Technology

SPS TechJam 2020

Today we kick off #TeamSPS TechJam 2020! We have 31 presenters leading sessions that “follow the sun” with our teams around the world! The event is framed in with a Hackathon and Deep Racer competition! We are embracing remote with all activities online! ๐Ÿ™Œ

Tech Jam Disrupt 2020 logo with a roaring green T-rex dinosaur wearing a small backpack

This graph of DNS requests by client at our cabin is a good example of how metadata and privacy interact. When did we get there? How many people were there? All reasonable things that you could derive from this metadata.

Stacked bar chart showing DNS client activity over 24 hours, with a large spike near 20:00 reaching over 600, then elevated activity through 08:00.

Just upgraded one of my Pi-Hole servers to v5.0! All went completely smooth. The new group filtering is interesting. I may put all my Apple TV’s in a group and restrict the DNS dramatically for example. Maybe block all for some Smart Home stuff and only whitelist what it needs.

I liked the privacy and security benefits of having a Pi-Hole at home so much that I decided to put one in the cabin too. Next up cable management. ๐Ÿ˜

Raspberry Pi in black case atop a mini PC, connected to a UniFi network switch and eero router with green and black ethernet cables on a wooden desk.

I find it interesting that my Pi-hole blocks 10-20% of DNS requests made when nobody is home. Average of 200 DNS requests every 10 mins when nobody is home, and 20-40 of those are some form of tracking. ๐Ÿ˜ 

In this time of Covid-19 it would be a good gesture for Xfinity, AT&T, and other broadband and wireless carriers to remove data transmission caps on customers.

The top blocked domain that my Pi-Hole is protecting me from every day is api.segment.io. That isn’t a web browser thing that 1Blocker could even block. It is API calls embedded, I suspect, in iOS Apps. I love having multiple layers of surveillance blocking!

Table of top blocked domains on a Pi-Hole, led by api.segment.io with 1070 hits, followed by mobile-collector.newrelic.com with 680.