Hey everybody!
Just a doubt
So, I want to build a chat app. My doubt is whether the information stored in my spreadsheet gets saved anywhere else.
Is it stored in Glide’s database or anywhere else in Google or the user’s device files?
I want the data in the app to be accessible only to the users using the app and me(the owner of the spreadsheet. By the way, I will be using the app too 
)
For example: If I send a message to my friend, then he should be able to read the message only in the app. It should not be stored on his device or anywhere where it can be seen outside of the app.
May I also know the security that Glide provides against hacking?
Thanks in advance!
The data is stored in whichever table you link to the chat collection. Data is also temporarily stored on the user’s device…they are able to see it in the app on their screen after all.
Use Row Owners.
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I don’t really know what it does. Can you please explain
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One more thing.
Imagine I’m a pentester(cybersecurity. Btw I’m not). Will I be able to see the app data if I hack the device with the owner’s permission? Or if I work with the government
If a pentester is able to gain access into the app, then yes they can access the data that has been downloaded to the device.
What if the user never downloaded any pics, videos, etc? And only used the app for messaging
Look, data needs to be downloaded to be displayed of the screen. That’s how every single website works, because it has to download some data and process code to render text and images on the screen. Glide also caches data from your tables locally and then synchronizes with the server behind the scenes. This is why glide apps are so responsive and quick. I don’t know how long that cached data sticks around, but for a period of time it does exist on the device.
Now if you are unlocking your device, signing into the app, and handing it to someone else…or you are allowing others access to your email account…then you have personally done nothing to secure your own data. If you are doing your due diligence to secure your accounts, your device, your data, and using recommended practices for securing data in your app, then it shouldn’t be much of a problem. The data chain is only as secure as the weakest link, and that chain include Glide, you as the developer, and your end users.
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Thanks for the help 
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