The Invisible Signal Heist

Bluetooth and Wi-Fi serve as essential connections for smart locks, yet they also expose these devices to significant risks. Cybercriminals can employ inexpensive radio transmitters to capture and send unlock signals from a phone or key fob, even when it's stored in a pocket. This type of attack, known as a "relay attack," takes advantage of the typical 10–15 foot range of most locks, allowing thieves to imitate your presence effortlessly. Although premium models that feature “dynamic signal encryption” advertise their security, independent evaluations reveal that 30% of them still fail against advanced relay tools. This flaw poses a serious threat to wealthy homeowners, especially since their devices often contain multiple access credentials, turning this vulnerability into a tempting target.

Firmware: The Hidden Backdoor

Smart locks depend on software updates to fix vulnerabilities, yet numerous high-end brands choose to focus more on style than security. Cybercriminals often take advantage of firmware that is not up to date, exploiting unaddressed issues to manipulate access rights. According to a 2024 survey, 65% of high-end locks do not have features for automatic updates, which means users must manually apply fixes—a task that even tech-savvy individuals frequently overlook. To make matters worse, some manufacturers utilize generic code from outside vendors, creating universal backdoors that affect various brands. Just think about the risk of a single vulnerability granting access to both your front door and your vacation property’s entrance.

Biometrics: Not as Foolproof as They Seem

Systems that use fingerprints and facial recognition claim to be impossible to bypass, yet hackers are aware of the truth. High-quality images or 3D-printed copies of fingerprints, which can be created from hidden prints on glass, may trick 40% of average scanners. Even top-notch devices have difficulties with "spoofing in poor lighting," where infrared cameras cannot recognize fake skin. For individuals who chose biometric locks for ease of use, the situation is quite eye-opening: traditional keys, previously ridiculed as outdated, provide a security that doesn't have these digital vulnerabilities.

Defenses That Actually Work

Instead of abandoning smart locks, opt for wise choices. Look for locks that utilize “ultra-wideband (UWB) localization,” which accurately measures the distance from your phone and reduces the risk of relay attacks. Select brands that offer independent security evaluations and provide ongoing breach alerts. Additionally, think about physical security options: a deadbolt can secure your door even if the smart lock is hacked. For those managing several properties, centralized security systems can effectively oversee lock activities in real-time, helping to mitigate risks.

Smart locks are not inherently risky; their complex design requires vigilant oversight. Hackers usually do not target randomly; they seek out the easiest points of access. By understanding their tactics, you can transform a potential weakness into a strong advantage, ensuring your security meets your advanced lifestyle needs. Moreover, regularly updating your firmware and utilizing unique, robust passwords adds another layer of defense, protecting against evolving cyber threats.

（Writer：Haicy）