Long-term Field Test: 21.09.2018 to date
The anniversary iPhone X is great. But its successor, the Xs, has a few advantages that make me want to switch. These include doubled memory and a truly single-cell battery, which I hope will provide better performance and last longer. In the anniversary model iPhone X, Apple still has a makeshift L-shaped battery consisting of two cells of different sizes. There was probably not enough time to develop the L-shaped Li-polymer battery, so a two-cell battery was used for the time being.
This is my fifth test of an iPhone. I hope you enjoy reading it!
Photo 1: Original box Apple iPhone Xs, 512 GB, colour space-grey, upper side
14.09.2018: Telekom will not take me for a fool a third time and deliver in mid/late December despite the “reservation ticket”!
This time I'm buying with pre-order online directly from Apple!
21.09.2018: The pickup at the Apple Store Frankfurt runs smoothly thanks to a proven organization with a time slot.
I am super satisfied with this Apple store and can recommend it to everyone!
Don't fall for dubious marketing tricks with “reservation tickets”, buy with pre-order directly from Apple, if you can!
Anyway, SIM-only deals are mostly cheaper as contract phone packages and you are more independent.
Picture 1: opened original box of the Apple iPhone Xs shows the scope of delivery
Picture 2: open cardboard box with Apple iPhone Xs
Picture 3: open cardboard box with Apple iPhone Xs on the box, in front the papers and the Tool for opening the SIM card drawer
Picture 4: Apple iPhone Xs on the cardboard box
Picture 5: Apple iPhone Xs on the box
Colour: Gold (also available in silver and space grey)
Storage capacity: 512 GB (also available with 64 and 128 GB)
Dimensions and weight: 143.6 x 70.9 x 7.7 mm, 177 g
Super Retina HD-Display with 3D-Touch
5.8-inch (diagonal) all-screen OLED Multi-Touch display
HDR display, 2436x1125-pixel resolution at 458 ppi
1,000,000:1 contrast ratio (typical)
625 cd/m² max brightness (typical)
Wide colour display (P3)
Fingerprint-resistant oleophobic coating
True Tone display
A12 Bionic Chip with 64-bit architecture, neural architecture, integrated M12 motion coprocessor
Working memory (RAM): 4 GB
12-megapixel camera with wide-angle and telephoto lens
Wide angle: Aperture f/1.8
Telephoto lens: Aperture f/2.4
optical zoom, up to 10x digital zoom
Image stabilization for wide angle and telephoto
Panorama recording up to 63 megapixels
Sapphire crystal lens cover
Body and face recognition
automatic HDR for photos
Continuous shooting mode
HEIF and JPEG image formats
7-megapixel camera (front camera)
1080p HD video recording
Body and face recognition
automatic image stabilization
Continuous shooting mode
FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66)
TD-LTE (Bands 34, 38, 39, 40, 41)
UMTS/HSPA+/DC‑HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
802.11ac Wi-Fi with MIMO
NFC with reader mode
Assisted GPS, GLONASS, Galileo and QZSS
digital compass, Wi-Fi, Mobile data, iBeacon micro-location
Voice over LTE (VoLTE)
FaceTime video calling over Wi-Fi or a mobile network
Audio formats supported: AAC-LC, HE-AAC, HE-AAC v2, Protected AAC, MP3, Linear PCM, Apple Lossless, FLAC, Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3) and Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX and AAX+)
User-configurable maximum volume limit
Video formats supported: HEVC, H.264, MPEG-4 Part 2 and Motion JPEG
Supports Dolby Vision and HDR10 content
AirPlay Mirroring, photos and video out to Apple TV (2nd generation or later)
Video mirroring and video out support: up to 1080p through Lightning Digital AV Adapter and Lightning to VGA Adapter (adapters sold separately)
Send messages with your own voice, make calls, set reminders, and more.
Get proactive suggestions, use hands-free, listen and identify songs.
