Thursday, November 12, 2020

Your Computer Isn't Yours

It’s here. It happened. Did you notice?

I’m speaking, of course, of the world that Richard Stallman predicted in 1997. The one Cory Doctorow also warned us about.

On modern versions of macOS, you simply can’t power on your computer, launch a text editor or eBook reader, and write or read, without a log of your activity being transmitted and stored.

It turns out that in the current version of the macOS, it sends to Apple a hash (unique identifier) of each and every program you run. Lots of people didn’t realize this, because it fails gracefully when you’re offline, but today the server got really slow and it didn’t hit the fail-fast code path, and everyone’s apps failed to open if they were connected to the internet.

Because it does this using the internet, the server sees your IP, of course, and knows what time the request came in. An IP address allows for coarse, city-level and ISP-level geolocation, and allows for a table that has the following headings:

Date, Time, Computer, ISP, City, State, Application Hash

Apple (or anyone else) can, of course, calculate these hashes for common programs: everything in the App Store, the Creative Cloud, Tor Browser, cracking or reverse engineering tools, whatever.

This means that Apple knows when you’re at home. When you’re at work. What apps you open there, and how often. They know when you open Premiere over at a friend’s house on their Wi-Fi, and they know when you open Tor Browser in a hotel on a trip to another city.

“Who cares?” I hear you asking.

Well, it’s not just Apple. This information doesn’t stay with them:

  1. These OCSP requests are transmitted unencrypted. Everyone who can see the network can see these, including your ISP and anyone who has tapped their cables

  2. These requests go to a third-party CDN run by another company, Akamai.

  3. Apple is a partner in the US military intelligence community’s PRISM spying program, which grants the US federal police and military unfettered access to this data without a warrant, any time they ask.

This data amounts to a tremendous trove of data about your life and habits, and allows someone possessing all of it to identify your movement and activity patterns. For some people, this can even pose a physical danger to them.

Now, it’s been possible up until today to block this sort of stuff on your Mac using a program called Little Snitch. In the default configuration, it blanket allows all of this computer-to-Apple communication, but you can disable those rules and go on to approve or deny each of these connections, and your computer will continue to work fine.

The version of macOS that was released today, 11.0, also known as Big Sur, has new APIs that prevent Little Snitch from working the same way. The new APIs don’t permit Little Snitch to inspect or block any OS level processes. Additionally, the new rules in macOS 11 even hobble VPNs so that Apple apps will simply bypass them.

Those shiny new Apple Silicon macs that Apple just announced, three times faster and 50% more battery life? They won’t run any OS before Big Sur.

These machines are the first machines ever where you have to make an exclusive choice: you can have a fast and efficient machine, or you can have a private one. Short of using an external network filtering device like a travel/vpn router, there will be no way to boot any OS on the new Apple Silicon macs that won’t phone home, and you can’t modify the OS to prevent this (or they won’t boot at all, due to cryptographic protections).

Your computer now serves a remote master, who has decided that they are entitled to spy on you. If you’ve the most efficient high-res laptop in the world, you can’t turn this off.

Dear Frog, This Water Is Now Boiling

The day that Stallman and Doctorow have been warning us about has arrived this week. It’s been a slow and gradual process, but we have finally arrived. You will receive no further alerts.

See Also



from Hacker News https://ift.tt/36vBbUP

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.