Nearly every phishing story starts with somebody looking for an address during an outage. Saving them properly is the cheapest defence there is.
nexusb2l7fmqnefwphyy7m5zjhlkytlbo7qbb5lu5dlczr3azgii2gyd.onionnexusma2iqgauqqvjcgds4ckv5xbf272tkfagq4epojjhsgleqpwxiqd.onionnexusabcd6tyfhdwilyitaqiri6tisj2v2hueyjuj6qkvd6azvi5tuqd.onionThis step takes three minutes and prevents the single most common way people lose an account. It is worth more than most of the technical advice on this site.
A familiar address goes quiet. Somebody wants in, opens a search engine, and takes the first plausible result. That result is a copy of the market that exists to collect passwords, and it ranks precisely because nobody looks for a market address until they are anxious and in a hurry. Having the list already in front of you means that moment never arrives.
Anywhere that syncs to a service under your name. A note application that backs up to a cloud account attaches those addresses to your identity, which is a strange thing to do deliberately.
The whole value of the list is having somewhere to go when one address is quiet. Saving one address recreates exactly the problem this step exists to prevent.
Addresses do change. Comparing your saved list against a published one from time to time takes seconds, and doing it while everything works is much safer than doing it in a panic.
Username, password, recovery phrase and two factor. Ten minutes at the start that decide what a leak elsewhere costs you later.
What to do in what order the first time you open a Nexus address, including the one check that has to happen before you type anything.
Where to get Tor Browser, why the source matters more than the version, and the mistakes that put a modified copy on a machine.
The full Windows route to a Nexus onion address, what the operating system keeps behind your back, and the settings worth changing before you start.
DesktopHow to get to a Nexus onion address on a Mac, the Gatekeeper prompts you will meet, and which macOS conveniences work against you here.
DesktopThe Linux route to a Nexus onion address, why the distribution package is usually the wrong choice, and what a sensible setup looks like.