Picture 6: Apple Lightning-to-USB-Cable
Picture 7: Apple 5-watt power supply unit (with socket for Lightning-to-USB cable)
Battery lasts up to 30 minutes longer than iPhone X
Talk time (wireless): Up to 20 h
Internet usage: Up to 12 h
Video playback (wireless): Up to 13 h
Audio playback (wireless): Up to 60 h
Fast charging: Up to 50% in 30 minutes (with 18W adapter or higher; sold separately)
Integrated rechargeable lithium-ion battery: 2658 mAh
Wireless charging (with Qi chargers)
Charging via USB port on computer or power supply
Tip: If charging with the supplied 5W power adapter takes too long, use Apple's power adapter for iPads or that of the MacBook (Air) instead.
You can also buy the power adapter separately.
However, slower charging will save the battery …
On the next pages I describe my own experience.
Very individual, difficult to compare. Everybody defines few and many users differently, not to mention the term normal user.
Little use: 2 days (assistant Siri, a few e-mails, a few iMessages, calendar, notes, 3 hours listening to music, minimal web).
Frequent use: 1 day (read a book [Kindle app], Siri, some emails, iMessages or SMS, calendar, notes, calls, 5 hours listening to music, 3 hours web).
In order to save the battery, which cannot be changed by the user, I let it go to its limits as seldom as possible, because this unnecessarily wears it out.
At a residual charge of about 30%, the battery is charged up to about 70%. There are only deviations if I look at the iPhone too late.
If you let the battery become almost empty and charge it up to 100% (e.g. overnight), you stress it and use up a full charge cycle.
Modern lithium-ion batteries can cope with 300 to 500 charging cycles. In practice, these are achieved within 2 to 5 years, depending on treatment.
The relatively slow charging on a notebook does not bother me! So the battery does not get hot during charging (heat – mortal enemy of every battery).
That's what Apple calls their call filter.
Apple calls it “Do Not Disturb” – check the setup menu DND / Allow calls:
Callers with suppressed call number immediately get a busy signal or be thrown to the mailbox when activated DND.
Families and friends who suppress their call number (call without a caller ID) can only call at certain times. For example, between 18:00 and 20:00 everyone would go through, even if the caller can not be found in the address book of your iPhone because of CLIR (abbreviation for Calling Line Identification Restriction).
The outgoing message to your mailbox you could formulate accordingly:
“landed on the mailbox only because of CLIR,
… please next time call with activated caller ID!”
If anonymous callers, stalker, automatic dialing and dialing the wrong number fax machines are to be blocked, but everyone else should call contact saved in the iPhone address book, you can find the ideal solution later in the settings menu:
This option allows the selection of contacts / groups
As soon as diallers of dubious advertising callers ring at short intervals without interruption and suppress your own telephone number or display a fake, constantly changing telephone number, DND must remain active, otherwise you are no longer reachable for serious callers!
Apple customers had to wait until 19 September 2019 for a proper call filter. Only with iOS version 13 did Apple deliver this function, which is a matter of course for smartphones. The first iPhone generation with an effective call filter was the 11 series: iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max were delivered with iOS 13.
Calls from unknown numbers are muted, diverted to the answering machine (also called mailbox/voicemail) and displayed in the call list.
If you have deactivated the answering machine, these callers immediately receive a busy signal.
For incoming calls from your contacts, people who have called you recently and Siri suggestions, the iPhone will continue to ring.
That's a great solution, because I'm sure many customers call new contacts before they have time to save them in the address book.
Apple has also extended the sorting out of unknown contacts to iMessage and SMS …
iMessages and SMS that do not come from your own contacts are sorted into a separate list.
If you have to be available to everyone and only want to block unwelcome spammers, you better buy an app to handle it. But be careful! There are many rip-offs!
My switch to Apple was like a culture shock, as there wasn't even a proper call filter with this phone and only since iOS 13 (?) has there been the option to dedicate a busy signal to anonymous callers!
This year, the iPhone will become a full-fledged phone in autumn, because it will finally get location- and time-dependent profile control with iOS 15! Apple calls this “Focus” and integrates “DND” as a part of it. Apple's customers have been waiting for this feature since iPhone 1!
Since iOS 14.7 (?), unwanted phone numbers can be blocked directly from the call list, without having to save them in the address book!
If you make a mistake (e.g. slipped in a line, got the wrong contact), you can tap on “Unblock” immediately afterwards.
