Care to share a website? (space name/address to break link)
Did you recently install any program / browser extension?
Did you recently allow push notifications?
Did you recently change site permissions?
Did you run Malwarebytes Scan?
How to install and run a scan with Malwarebytes [here]
Were my machine and I wanted reassurance.
I’d ask Malwarebytes Malware Removal Help Forums [here] to check my machine.