In today’s interconnected world, almost every piece of equipment in a modern office or home is “smart”. From the climate control system and the coffee machine to the security cameras monitoring your front door, these devices offer immense convenience and efficiency. However, as our reliance on the Internet of Things (IoT) grows, so does a significant and often overlooked security risk.
Recent global events have highlighted just how vulnerable these devices can be. In late 2025, a massive hacking campaign in South Korea saw over 120,000 internet-connected cameras in homes and businesses compromised. The attackers exploited basic security oversights to gain live access to private feeds, which were then used for malicious and exploitative purposes. This incident serves as a stark reminder that if a device is connected to the internet, it is a potential doorway for a cybercriminal.
Why Are Connected Devices So Vulnerable?
Many users view a smart camera or a connected thermostat as a simple appliance rather than what it truly is: a small, specialised computer. Because they are often designed for ease of use rather than high-end security, they frequently lack the robust protections found on a standard laptop or server.
There are several common reasons why these devices become weak points:
- Default Credentials: Many devices are shipped with a standard username and password (like “admin” and “1234”). If these are not changed immediately upon setup, an attacker can gain access in seconds using automated tools.
- Infrequent Updates: Unlike your computer’s operating system, which prompts you for updates regularly, IoT firmware is often neglected. Many manufacturers do not provide long-term security patches, leaving known vulnerabilities open for years.
- Lack of Encryption: Some lower-cost devices transmit data across your network without encryption. This means that if an attacker manages to get a foothold on your Wi-Fi, they could potentially “listen in” on your camera feeds or intercept sensitive commands.
- Invisible Presence: Because these devices often sit in the background, they are rarely monitored. A hacked camera might continue to function perfectly while secretly sending data to a malicious server halfway across the world.
The Risk Beyond the Device
The danger isn’t just that someone might see through your camera. In a business environment, a compromised IoT device can be used as a “pivot point.” Once an attacker has control of a smart device, they can use it to scan the rest of your internal network, looking for ways to access your more sensitive systems, such as your financial records or client databases.
Think of it like a burglar finding an unlocked window in a garden shed. They might not find anything valuable in the shed itself, but once they are inside the garden, they have a much better chance of finding a way into the main house.
Practical Steps to Enhance Your Security
While no device is ever entirely risk-free, there are several strategies you can consider to significantly strengthen your defences:
- Change All Passwords Immediately: Never leave a device on its factory default settings. Use a unique, complex password for every single connected item.
- Create a Guest or IoT Network: Consider setting up a separate Wi-Fi network specifically for your smart devices. This isolates them from your main computers and servers, limiting the “blast radius” if one device is breached.
- Audit Your Devices: Periodically check which devices are connected to your network. If you are no longer using a “smart” feature, consider disabling its internet access entirely.
- Research Before You Buy: Prioritise reputable manufacturers that have a clear track record of providing regular security updates for their products.
How Vertex Can Help
Navigating the complexities of a modern, connected network can be a daunting task for any business. At Vertex, we specialise in helping organisations identify these hidden vulnerabilities before they can be exploited. Whether through a comprehensive Cyber Security Audit or technical Penetration Testing, our team of experts can help you ensure that your “smart” investments don’t become your greatest liabilities.
If you would like to understand more about securing your connected environment or wish to discuss a tailored security plan, please contact the expert team at Vertex Cyber Security or visit our website for further information.