Security of app's
Better safe than sorry - especially when downloading or installing software. Why then are problems unprobable with my app's? The best is to have a look on standard installation steps using the example of Android 5.
Every German website can be checked at www.denic.de, the official manager of the top-level domain ".de". For that you have to do a who-is-request. If you see (as with "luers-net.de") a trustworthy zonemaster and for the domainholder directly the name and address of the holder of the website, then this is already a good indication.
A second important indication for good-natured software is that sources of the app are freely available - keyword open source. In case of any doubt anyone can look into it. If there are problems, somebody will cover this subject.
For that aim you have to verify that the app has been built from these sources. The source code that was compiled by you, must exactly reproduce executable code of downloaded .apk-file. How to check this, is explained here.
As soon as you have clicked on app symbol for downloading the app, the .apk-file linked to this symbol is downloaded. I use Android 5 and on my device on the left of top status line a small icon is displayed. By a downwards wipe the file name is displayed.
At the latest here you see the name of file that has to end with .apk. App's always are delivered as .apk-files. You can trust this file, if it comes from a wellknown and good behaving person or company and you can verify its function at any time by checking its sources.
Apropos this does not apply to "S Finder" and "Quick Connect". Although coming from a wellknown company, you cannot verify its function. Their security is limited to the fact that you surely cannot deinstall them.
If you click on the entry, then you will be asked, if you want to install it. That is a good thing, because hopefully it gives a wake-up call to the user in case of his intention is not to install an app.
Here click on "Settings", if I am trustworthy in your eyes.
This warning message suggests that Play Store and all its app's particularly are secure, while app's coming from other sources automatically are insecure - comprehencable that the manufacturer of this store predicates that.
By the way, blocking my app is caused by following reason: Originally I wanted to add my app's to Play Store. 25US$ are not too much, but you cannot pay by credit card. Additively to your GMail account and developer account you have to create a "Google payments account" - unfortunately I was not able to find any details about which information is enquired and if there are any alternatives. The internet is like being emptied for that topic.
To approve installation you have to tick "Unknown sources".
This is not a problematik thing, because a second warning will be displayed and this tick can be automatically reset after current installation.
The good thing about next warning is that it allows to automatically reset the last tick after installation has finished. You should leave the check ticked and should press "OK".
Besides that, in my opinion this warning message fans fear. I personlly thing that there's no possibility for an app to damage a device, if Android and drivers work in a correct way. Furthermore, rights system should reliably prevent all accesses on functions that are not allowed - what else is its purpose? Personal data can be damaged by any app with appropriate rights. Moreover I have reason to doubt that in case of damages or data losts caused by app's of Play Store, someone could be found who accepts responsibility.
This is the only important and at the same time last notification. It shows which rights are needed by the app and asks, if you want to install it. The rights determine what an app can do. The more rights are necessary, the more dangerous the app. Only some app's look so good as Primore does.
That's all. It was not too hard to do, right?
Enjoy my app's!