could:

 

• Shut Down Operations: Ransomware could render all IoT devices inoperable.
• Manipulate Readings: Spoofed data could lead to inventory loss, regulatory fines, customer litigation and in some use cases, physical harm to humans. Data spoofing can result in analytics used by AI in machine learning can lead Agentic AI to take improper actions. The impact of these improper actions vary widely, with some use cases being more critical than others.
  
  As Syed Zaeem Hosain, Founder and Chief Evangelist at Aeris, put it in a recent article on TMCnet, “Before setting up automation for an IoT device, there must be careful considerations of its implications in the event of a breach. For example, automatically disabling units in a simple data-gathering IoT application, such as sensor data reads, is very different from automatically disabling large numbers of critical devices (e.g. medical units where human lives may be at risk). In the latter scenario, human oversight over automated, Agentic AI-driven actions may be vital to avoid harming people.”
• Attack Infrastructure: Infected devices could be weaponized against you to attack your IT systems.
• Harm Third Parties: Your deployed devices could unknowingly participate in DDoS attacks on others.
• Irreparable Brand Damage: All of the above could devastate your reputation and customer trust.

 

Hosain explains the rising use of Agentic AI in the IoT space: “Agentic AI automation is a logical next phase in AI deployments today in general, not just cybersecurity. Automation, resulting from the deployment of Agentic AI, is the backbone of the cybersecurity space, as it provides rapid responses that are critical in the event of an attack. This is especially true in IoT applications, where the sheer volume of data processed daily can be overwhelming and prone to increased vulnerabilities.”

 

Emerging Threats to IoT Devices in 2025

 

The rapid expansion of IoT ecosystems has created a wider attack surface than ever before, and cybercriminals are evolving just as fast. In 2025, we’re seeing a new generation of security threats that exploit the very technologies enabling IoT innovation, including:

 

SIM-jacking Attacks
As more devices rely on cellular connectivity, attackers are targeting SIM credentials to hijack identities and intercept data. By cloning or swapping SIM profiles in eSIM-enabled devices, bad actors can gain unauthorized access to networks and remotely control connected assets; a nightmare scenario for critical IoT deployments.

 

AI-driven DDoS Attacks
Cybercriminals are now using artificial intelligence to amplify Distributed Denial-of-Service (DDoS) assaults. AI algorithms can analyze network defenses in real time, adjusting traffic patterns to evade detection and overwhelm IoT gateways or cloud endpoints. These smarter, faster attacks can disrupt essential services with unprecedented precision.

 

Supply Chain Compromises
IoT devices often depend on complex, globally distributed supply chains. Infiltrating a single component, such as firmware, chipsets, or embedded software, can introduce vulnerabilities across thousands of devices. Compromised suppliers or counterfeit components can serve as hidden entry points for long-term espionage or sabotage.

 

Firmware and OTA Update Manipulation
Attackers are increasingly targeting over-the-air (OTA) update systems to inject malicious code or block security patches. Without strong encryption and verification, even legitimate updates can become an avenue for attack.

 

Edge and AI Model Exploitation
With more IoT devices running AI models at the edge, hackers are finding ways to corrupt training data or manipulate inference results. The outcome: compromised analytics, false sensor readings, or manipulated automated decisions.

 

Alarming, right? But don’t worry, there are ways to protect yourself, as we’ll discuss next.

 

 

Safeguarding Against Cellular IoT Security Threats

 

Since traditional firewalls and antivirus can’t monitor cellular traffic, how can you secure cellular IoT devices?

 

Best Practices for Securing Cellular IoT

 

As cellular IoT continues to expand across industries, the number of connected devices, and potential attack vectors, grows exponentially. Protecting these devices requires a layered security approach that combines network-level defenses, device hardening, and continuous monitoring. The following best practices help organizations reduce risk, maintain data integrity, and ensure reliable IoT performance across their cellular deployments.

 

There are some standard security best practices for securing cellular IoT that should be followed:

 

• Secure by Design: Incorporate security into IoT devices from the start through careful architecture and coding during a product’s development lifecycle.
• Secure by Default: IoT devices themselves when configured should automatically be secured “out-of-the-box”. The designed security in a given device’s or application’s protections must be enabled from startup.
• Secure by Demand: Customers are now demanding that IoT devices and applications be secure, the face of growing evidence that the attacks on IoT are increasing dramatically.
• Private APN or VPN: Use private Access Point Names for SIM cards to prevent cellular snooping or establish a secure VPN tunnel.
• Network Segmentation: Segment network traffic flows to restrict lateral movement and limit command-and-control. Microsegmentation is used to segment further at application-level traffic.
• Device Authentication: Thoroughly authenticate device identities before allowing network access.
• Firewalls and Gateways: Firewalls and secure gateways act as traffic control points between devices and the network. They block unauthorized access, enforce IP filtering, and segment IoT devices to prevent cross-network attacks. Cellular gateways can also inspect data packets to detect malicious traffic before it reaches your cloud or enterprise systems.
• Threat and Anomaly Detection: Some cellular IoT platforms can monitor device activity, such as data usage, connection frequency, and signal behavior to identify irregular patterns. Sudden spikes in data consumption or communication with unknown endpoints can indicate SIM compromise or malware activity, triggering automatic alerts or isolation.
• Encryption: Encryption safeguards sensitive data as it travels over cellular networks and when stored on devices or cloud servers. End-to-end encryption ensures only authorized endpoints can read the data, while secure key management and encrypted firmware updates protect against tampering or interception.

 

While that helps reduce risks, they don’t fully address the core issue; visibility into cellular behavior. Without monitoring what devices are actually doing on the network, you’ll be unaware of any compromises.

 

The Role of Real-Time Visibility in IoT Threat Protection

 

The most efficient way to gain proper visibility is to instrument the cellular network itself to retain metadata about device connections, destinations, volumes, patterns, etc. Then, this network telemetry can be analyzed using threat intelligence to detect anomalous activity indicating a breach.

 

Combined with the ability to immediately respond to incidents by blocking traffic or quarantining devices, such a solution enables early threat protection and rapid response. This minimizes business impact and prevents small issues from escalating into major problems.

 

 

How Aeris Delivers Secure Cellular IoT

 

Aeris takes a proactive approach to IoT security, combining network intelligence, automation, and decades of cellular IoT expertise. Through Aeris, enterprises gain end-to-end visibility into device behavior, SIM activity, and data flows across global carriers. Threat protection and policy controls help identify anomalies, block unauthorized traffic, and protect devices before issues escalate.

 

With Aeris IoT Watchtower™, security is integrated into every layer of your IoT connectivity. From SIM provisioning to data encryption and anomaly detection, Aeris ensures your connected ecosystem stays secure, compliant, and always online.