ooooh kay let's clear this thing out a bit.
This is the first time I've heard of a Google account rejecting a log-on from a customized OS.
I can't explain it. Perhaps someone else can.
What device are you running Windows on? The screen capture makes it look like a phone.
Is this image actually an email, a page in a browser or something else?
It may be your 1st time but Google is on the lookout for quite some time now. The device is indeed a phone and the page he is viewing is the general account info and security center that can be accessed from phone and PC as long as you log with the right credentials. He is accessing it from his phone cause... he can't access it from his PC which is the problem in the first place if we think about it.
Hi Everyone, I am facing some severe issue with this build. I installed it yesterday and it was working as expected. Today, I received an email from Google- suspicious app detected. I am very concerned now. I am trying to attach screen shot but it doesn't allow me to upload one. Please suggest.
You must be registered for see links
First of all, it's not the OS that Google is blocking but an application you (or someone/something else) installed on said OS. That can be anything from the browser (if it's not official chrome) to an addon on whatever browser you use to an APP that uses the google sign up/login process or even something to manage Gdrive or gmail or any google service including sripts. In the image, you linked, it shows the origin which is the PC with this OS installed and it clearly says...
Device WITH suspicious app. It doesn't say Device with the suspicious OS. Furthermore, the app was detected 38 min from when you took the screenshot. If it was the OS itself it would have detected it from the very first moment.
Now if you look at the start it says "someone might have accessed your account using a suspicious app..." The OS itself never uses a Google account.
As you see from the above it's highly unlikely that it's the OS but it's something you installed after the OS.
Open myaccount.google.com/security#activity
Click on your avatar at the top right of the page
Click on Manage your Google Account
Click on Security
Scroll down to Recent security events and click on Review events
After you see which event (application) caused the alarm, remove it and do a virus scan on your PC.
If it is an OS app or an app included with this build, let us know otherwise we will consider it as the OS is clean.
Hope it helped.