Open Source Intelligence OSINT Training by Michael Bazzell
inteltechniques.com
Go check out this guy's book on just that, it's very comprehensive and easy enough to read for what it is. If anything it's a good first step into the world of avoiding tracking and minimizing your online footprint.
If you don't want to visit the site, look up "Michael Bazzell" book. If you don't want buying that book to be tied to you, go to a local bookstore and ask them to order it for you and pay for it in cash.
It's a lot of work and a lifestyle but I think it's worth it but I have a hard time finding people in the real world who agree with me.
edit: I don't think he mentions this in his books, but regardless of if you want the book or not, your very first step needs to be to identify every account you've ever created and still have access to.
If you still have access to your emails you've made in your life then you can almost definitely recover most accounts and then go in there. Off the top of my head here's a quick guide on your beginning based off of my experience.
- Write down all of your emails that you have access to (probably in a spreadsheet)
- Identify every account that is tied to each email
- I recommend you use an email client like thunderbird to just mass download all of your emails and then use it to search them all at once and delete EVERY email you no longer need or at least store them offline for later parsing. Makes this easier.
- Line up every single account you have and categorize them if you'd like.
- Identify accounts you no longer need and make a note to delete them.
- Log into the accounts you will be deleting first
- Change every field that has any potentially identifying information (overlapping account names for example) to something completely false.
- Wait a day for their databases to update
- Delete the account (now even if they don't actually delete it, their info is wrong)
- Now you should have a much more manageable list of accounts you want to keep.
- Create new emails for them. Try not to use gmail, hotmail, yahoo, w/e. Proton is free and easy and shouldn't be able to skim your emails so I'd recommend it.
eg (KiwiUsername.gaming@protonmail.com)
- Now when you go through these accounts decide if you actually want to keep them or not, and if you really want to keep them, assign them to that new email.
- Update any information with false info. (An alias may be helpful but that's up to you)
- Ask yourself what that service actually needs to function. Almost none of them actually need your real name or phone number.
- Delete any you no longer need (I recommend all social media)
- Change the password to something unique and strong. KeePass may help you here.
- Maintain a list of all accounts and their information going forward. An encrypted spreadsheet could be used and you can do that using Veracrypt
That's wordy but I'm lazy you can break it down for the sake of brevity on your own. If you use Windows 10 just go ahead and give me your real name because it's basically giving Microsoft the keys to your computer, any file not encrypted I would deem skimmed by Microsoft already.
ps all of those sites like spokeo, whitepages, peoplefinder, etc etc are technically supposed to comply with takedown requests. I recommend you create a list of those as well and then devote some time each weekend or devote 1 Saturday to finding all of your pages or anything close to identifying you and then requesting it be taken down. Some of them have forms for it, many of them require you email.
Remember who you're dealing with here, these are data collators and their business is to remember everything, so use a throwaway email for this that you will just toss aside later.