The Internet of Things gives us a good future, but one problem that is always overlooked is security. At this week's DEF CON contest, two researchers, Anthony Rose and Ben Ramsey, showed us this again, and they easily hacked into 12 BLE Bluetooth Smart Door Locks.
They found that some devices store passwords directly in plaintext, such as Quicklock and iBluLock locks. Anyone with a Bluetooth analyzer can easily invade these devices. There are also locks that are susceptible to replay attacks, which means that an intruder can wirelessly obtain data when the device owner unlocks, and then replay the data to unlock it. Other attacks are more complicated, but they are not too difficult.
Other researchers have also discovered the vulnerability of the door lock. For example, August's lock can be extracted from the paired mobile phone with a one-time key. The good news is that the vulnerability has been blocked.
What's even more tragic is that after he reported a vulnerability to those smart lock vendors, only one responded, but it did not release a patch.
For many devices, as long as the attacker can crack without using high-end equipment and tools, the tools used by Ramsey are cheap, adding up to less than $200. For smart products that are safe like door locks, it is best to buy the goods from brand manufacturers.
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