The first question most people ask about domain security is which domains to register. The more useful question is why, because the answer to why determines which ones actually matter.
Domains registered under your name can be used against you in a number of ways. Domains registered under your name can be used to publish false information, run phishing operations, or host content designed to create confusion about your identity and professional positions. In more serious cases, they have been used as leverage in extortion attempts directed at public figures and journalists, with the domain held as a threat rather than actively used. The domain itself becomes the instrument of pressure.
What to register
Start with firstnamelastname.com. This is the most valuable piece of digital real estate under your name. After that: .org, .net, the relevant country extensions for where you live and work, and the hyphenated variant first-name-last-name.com. The reversed version, lastnamefirstname.com, is worth checking and often overlooked. The goal is not exhaustive coverage. It is owning the most credible versions of your name online.
What not to register
Adversaries get creative. yourname-team.com, yourname-careers.com, yourname-official.com, the variations are endless and impossible to fully block. Trying to register all of them is expensive, largely futile, and misses the point. The correct response is not registration. It is building a strong enough online presence that these domains carry no weight. And when enough of them accumulate, a single UDRP proceeding can address multiple at once. At more than ten domains in a single case, pricing is negotiated directly with WIPO.
Social handles
Register your name on Instagram, Facebook, LinkedIn, X, and Reddit, not necessarily to use them all actively, but to prevent others from using them to impersonate you. For handles registered purely defensively, keep them in a separate mailbox with its own password manager entry, clearly labeled. They do not need regular attention. They just need to exist and be accounted for.
Own your domains directly
Domains must be on your own accounts, not those of an agency, a manager, or anyone else. Shared access to registrar accounts is a risk. For most people, one registrar is sufficient. Namecheap covers the majority of common TLDs. For country-specific domains with particular requirements, or for anyone who prioritizes data protection at the registrar level, a European provider based in Germany or Switzerland offers stronger privacy protections by default.
The trademark connection
If you ever need to recover a domain through a UDRP proceeding, you will need to demonstrate rights in the name. A registered trademark is the clearest way to establish this. Common law rights can sometimes substitute, but they are harder to argue and less predictable in outcome. Registering a trademark on your name early removes that uncertainty. The classes most relevant for a personal brand covering consulting, publishing, and media are typically 35, 41, and 42.
Cycle through it once or twice a year
Domain security is not a one-time task. Registrations expire. New variations appear. Once or twice a year, run through your registered domains, check what is expiring, and do a basic search to see what else is out there under your name. Combined with Google Alerts and Talkwalker Alerts set to your name, you will catch most new developments without having to actively look for them.