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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Info about this can be found here: https://pi-hole.net/ there is a subreddit about this. There are also many tutorials on the net. Of course, the filtering only works in your network at home. If you leave the WLAN with your smartphone, the filtering does not apply.
I don't use an virus Scanner. I am on Linux. Not that I couldn't get pwned but my habits are not what they use to be as they were back in the day. Most people I know don't use a virus scanner. If you are going to use a vpn I would use the following three. IVPN, Mullvad and ProtonVPN. https://techlore.tech/vpn and watch as much videos from Techlore on VPNs. DON'T buy some garbage vpn. Most are bullshit. https://www.youtube.com/results?search_query=vpn+techlore