If you want to unblock the contact later or check all blocks already stored, you can do this via the settings menu:
Settings/Phone/Blocked contacts/Add contact. Search for names in the address book, select, done. While you're at it, you can also add annoying insurance agents, colleagues etc. When you are done, press Cancel in the top right-hand corner. This will take you directly back to the “black list” without selecting a new candidate and you can also undo blockings by swiping the name to the left. Then “Unblock” appears to the right of the entry, which you tap to confirm.
Technically thrilled (and) sci-fi fans would like to use their computer as in the Sci-Fi series Star Trek by language.
Since then you can control the iPhone by voice.
Unfortunately, Steve Jobs had decided to let the very powerful software work very slimmed down online.
The original software could run completely without an online connection to the data center on the iPhone and would not be as restricted as we know it.
I see the main purpose of a digital assistant in the operation of the smartphone, without taking it into the hand. Anyone who uses a Bluetooth headset is particularly pleased about this possibility, because this way the iPhone can remain protected in the pocket.
On most headsets, the voice control is started with a long press on the call answering button. If you use a headset on an Apple iPhone from version 4s upwards, the assistant Siri is addressed. Instead of saying “Hey, Siri!” you speak into the microphone right after the confirmation tone.
Siri answers questions about the weather, can send dictated messages, read the messages received, remind them of appointments, wake up in the morning, play their own music, call the performers of a running music track, and the events of sporting events and much more.
A few examples …
So you call the assistant and immediately afterwards the question or the desire.
Siri understands freely formulated questions / instructions and answers some questions with a comment …
Example: To the question “How cold is it now?” Siri replied, “It's now 6 degrees, but I do not think that's cold, Michael!”.
By the way, forSiri is bitterly cold 4 degrees down, Siri comments on all of them, “… but I do not find it cold”.
Since foreign languages do not have the same priority at Apple, Siri is still not as humorous as in her native language.
There is a separate database for each language.
For several months, Siri has been commenting on any temperature from about 20 degrees Celsius as “hot”.
Picture 8: Import pictures and videos
After establishing the USB connection with a Windows computer, Windows asks the user whether the pictures and videos found on the iPhone should be displayed in the Explorer window or copied to the hard disk (see illustration above). Without iTunes, this is the only way to at least get pictures and videos from the iPhone onto the Windows computer.
By the way, this rudimentary backup function even works when connected to a Rasperry Pi. The editors of the computer magazine c't once presented such a solution for Linux. Better than nothing, but not a comprehensive backup.
To keep media content (books, photos, music, videos) on the iPhone in sync with a local computer, Apple's desktop software iTunes or a third-party solution is required.
Since macOS version Catalina (approx. May 2020), synchronisation or backup has been integrated into the Finder, i.e. Apple's file manager.
Only customers without a Mac, i.e. with a Windows computer, must continue to struggle with a not so smoothly running iTunes version. There is no comparable solution for Linux users.
For data protection reasons, German business people must avoid Apple's iCloud. Use iTunes or, even better, iMazing with USB cable or WiFi connection at home. Security-conscious private users should also do the same.
Picture 9: Optimal backup setting for iTunes (Screenshot shows German version)
When recharging the battery in the evening at the USB port of your PC, you can have iTunes create an encrypted backup on the hard disk or SSD (see illustration). It is also possible to synchronise your music collection on the hard disk with the iPhone.
An iCloud email account can, but does not have to be created!
PIM data such as email, addresses, tasks and notes can be easily synchronised with your existing email accounts.
For this purpose, the EAS protocol is also supported, which works with Microsoft's Outlook, but also with 1&1 Mail Business, for example.
Advantage of EAS: easy to set up and all data is available at all times while on the move (older mails are only reloaded from the server if required when “entire period” is selected for synchronisation).
Set transport encryption “SSL/TLS” with corresponding port!
Those who have Microsoft Outlook installed locally can keep it synchronised with the iPhone via iTunes (not tested myself).
I created a separate account for Posteo because I'm still using their calendar for a while (with CalenGoo).
I have uninstalled Apple's Mail app because I use Tutanota with their own Mail app.
I have never activated iCloud Drive and will never use it because American authorities can access it at any time for no reason.
I don't support mass surveillance because it's easy to become collateral damage: Backdoor keys are rarely carefully secured – therefore they are very desirable targets for criminals!
