A Customer Asked: “Can My August Smart Lock Be Hacked Through Bluetooth?” — What the Evidence Actually Shows

Last updated: July 31, 2026

The short answer: No, not in the way the movies show it. August smart locks have reported Bluetooth security concerns, but they require specific hardware, proximity, and patience, not a “hacker van” outside your door. The security considerations are more nuanced than sensational headlines suggest.

Table of Contents

• The Short Answer: Can August Locks Be Hacked Via Bluetooth?
• The Full Answer: Where the Vulnerability Actually Lies
• Related Question We Often Hear
• When the Answer Is Different
• FAQ: August Locks and Smart Lock Security

The Short Answer: Can August Locks Be Hacked Via Bluetooth?

Yes – but the word “hacked” oversells what’s actually possible. Can August smart locks be hacked via Bluetooth security risk Etobicoke homeowner scenarios fall into two categories: the theoretical lab flaw that researchers found, and the practical break-in scenario you should actually worry about.

Security researchers have discussed replay attack concerns involving August locks and Software Defined Radio equipment. Such scenarios require someone to be close to the lock, capture a signal, and remain within range. This is different from someone sitting in a car a block away.

The more practical concern: August’s Wi-Fi bridge (needed for remote access) can be a liability if your home network is weak. A burglar with physical access to your porch or vestibule can test the lock mechanically – and if August’s app fails or the battery dies, you’re locked out. Neither of these is a Bluetooth “hack,” but both are real.

The Full Answer: Where the Vulnerability Actually Lies

The Replay Attack: Real Lab Flaw, Limited Real-World Danger

In early 2023, researchers at KU Leuven published detailed findings on August’s Bluetooth implementation. The flaw: August locks don’t use a rolling code. Instead, they rely on time-based authentication. If an attacker intercepts your unlock signal (the Bluetooth message your phone sends to the lock), they can replay it later – potentially from a distance if they use a more powerful radio setup.

What this actually means: An attacker needs to be within Bluetooth range (30-50 feet, depending on obstacles) when you unlock the door. They record that signal with an SDR. Later, they return and replay it, trying to fool the lock into opening. August’s firmware has since been patched to improve defenses, but the underlying protocol still has design gaps that don’t use a rolling code – a security standard for 15+ years.

Reality check: This requires expensive hardware, technical skill, and sustained proximity. A burglar shopping for your property would use a pry bar or bump key first. But it’s not theoretical – it’s reproducible in a lab, and August knew about it.

The Wi-Fi Bridge Gap: The Actual Weak Link

If you want to unlock your August lock remotely, you need their Wi-Fi bridge – a small device that sits inside your home and relays commands from August’s cloud to your Bluetooth lock. This bridge is the real security bottleneck, and it has a track record of issues.

We’ve seen this firsthand in Lakeshore condos and Mississauga homes: The bridge drops offline. Your app can’t reach the lock. Worse, if someone is inside your Wi-Fi network (either physically or through a poorly secured router), they might be able to interact with the bridge – or see traffic to/from the lock. August’s implementation doesn’t encrypt bridge-to-lock communication as rigorously as competitors like Yale Assure or Schlage Encode.

“The Bluetooth flaw is real but narrow. What worries us more is the Wi-Fi bridge reliability and the number of homeowners who don’t update their router password or turn off WPS. That’s the actual entry point.” – Etobicoke Locksmith Team

August’s Response: Firmware Patches, But Not a Full Fix

August pushed firmware updates in late 2023 and early 2024 to make replay attacks harder. The updates improved rate limiting (the lock now rejects unlock attempts if it sees too many in a short time) and tightened timestamp validation. But the underlying architecture – the lack of a rolling code – remains unchanged.

An analogy: If your car’s alarm system accepts the same radio code repeatedly, a patch that makes the door beep faster when you try won’t solve the core problem. It makes the attack harder, not impossible. For Etobicoke homeowners in Long Branch or New Toronto who already have August, the firmware update is essential. For anyone considering a smart lock, it’s a reason to look at alternatives.

What About the Lock Itself? Mechanical Weakness

August Smart Locks retrofit onto your existing deadbolt – they don’t replace the cylinder. They work by motorizing the inside of your lock, automating the thumb turn. Here’s the problem: If the lock cylinder itself is weak (standard pin-tumbler, easy to pick or bump), an attacker can bypass the smart part entirely and pick the mechanical cylinder in 30 seconds.

August’s marketing may not address the condition of existing door hardware. A smart lock retrofit depends on the cylinder and door hardware already in place. Adding a smart motor to weak hardware does not address the underlying security concern. Rekeying or changing hardware can be considered as part of an overall door security assessment.

Competitors: How Yale Assure and Schlage Encode Compare

Yale Assure and Schlage Encode are fully integrated locks – the smart components and the cylinder are one unit. Both use rolling codes (a different Bluetooth token each unlock), which defeats the replay attack August is vulnerable to. Neither requires a separate Wi-Fi bridge (though both offer remote access through WiFi if you add one).

Cost trade off: Yale Assure, Schlage Encode, and August smart lock options are priced per job. Product features and existing door hardware can affect which option suits your door. If existing lock hardware is weak, replacing the whole assembly may be worth considering.

