What risk is posed by internet of things devices
Smart devices rarely announce when they become a security problem. They keep blinking, recording, measuring, and connecting while hidden weaknesses quietly build in the background. What risk is posed by internet of things devices is no longer just an IT question—it affects homeowners, businesses, hospitals, schools, and anyone who relies on connected technology every day.
The biggest challenge is that IoT devices often prioritize convenience over security. A connected camera, smart thermostat, fitness tracker, or industrial sensor can become an entry point into an entire network if it is poorly configured or left unpatched. Understanding where those risks come from—and how to reduce them—is the difference between a secure connected environment and one that can be compromised with surprisingly little effort.
What causes the security risks in Internet of Things devices
Most IoT security problems begin long before a device reaches your home or office. Manufacturers frequently design products to be inexpensive, energy-efficient, and simple to install. Security sometimes receives less attention than speed of development or feature lists. That design choice creates weaknesses that attackers actively search for.
One of the most common issues is default credentials. Many devices still ship with factory usernames and passwords such as “admin/admin” or other predictable combinations. If users never change those credentials, attackers can automate internet-wide scans looking for exposed devices and attempt known default logins. The result is unauthorized access without needing advanced hacking techniques.
Software updates present another challenge. Unlike smartphones and laptops, many IoT devices receive firmware updates infrequently—or stop receiving them after only a few years. Once vulnerabilities become public, unsupported devices remain permanently exposed unless replaced. And that creates a growing population of connected products with known security flaws.
Network exposure also plays a major role. A smart security camera connected to the same Wi-Fi network as work computers, banking devices, and personal files creates unnecessary risk. If the camera is compromised, an attacker may attempt to move across the local network (a technique known as lateral movement) instead of targeting the camera alone.
Here’s the thing: many users assume a small smart plug or connected light bulb cannot possibly matter. Realistically, attackers often look for the weakest device first because it provides the easiest foothold into larger systems.
Privacy deserves equal attention. Many IoT products continuously collect location data, usage habits, voice recordings, or video footage. Even when a device is not hacked, excessive data collection or poorly protected cloud storage increases exposure if that information is leaked.
And wireless communication itself introduces another layer of risk. Bluetooth, Zigbee, Wi-Fi, NFC, and proprietary radio protocols each have different security models. A weakness in implementation (rather than the protocol itself) can expose sensitive information or allow unauthorized commands.
How to fix it and reduce IoT security risks
Security improvements do not require replacing every smart device. Most successful defenses come from correcting common configuration mistakes before attackers can exploit them.
1. Change every default password immediately.
Log in to each IoT device using its management interface or mobile application. Replace factory credentials with a unique password of at least 16 characters. Store these passwords inside a reputable password manager instead of reusing the same password across devices.
This single step eliminates one of the easiest attack methods used against internet-connected hardware.
2. Update firmware before regular use.
Open the device settings and look for options such as:
- Firmware Update
- Software Update
- System Update
Install the newest available firmware before connecting the device permanently to your network.
If command-line access exists on Linux-based devices, firmware information may sometimes be verified using commands such as:
uname -a
or
cat /etc/os-release
The available commands vary by manufacturer, so always follow official documentation before making changes.
3. Enable automatic updates whenever possible.
Many modern IoT devices support background firmware updates. Turn this feature on if available.
Be aware that automatic updates occasionally introduce compatibility changes (particularly with older smart home hubs), so business environments should test updates before deploying them widely.
4. Remove features you do not use.
Disable:
- Universal Plug and Play (UPnP), when unnecessary
- Remote management
- Telnet access
- Debug interfaces
- Guest accounts
Every enabled service increases the attack surface.
5. Separate IoT devices from important computers.
One of the most effective protections is network segmentation.
Create a separate Wi-Fi network or VLAN specifically for:
- Smart TVs
- Cameras
- Doorbells
- Smart speakers
- Home automation hubs
- Smart appliances
Keep work laptops, banking devices, and file servers on a different network.
Even if one IoT device becomes compromised, the attacker encounters additional barriers before reaching valuable systems.
6. Secure your wireless network.
Configure your router to use:
- WPA3 if supported
- WPA2-AES if WPA3 is unavailable
Avoid outdated standards such as WEP or WPA.
Also disable Wi-Fi Protected Setup (WPS), since older implementations have contained significant security weaknesses.
7. Review privacy permissions.
Many mobile apps connected to IoT hardware request access to:
- Contacts
- Microphone
- Location
- Camera
- Storage
Grant only permissions that the product genuinely requires.
And check cloud synchronization settings. Some devices upload far more data than users realize.
8. Monitor network activity.
Many modern routers display connected devices and unusual traffic patterns.
Watch for:
- Unknown devices joining the network
- Unexpected outbound connections
- Large uploads occurring overnight
- Devices communicating with unfamiliar servers
These behaviors do not always indicate compromise, but they deserve investigation.
If that didn’t work
Not every security concern has a simple fix because IoT ecosystems vary widely across manufacturers and product generations.
Older devices may no longer receive firmware updates. In those cases, there is often no permanent software solution. If a device has reached end-of-support status, replacing it is usually safer than leaving known vulnerabilities exposed indefinitely. That recommendation may seem expensive, but unsupported hardware becomes increasingly risky as new exploits emerge.
Some devices depend entirely on cloud platforms operated by the manufacturer. If that company experiences a data breach or eventually shuts down its service, local security improvements cannot fully eliminate the associated risks. This limitation surprises many users because the hardware itself still appears to function normally.
But enterprise environments introduce another layer of complexity. Industrial IoT equipment, medical devices, and manufacturing sensors sometimes cannot be updated immediately because firmware changes require certification or operational testing. In those situations, organizations typically compensate by isolating devices behind firewalls, limiting network communication, and monitoring traffic more aggressively instead of updating immediately.
There is also the possibility of supply-chain vulnerabilities. A device may leave the factory with secure firmware but later receive compromised software through an infected update server. Although uncommon, this type of attack highlights why downloading updates only from official manufacturer sources matters.
How to prevent IoT security problems going forward
Choosing secure devices before purchase is easier than repairing insecure ones later.
Research whether the manufacturer has a history of providing firmware updates for several years rather than abandoning products shortly after release. Check whether automatic updates, multi-factor authentication, encrypted communication, and responsible vulnerability disclosure programs are available.
Keep an inventory of connected devices—including installation dates and support status. Many households underestimate how many internet-connected products they own until they count everything from printers to smart plugs.
So review your network every few months and remove devices that are no longer used. Fewer connected systems generally mean fewer opportunities for attackers.
No security measure eliminates every possible threat, and any device connected to the internet carries some level of risk. The goal is reducing that risk to a level where attackers are likely to move on to easier targets instead.
Closing
The answer to what risk is posed by internet of things devices depends less on the technology itself and more on how those devices are deployed and maintained. Weak passwords, outdated firmware, unnecessary internet exposure, and poor network design remain the most common causes of compromise. Fortunately, most of these issues can be corrected without advanced technical knowledge. Start by updating firmware, replacing default passwords, and separating IoT devices from your primary computers. Those few changes provide far more protection than most people expect and create a much stronger foundation for every connected device you add in the future.