However, iMazing, a Swiss quality product from the Geneva-based software company DigiDNA, is much better than iTunes. I already preferred it to iTunes on the Windows notebook and it is simply a dream. iTunes felt sometimes as a nightmare on the Windows notebook.
iMazing automatically backs up the data from my iPhones to my MacBook Air via WLAN every day. Without a cloud. Works like a dream.
The feature-rich and user-friendly iMazing is the best manager for iOS devices on Mac and PC.
I have been using iMazing on my Windows notebook for years because Apple's patchwork iTunes is really no fun.
31.12.2017: Listen to my favorite album: The Best Of The Art Of Noise (1992), 2. Title: Yebo (Mbaqanga Mix). This is ideal for testing low-frequency playback! Also very good for testing is title 7: Legacy.
This is a synthesizer sound that is not objectively suitable for testing the sound quality of a music player – electronic music sounds good on every device. But I know this album inside and out, and I've heard it quite often on MP3 players (constant-quality coding, dynamic data rate up to 320 kbit / s).
For the objective test of the sound quality I have used musical titles with acoustic instruments and very often heard musicians.
Also the hearing test CD of the audio magazine HiFi was very helpful in the objective test of the acoustics.
The Apple iPhone Xs can really show that it has drawn up in the low bass area a frequency response as with the ruler. Otherwise, the bass would not be so abysmal, undistorted and clear (I can not measure it unfortunately). gsmarena.com always tests and publishes the frequency response diagram!
But because the Apple Xs no longer has a headphone jack like its predecessor, gsmarena.com can no longer offer an audio test. They write that a test with the Lightning-on-Headphone adapter would be possible, but the result would not be comparable, because you might use an adapter from another manufacturer. But: the acoustics of the iPhone Xs are just as good as its predecessor. Reference: gsmarena.com.
BTW: The trade magazine connect also tested the predecessor iPhone X in number 1/2018 and printed the frequency response very tiny. The frequency response is consistent with gsmarena.com – from 18 hertz to about 19,000 hertz as drawn by the ruler. My hearing was confirmed.
The signal-to-noise ratio is also excellent. Because the latency is extremely low, iPhones are liked by musicians and DJs.
Bottom line: the best high end music player – but not with the included Apple EarPods!
These have a too weak bass reproduction, but otherwise offer quite linear reproduction (writes the press).
Since I do not think of such gimmicks, I have not even unpacked these EarPods.
My audio test equipment: As headphones I use the Sony MDR-EX90LP.
This in-ear headphones in studio monitor quality provides a fairly unadulterated playback.
But this time it is not plugged into the Bluetooth audio transmitter Samsung Level Link because it can not be paired with the iPhone X.
I had to take out the adapter Lightning-on-jack from the packaging and listen to music by cable.
But as soon as you use iCloud for backups, end-to-end encryption no longer protects you because Apple adds the key for iMessage to every iCloud backup! Apple has the key for all iCloud accounts and has to hand it over to American authorities on demand (Cloud Act, GAG order etc.).
Those who observe the EU-DSGVO and respect the privacy of family, friends, colleagues, customers etc. avoid the iCloud!
Time and again one can read in the IT news that iPhones of journalists and other vulnerable persons have been spied on. Often the spy software got onto the iPhone unnoticed through a security hole in iMessage.
Cryptology professor Matthew Green now recommends Apple to rewrite the code base of iMessage completely. (Reference).
Apple had always closed the security holes relatively quickly, but as long as the code of iMessage is not significantly improved, there will always be successful attacks.
Threema is much more secure. It also works without personal data such as telephone number or email address. The Threema ID is sufficient.
With Threema you can chat end-to-end encrypted and make tap-proof phone calls. Please also read my article about instant messaging …
The Apple iPhone Xs provides excellent sound quality and supports HD Voice (Plus) – even with Voice over LTE (VoLTE).
If your call partner also calls via UMTS or VoLTE with HD Voice (Plus), you will experience a better sound quality than ISDN in the fixed network!
You can recognize callers and their state of mind in the voice and conversations remain more relaxed, because no disturbing noises annoy.
Many smartphones offer comparatively poor reception quality, especially when using UMTS and LTE. At best, the GSM frequencies can be received in satisfactory quality. If you live and work in a large city and rarely spend time in more rural areas, you will hardly notice this. Most smartphone users hardly make any private phone calls anyway and use instant messaging services instead.