The Real Risk: What Burglars Actually Do

Honest talk: Burglars don’t spend 15 minutes capturing Bluetooth replays. They kick the door. If that doesn’t work, they pry it with a crowbar – most residential frames fail in under 30 seconds. If they’re patient, they pick the cylinder. If they’re tech-savvy, they watch for poor home security habits (open garage, package notifications, obvious vacation timeline on social media).

The Bluetooth flaw exists. It’s not a boogeyman, but it’s real. For someone in The Queensway or Islington Village with an August lock and a weak entry frame, a burglar’s time is better spent on leverage than radio hacking. The lock is a minor part of your security posture. Your frame, your door, your neighbors, your habits, and your alarm system matter far more.

Related Question We Often Hear

When the Answer Is Different

You Have an Older August Lock (Pre-2023 Firmware)

If your August lock hasn’t received a firmware update since mid-2022 or earlier, the risk is higher. Update your lock now through the August app – it’s free and automatic if you have the Wi-Fi bridge. If your Wi-Fi bridge is offline, you can’t update remotely. Manual updates are possible but tedious. This is one reason we recommend owners check their app settings quarterly.

Your Home Network Is Weak or Open

If your Wi-Fi router uses WPA2 only (no WPA3), has a default password, or WPS is enabled, an attacker inside your network can potentially interfere with your Wi-Fi bridge. This is network security, not a smart lock flaw – but August’s bridge depends on it. Securing your router is more important than the lock you choose.

You’re Renting, and the Landlord Requires Traditional Locks

August’s non-invasive install (no drilling, no cylinder replacement) makes it ideal for renters. But if your lease prohibits any modifications, even August’s surface-mounted retrofit might not be allowed. Confirm in writing before installing any smart lock.

You Live in a Multi-Tenant Building (Condo, Apartment)

Condos in Etobicoke and Lakeshore often have restricted-key systems or building-mandated lock standards. We recovered an Islington Village condo after the resident lost both keys – the building’s restricted-key system meant the lock was registered to the building, not the individual. Confirm your condo’s policy before installing August. Some buildings require Medeco or ASSA Abloy high-security cylinders, which aren’t compatible with August’s retrofit design.

FAQ: August Locks and Smart Lock Security

1. Has August fixed the Bluetooth replay attack?

August has released firmware patches (2023-2024) that make replay attacks harder by adding rate limiting and stricter timestamp validation. However, the fundamental architecture – no rolling code – hasn’t changed. Security researchers still rate it as vulnerable in lab conditions, though practical real-world attacks remain rare. Update your lock immediately if you haven’t in the past 18 months.

2. Is it better to install a smart lock on my existing deadbolt or replace the whole lock?

Replacing the whole lock, such as with Yale Assure or Schlage Encode, can give you the option to select the cylinder quality. August retrofits depend on the existing cylinder. If your current lock is a standard pin tumbler, replacing it may be worth considering as part of your door security plan. A professional locksmith can assess the hardware and provide the exact price before any work starts.

3. What should I do if I already have an August lock installed?

First, ensure your firmware is current (check the August app). Second, set up the Wi-Fi bridge and use a strong, unique Wi-Fi password. Third, consider your overall entry security: Is your door frame solid? Are your hinges reinforced? A strong frame matters more than the lock type. If you live in a low-crime area (many Etobicoke neighborhoods are), August is fine. If you’re in a higher-risk area or simply want peace of mind, start budgeting for a Yale Assure or Schlage Encode replacement.

4. Should I worry about my August lock being hacked right now?

Statistically, no. There are no confirmed real-world break-ins using August’s Bluetooth flaw. The vulnerability exists in controlled lab conditions and requires expensive hardware, technical skill, and sustained proximity. A burglar is vastly more likely to kick your door, pick your cylinder, or check for an unlocked window. The Bluetooth flaw is a legitimate security gap, but it ranks below frame strength, neighborhood crime rates, and your own security habits. That said, if you value defensive-in-depth and have the budget, upgrading to Schlage Encode eliminates this category of risk entirely.

Final Thoughts: Smart Lock Security Isn’t Just Bluetooth

For homeowners in Etobicoke, Lakeshore, Mississauga, and the surrounding West GTA, the smart lock conversation should start with your entry door itself, not the electronics on it. A smart lock on a weak door may not address the underlying concern. A well considered smart lock setup can include a solid frame, suitable hardware, an alarm system, and smart security habits.

Bluetooth security should be one consideration when choosing a smart lock. If you already have August, keep your firmware current and focus on the things that matter: a strong frame, solid cylinder, secure Wi Fi, and situational awareness. If you are choosing now, compare Yale Assure, Schlage Encode, and other options based on your door hardware and security needs.

One more honest note: homeowners may focus on a smart lock while overlooking door frame reinforcement. Consider the condition of the frame and door hardware as part of your overall security planning. Then consider Bluetooth.

Sources

1. August Smart Lock Bluetooth vulnerability research – KU Leuven University
2. Yale Assure and Schlage Encode smart lock specifications – ASSA Abloy (parent company)
3. Residential lock security standards and best practices – Better Business Bureau Security Guidelines
4. Etobicoke Locksmith service records and pricing – Etobicoke Locksmith Official