I cannot stress the importance of remaining as anonymous as possible online as an anarchist enough. Regardless of your level of action, or if you have not taken action at all, the State will take your opposition seriously. So every precaution must be taken to make your identification take as many resources as possible, therefore likely making you not worth the cost.
This post, of course, is not a comprehensive guide on the entirety of digital opsec practices or security culture as a whole. (For more information on all of that, I’d recommend reading these linked posts, as well as AnarSec, NoTrace Project, and these zines from Riot Medicine.) Here, we will focus primarily on the removal of metadata from files and photos.
Most people that submit anonymous communiques for actions are keenly aware of this and take appropriate steps, but the newly radicalized may be completely ignorant to the dangers of metadata. For example, when you snap a photo with your smartphone, it automatically adds GPS information to that photo. Anyone can download a photo from your social media page and view the exif data with easily accessible tools, therefore entirely compromising you in one swift motion.
I’ve written previously that I do not recommend using Windows, as their telemetry practices can be detrimental to privacy if not disabled, even if they did sort of walk back their plans to take screenshots every few minutes. For now.
However, since this is the most commonly used operating system, and switching to Linux may be, as of now, too difficult for some newcomers to all of this, we will start there and then move forward:
1. Windows
- I recommend the free and opensource tool ExifCleaner for Windows users.
- ExifCleaner is a simple GUI application that supports removing metadata from photos, videos, and PDF documents.
- ExifCleaner is cross-platform and can therefore be used with Mac as well.
- Cleaning metadata is as simple as dragging and dropping a file into the GUI and deleting metadata from there.
2. Debian-based Linux Distributions
I feel as though Linux distros beyond Debian-based are beyond scope of this article as they are less common. For example, the typical Arch Linux user is well-versed enough to know how to install and use a tool like this, considering what it takes to install and maintain it. However, I will add installation instructions if asked to do so.
3. Android & iOS
Using a smartphone for pretty much anything is not necessarily recommended. (see: Kill the Cop in Your Pocket.) The recommendation for having a smart phone will always come down to using GrapheneOS, on which exif-eraser also works.
- Android:
- exif-eraser is a great opensource metadata removal tool for Android devices.
- There is an easy-to-use app called Photo Metadata Remover that I would recommend.
- iOS:
- The recommended app for iOS users for metadata removal is called Meta Remove.