Apple's anniversary model is the first that offers only mediocre performance in GSM and UMTS. And LTE is also only “good”.
After all: globetrotters benefit from the greater choice of frequency band compared to many competitor models.
Apple iOS, formerly also known as “iPhone OS”
With iOS version 12.1, which has been distributed since 30.10.2018, Apple has finally enabled the dual SIM function. Although you need an eSIM profile for the second line, at least it is possible with it.
On 14.12.2020 I expected the iPhone to be permanently defective after this unsuccessful software update.
Apple icon and progress bar remained on the display until next day around 10 p.m. Now the battery is empty and the display is black. End of the road.
With this uncertainty whether the iPhone Xs is really defective, I could not go to sleep on 15.12.2020, so I connected the “dead” iPhone Xs to the MacBook Air again and already the battery symbol with a red bar was visible as a sign of completely empty battery on the display. About two seconds later, the Lightning cable already appeared on the display as a symbol that the iPhone can be restored by connecting it to the computer.
So the firmware had only “stuck”. Since in this state it could not react to the usual commands with which one can restart or restore one's iPhone, the battery first had to be completely drained so that the firmware could start (“boot”) normally and thus all emergency options were available again.
The Finder immediately contacted me to offer a restore. I had to refuse this twice (closing the Finder window) before I could finally assign this task to my favourite iMazing.
Because iMazing had already saved the image file for iOS 14.3 from the previously unsuccessful update attempt and, after confirming the security prompt, began restoring and installing iOS 14.3.
Now everything worked fine.
Afterwards, I used the quick start function to copy all data and apps from my iPhone 11 Pro to the iPhone Xs.
Thus, the iPhone Xs was ready for use again after only one hour and I only had to delete three apps that were not needed on this iPhone.
App Store, Calculator, Calendar, Camera, Clock, Compass, Contacts, FaceTime, Files, Find My Friends, Find My iPhone, Health, Home, Mail, Maps, Messages, Music, News, Notes, Phone, Photos, Podcasts, Reminders, Safari, Settings, Siri, Stocks, TV, Tips, Voice Memos, Wallet, Watch, Weather, iBooks, iTunes Store
Pages, Numbers, Keynote, iMovie, GarageBand and iTunes U are preinstalled.
All Mobile Apps tested by myself you can find at Mobile Apps.
The audio quality is excellent! The frequency response is from 18 Hz to 19 kHz as pulled with the ruler – and the headphone output hardly any different!
Picture 10: Apple iPhone Xs, Colour Gold, backside
The excellently processed case feels very good and is a hand flatterer.
Picture 11: Apple iPhone Xs, Buttons on the left side
Picture 12: Apple iPhone Xs, SIM tray (opened) and standby button on the right side
The size of the screen is sufficient to even edit my website on the go. It is even good enough for watching television programmes.
Before the purchase of the iPhone I had already read of it, but now I notice this every day that it is true.
Normal “daily business” leaves it completely cold, everything runs smoothly and the housing is never warm.
Too bad that Apple does not provide an interface to evaluate the temperature of processor or battery.
I would be interested in how the situation is here – compared to the BlackBerry.
To protect your personal information on the iPhone Xs is now your face. The fingerprint scanner of older iPhones does not recognize its user as reliable as the infrared camera in the new iPhone Xs. Depending on the condition of the skin, my iPhone 6s Plus / 7 Plus / 8 sometimes did not recognize me and I often had to type in my very long password. My iPhone Xs just does not recognize me if I accidentally hold it too close to my face. Children and twins should refrain from Face ID because they could otherwise unlock their devices. Hand on heart: do children need such a sensitive iPhone Xs with glass case? (No!)
Picture 13: Apple iPhone Xs, main camera on backside
Apple's designers ignore any criticism and let the lenses of the main camera on the back of the device continue to protrude a bit out of the case. There is a reason for this: a good camera lens consists of several lenses and that takes up space!
A remedy, for example, a leather case from Apple, there named “Leather Case”. But I had only used it on the predecessor iPhone X, hence the link to the previous test.
This has an exactly matching opening for the lens bulge and thus the back is completely evenly smooth. This camera really makes outstanding good photos. In low light, these are a bit noisy, but in sufficient light, the quality of the compact cameras.
