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Apple increases the protection of the iOS device against unauthorized access. This is likely to annoy the investigators.
With iOS 11.4.1, introduced a new security feature for Apple that limits unauthorized access to the device via USB accessories. Under Settings – Face ID and Pbadword, you will find the new "USB Accessory" option, which ensures that if the iPhone is locked for more than an hour, the device must d & # x39; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; first be unlocked before USB accessories can be used
GrayKey can unlock iPhones. However, with iOS 11.4.1, this is hindered by the restricted USB mode. (Image: Malwarebytes)
Apple responds to the crack code solutions offered by Cellebrite and Grayshift and used by law enforcement agencies around the world. For unmanaged devices, the default behavior is to disable the Lightning port data connection after one hour since the device was last unlocked or after an hour after it was disconnected from a reliable USB accessory .
In addition, the user must Elcomsoft security specialists can manually disable the USB port by activating the SOS mode. This feature is in fact intended to make an emergency call in case of emergency. If the procedure is interrupted, the fingerprint reader, aka Touch ID, turns off automatically, so that the smartphone can only be unlocked with the help of the code of the phone. 39; device.
Restricted mode activation report
Elcomsoft also claims that it is possible to prevent disabling the USB mode by connecting certain USB accessories to the device. Suitable for this is for example the Lightning Camera Adapter on USB 3, which sells Apple for 45 euros. This also has the advantage of having a charging port, so the iPhone is also loaded. A not insignificant criterion for investigative authorities when they use pbadword cracking tools that may take several hours or days to crack the pbadword of the iPhone
By plugging a Lightning adapter within the hour after locking the iPhone, you can prevent the disabling of the USB port (photo: Apple) [19659005] However, the iPhone must be connected to the iPhone before the expiration of the time of one hour use a suspensive effect. Once the Lightning / USB port is disabled, it will permanently stop communicating before the iPhone is unlocked.
iOS 11.4.1 shut down 22 vulnerabilities
With the iOS update, Apple has closed a total of 22 vulnerabilities. For the degree of gravity, it does not call any detail. There is also no indication under the corresponding CVE entries because these do not yet contain all the data.
There are 16 vulnerabilities in the interface of the Apple Webkit Browser only. Seven vulnerabilities were discovered by employees of Google (OSS-Fuzz) and Trend Micro.
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Battery Problems
The fact that Apple also repairs battery problems that some users have complained about after installing iOS 11.4 is not clear. Whatever it is, there are no details in the official release notes. In the update notification on the device itself, only issues resolved with "Find my iPhone" and sync with Exhcange accounts are resolved.
According to a detailed user test, the problems related to Wi-Fi connections seem 5 GHz Band. The test with four different routers and models iPhone 6, 6S and an iPad (5th generation) showed that the battery capacity of all iOS devices was significantly reduced regardless of which router they were connected to [19659006] The user noticed that initially no problem occurred. These occur, however, when the iPhone loses connection to the 5 GHz WLAN and then reconnects. The 2.4 GHz wireless LAN will not experience this connection interruption, which will occur after 10 to 60 minutes.
Disconnection in the 5 GHz band causes an increase in battery consumption
According to the test, the 4 and 5 GHz networks have an average of 0.5% per hour for iPhones and 0 , 1% for the iPad . After disconnecting for the first time, the iPhone 6 loses ~ 10% of its battery capacity per hour to standby without the screen being turned on.
In addition, the 5 GHz Wi-Fi disconnect also appears to affect other services. The user notices that after resuming the WLAN connection, the use of Airplay is no longer possible. In addition, the audio could no longer be broadcast via a Bluetooth connection, although calls via Bluetooth were possible. According to the user, these problems do not occur when the 5 GHz band is turned off and only a 3.4 GHz wireless connection is established.
Hint : Are You a Android? connoisseur ? Check your knowledge – with 15 questions on silicon.de
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