Iirc theyre these expensive discs that are highly resistant to disc rot (or something along those lines) for at least 1000 years. Kinda gimmicky tbh since it still needs to be stored properly to achieve that claim and suffers from the same problems as any other optical disc (the equipment needed to read and write and still durability)
Curious why M-disc specifically? Isn’t that storage media kind of expensive for the amount of storage space you get? Plus unless every disc is getting buried in a capsule, you would still have to baby it like any other optical disc even though its more durable.
For security: aegis (totp manager) , keepassxc/dx (password manager), veracrypt (local encryption) and cryptomator (cloud/mobile encryption). Thats it pretty much everythng else I use is more for privacy Edit: cant believe I forgot about ublock origin. it’s like a condom for the internet
Regardless of os full disk encryption is your friend and keep regular backups incase shit hits the fan. Rely on bookmarks as much as possible to minimize your chances of clicking on phishing links and stick to trusted sites. Lastly use a trusted vpn with a killswitch even if you dont think you need one it never hurts.