Thanks to the use of four satellite systems, the location is safer and possibly even more accurate. Documents / reports about it I could not find yet.
Picture 14: Lightning-on-USB cable (0.5 m) for 25.00 EUR (no joke, that´s Apple pricing)
Micro USB plugs are too fiddly and depending on the processing quality, which even varies with the original manufacturer, it is easy to connect or is difficult. So at least my experience.
Depending on the system, a lightning plug can be easily and precisely inserted into the lightning socket. Finished.
If you do not pay attention to details and processing quality, you will miss the detail, I think it is important.
Picture 15: Apple iPhone Xs on the box, frontside
Stainless steel and glass are susceptible to scratches. That's why I protect my iPhone with a black nappa leather case from fitBAG.
When I buy a new smartphone, I also buy a leather case from fitBAG (made in Germany) for it …
Picture 16: Black nappa leather bag from fitBAG (one side)
Picture 17: Black nappa leather bag from fitBAG (other side)
An expensive iPhone would like to protect against damage. Some use leather covers, other films. Foldable leather flip cases are also a popular solution. Disadvantage of these products is that one hardly feels or sees the beautiful housing directly with his hands. Another solution are sleeves, from which one removes the smartphone for operation. I like these sleeves from fitBAG the best, so I've been a regular here for years.
Despite custom-made bags and sleeves from fitBAG are not expensive! If you prefer bare glass with a stainless steel frame in your hand, you can save the money for an Apple leather shell (59 EUR!). Instead, buy a fitBAG leather sleeve for one third of the cost. Give the iPhone model and its housing dimensions +3 mm, so it is not too tight and the iPhone can be easily removed. After a few weeks of use, the sleeve widened slightly, but until then, the outer buttons would be loaded, which is too risky for me (I am very meticulous). From many years of experience, I can assure you that fitBAGs nappa leather sleeves are made exactly to customer specifications.
Apple's Leather Case makes a nice leather back without protruding camera lens. You can also have fitBAG's leather sleeve made for dimensions as Apple's Leather Case and thus combine both for optimum protection.
(1): Impractical workaround for this gross error: tap the dial, then it switches from 5-minute intervals to 1-minute intervals
(2): Just one of many practical NFC applications that are unfortunately not usable with the iPhone:
read out eTicket (local public transport time ticket) via the RMV app to check the expiry date of the ticket subscription.
Until Apple sees sense, this function will remain reserved for Android users. Even consumer protection in Canada could not prevail against Apple.
Some Apple peculiarities make a blanket recommendation impossible.
If you are willing to compromise and accept the disadvantages (maybe even because of the advantages), you will get a very nice and solid smartphone!
Expanding the internal memory is impossible – a slot for a memory card is missing! 64 GB is a joke these days, because:
If you underestimate the amount of memory you need, you will not be able to use your iPhone as intended for long, then it will limit you and become practically unusable.
Only if you want to use an iPhone as a luxury phone without collecting pictures or music will 64 GB be enough in the long run.
If your interests change later and you do want to store music collections or photo albums, you're screwed …
Storage outsourcing to a cloud requires a reliably available data connection so that required data can be downloaded quickly at any time. Without a Wi-Fi connection, this will be more expensive in the long run than the additional price for an iPhone with enough memory, as real mobile flat rates are expensive in Germany. Talking about additional price: 5 GB
are free you have paid for with the price of the device – they are neither enough for backups nor for further data collections. 0.99 EUR/month (50 GB) or 2.99 EUR/month (200 GB) are not expensive, but that is to encourage the population to upload personal data (the NSA can hardly wait)!
You should care that the NSA has access to your iCloud at all times – for business use (EU-DSGVO) and to protect the privacy of your fellow human beings, the use of the iCloud is therefore taboo!
Also remember that iMessage conversations are only secure if no backup is made to the iCloud! As soon as the iCloud is used even for one backup, these iMessage conversations including the key are available to American authorities!
Specifications Apple iPhone 11 Pro Max: Apple Support Website
iMessage: Code better be completely rewritten
heise online news 07/2021 (German-language)
Matthew Green: A case against security nihilism
Famous IT security researchers warn (German-language)