K7 Total Security Download For Windows 10 64 Bit Trial Version

[Anthony Small]

I downloaded the trial version of total security yesterday and decided to purchase it. I installed it and activated it butt the app and bitdefender central show it as a trial version. After the free 30 days, will I still have access to the full program?

The trial is for Total Security and currently you have an Iphone still allocated there and for this reason, Bitdefender will display the trial version on that device. The issue is that Internet Security only protects Windows devices, thus the Iphone cannot be added to this subscription.

You may contact our Commercial representatives to request the deactivation of the trial and a subscription upgrade from Internet Security to Total Security and this way you will also have mobile protection.

I have created my product and also generated license key for that but I want to ask that key after 30 days. I have do it with registry value storing the date with adding 30 days in that. But I found that if the user change the system date with 30 days before my logic not work.

You could have another registry key that you increment after every day's use. That way, even if they change the computer's date, this key would indicate to your program that it's been running for > 30 days.

To get around reinstalls, you could add some information to any file saved with the trial version of your app which is unique to that specific version of the app (perhaps a timestamp from when it was installed). When a trial version of your app tries to open a file, it will check this signature and ensure that it was created with that same instance, otherwise refuse to open the file. This essentially neuters the ability to simply reinstall the app and continue using it.

At the end of the day though, the user has complete control over their machine and can probably find a way around whatever it is you want to do (short of accessing a web service where these details are kept before you let the user use the app). You probably shouldn't expend so much energy trying to stop the guys who are willing to go through this extra trouble, but instead spend that extra time/money/energy improving the app for those who are willing to pay.

You need to have a way of detecting if the user changes the date from when you first started the trial. In solutions I've used before, we have saved the "last executed" date and the "first executed" date and if the clock changes to anything more than two days of "last executed" we expire the trial. You also need a "days executed" counter so that they can't keep moving the date two days back (forgot to mention that part) - the counter gets incremented on each execution.

Of course, software licensing systems like this are always avoidable by uninstalling and reinstalling with appropriate refreshing of the registry - the trick is obfuscating and duplicating your license information enough to make this difficult, but eventually, it will get found (especially if you're using an unobfuscated .NET codebase).

Hard to process 30 days without reference to the system date/clock. You could always keep a list of the dates on which the app was started and count 1 for every time it was different from the last time. This way your user would have to set the same date each time they fired up your app.

Other than that, you could, providing there were internet access, query a known good time server for the current date. This could be circumvented by disconnecting but you could always demand an internet connection before your app will start.

The idea is that it should be simple and easy to use. You can spend $$$ on protection but it may be hacked in one week. If someone wants to do reverse engineering of your code then no one can stop it. My advice to use simple methods that works.

you may also want to have some web service for validation. when internet connection is on you may validate the key, if it's hacked and available for public in internet you may ban it. Or if someone would write key generator you may validate that key is real.

IF you can guarantee an internet connection you could implement an online scheme (check a time server or your own authentication server). Of course that introduces another dependency - if the internet goes away, your users can't work.

As long as they can clear the registry value/isolated storage file/saved settings: they can just restart the trial. There's not much you can do about that. That's why people opt for reduced functionality in trial software, in addition to a time-based trial period.

If its acceptable to allow say 8 hours of trial usage (instead of a 30 day trial), then one way to remove the dependence on the System DateTime is by using a timer in your app which is fired say every minute. Count these and so every time the app gets run, it will accumulate a total usage minute count. You can then store this count value somewhere, such as in the registry.

It's simple store evaluation end date and check for it every day. To avoid extended usage by date manipulation, maintain an hour count in the application; keep incrementing and writing it to registry. Check should be done against both the evaluation end date and the hour count not to exceed 24 (may be 30 with some teolrence).

Saving the DateTime of the closing of the application, next time it's lunched your application will be able to detect if the Datetime setting was changed or not (at least they can't change it before to something before the closing time).Example :

Windows 10 IoT Enterprise is a full version of Windows 10 that delivers enterprise manageability and security to IoT solutions.
Please refer to this MS documentation: -us/windows/iot/iot-enterprise/getting_started#long-term-servicing-channel-ltsc
Note:
Windows 10 IoT Enterprise offers both LTSC and SAC options, and OEMs can choose the one they need for their devices. For more information on how to reach out to a Windows IoT Distributor or how to purchase a license, review Licensing & Usage.

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