10 Essential Security Practices for Web3 Users in 2026

If you're active in Web3, whether trading, building, collecting, or just exploring, attackers are looking at you. That's not paranoia. The business of stealing from crypto users has grown into a full-blown industry, and the tools and tricks attackers use have gotten a lot smarter over the past few years.

The good news? Most successful attacks follow a small handful of patterns. If you understand those patterns and build a few simple habits, you can dramatically lower your chances of getting hit. Here's the baseline our team recommends.

1. Assume someone is trying to trick you

The single best security tool you have isn't a hardware wallet or a VPN. It's the mindset that getting attacked isn't a question of if, but when.

Before you do anything unfamiliar, take a few seconds to ask yourself three questions:

• Who benefits most if I go through with this?

• Does what's being asked actually make sense for the situation?

• Is someone trying to rush me with a countdown, a "limited time" deal, or a fake emergency?

That last one is huge. Manufactured urgency is one of the clearest signs of a scam. When you spot it, slow down.

2. Reduce your online footprint

The more you're online, the easier you are to find and target. Every so often, do a personal cleanup: close old accounts you don't use, cancel forgotten subscriptions, check your cloud drives for files you've shared too widely, and delete old social profiles. It cuts your risk and usually saves you money on subscriptions you forgot about.

To find old accounts, try username search tools like Instant Username Search or Sherlock Project. Search your own usernames and aliases to dig up dormant accounts you've forgotten about.

3. Keep your Web3 identity separate from your real one

Being fully anonymous online is harder than ever, but using a pseudonym still helps a lot. Keep your Web3 presence on Twitter, Discord, and Telegram separate from anything tied to your real name. A determined attacker with serious resources can still piece things together, but you make it much more expensive and time-consuming for them to build a personalized attack against you.

4. Use login methods that can't be phished

Not all login methods are equal. Only the top two below are truly phishing-proof. They tie your login to the real website using cryptography, so a fake login page can't capture anything reusable. From strongest to weakest:

• Hardware security keys (like YubiKey): phishing-proof. This is the gold standard.

• Passkeys: phishing-proof. Strong cryptographic logins that work on more and more platforms.

• TOTP authenticator apps: can be phished, but fine if you don't have anything better.

• SMS-based 2FA: phishable and not recommended. SIM-swap attacks have cost people huge amounts of money.

If a platform only supports SMS for 2FA, that tells you something about how seriously they take security overall.

5. Never store your secrets digitally

You'll hear this advice a lot because people keep getting it wrong: don't put your seed phrase in a password manager. Don't keep it in a cloud-synced note, an encrypted text file, or a screenshot in your photo library.

Password managers were built to solve password reuse, not to guard the keys to your crypto. Infostealer malware can grab everything in your browser or on your hard drive, encrypted or not. Use a hardware wallet for daily activity and back up your seed phrase physically. Paper works; an engraved metal backup in a fireproof safe is even better.

6. Watch out for the fake video call scam

This one has been behind a surprising number of recent big-money thefts, even against people who normally have good security habits. It usually goes like this:

You get a Telegram message from someone you vaguely remember meeting at a conference. They want to catch up. A little embarrassed about losing touch, you say sure. They send a calendar invite. When the call starts, they say their usual video app is broken and send a different link. You click it and a video call opens in your browser. You can see and hear them fine, but they say they can't hear you. Then a popup asks you to install a plugin, or paste a command into your terminal, to fix the audio.

Run that command and your computer is fully compromised. Passwords, browser sessions, wallet files, all gone.

The rule is simple: never install anything or run any command to fix audio or video during a call. Real video platforms don't work that way. If a call won't work, hang up and reschedule through a channel you trust.

7. Take care of physical security and network basics

Stuff that's easy to put off until it matters:

• Avoid public Wi-Fi. If you have to use it, run a reputable VPN.

• Lock down your home Wi-Fi with WPA2 or WPA3 and a strong, unique password.

• Keep your router's firmware updated and the firewall on.

• Keep your devices in sight and on you when you travel.

• Turn on Lockdown Mode on iPhone and Mac if you think you're a high-value target.

• Don't plug in random cables, USB drives, or accessories. Cables that look normal but contain hidden hardware to compromise your computer are real and on sale.

• Don't wear clothes or accessories that scream "I'm into crypto."

• Be careful about posting photos that show where you are right now, since it tips off attackers.

8. Check what software you're trusting

A lot of recent hacks started with compromised software. Pay extra attention to:

Browser extensions. Fake wallet extensions show up regularly in the Chrome and Firefox stores. Even legit extensions sometimes get bought up by attackers and updated to push malware to existing users. Uninstall anything you're not actively using.

Mobile app stores. Fake wallets pretending to be the real thing have made it onto both the App Store and Play Store. Be even more careful with side-loaded apps and third-party stores.

"Sign in with Google/etc" prompts. Those single sign-on screens can hand third-party apps wide-open access to your files, email, and accounts. Review the apps you've connected from time to time and say no to anything that asks for more than it should.

Developer tools. VSCode and Cursor keep getting hit by waves of fake Solidity extensions, malicious task files, and password-stealing scripts. Don't run trading bots or build scripts without reading the code.

Package registries. NPM, PyPI, and Crates have all had recent supply chain attacks aimed specifically at Web3 developers. Use isolation tools like devcontainers and run something like Socket or Snyk in your workflow.

DNS and hosting. Real DeFi sites have been hijacked at the DNS or hosting level and pointed at wallet drainers. Use a wallet that simulates transactions before you sign and blocks known bad domains, and double-check official channels if something looks off.

9. Don't trust search ads or social media ads

Ad-based scams are one of the most successful attacks running right now. Attackers grab compromised Google Ads or Telegram Ads accounts, bid on popular crypto and DeFi search terms, and serve ads that show the real URL but redirect through a wallet drainer. Your habit of clicking the top result does the rest.

Bookmark the sites you use often. Type URLs directly. Run a good ad-blocker. When you do have to search, scroll past the sponsored results before clicking anything.

10. Read the SEAL guides

The Security Alliance (SEAL) keeps practical, up-to-date security guides for the platforms Web3 users live on, including Twitter/X, Telegram, Discord, Signal, and Slack. They're free and worth reading in full.

• Twitter/X Security

• Telegram Security

• Discord Security

• Signal Security

• Slack Security

Wrapping up

Web3 security isn't something you finish. There's no such thing as an unhackable setup. The goal is to be enough of a pain that attackers move on to easier targets.

Most of what's above can be done in under an hour. The seed phrase you back up on paper today, the SMS 2FA you turn off this afternoon, the bookmark you save instead of searching: small choices like these add up to a much harder target over time.