Why WalletConnect Is Strengthening Wallet Authentication
A common misconception: Many people think WalletConnect is just a QR‑code tool to connect to a DApp, and once connected it's done. In reality, the connection is only the beginning — the real security issues unfold in every signature request that follows. WalletConnect has been aggressively strengthening wallet authentication over the past couple of years, not because connections fail, but because after connecting, wallets cannot confirm whether the DApp on the other end is real or fake.
Core Contradiction: The Connection Is Real, but the Website Could Be Fake
WalletConnect works by establishing an end‑to‑end encrypted communication channel. Wallets and DApps exchange messages through a relay server. The problem: at the moment of connection, the name, icon, and domain information shown to you are all provided unilaterally by the DApp. The wallet has no way to verify the authenticity of this information.
What does this mean?
You scan a QR code and your wallet pops up "Connect to Uniswap". But you are actually on a phishing site that disguises itself as Uniswap and initiates a WalletConnect connection request. Your wallet shows "Uniswap", you tap "Approve", and the connection is established. Next, the phishing site sends a signature request — you think it's a Uniswap transaction authorization, when it may actually be transferring your assets to an attacker.
In October 2023, CertiK discovered an XSS vulnerability in WalletConnect's VerifyAPI. Attackers could exploit the flaw to forge verification pages, making users believe they were connecting to a trusted DApp. At the heart of this vulnerability is precisely the lack of a reliable way for both wallets and users to verify a DApp's identity.
What WalletConnect Did: VerifyAPI
What it does: WalletConnect launched VerifyAPI, offering proactive security enhancements for integrated wallets — when a user connects to a DApp, the target domain is examined and an alert is issued.
How it works: VerifyAPI uses WalletConnect's domain registry and Blowfish's domain scanner to vet connection requests. When a user attempts to connect to a DApp, the API returns the domain's security status, and the wallet then displays one of four statuses accordingly.
What counts as completion: Wallets that have integrated VerifyAPI clearly show the domain verification status on the connection screen — verified (green indicator), unverified (yellow warning), or malicious (red block).
Prerequisites: The wallet you are using must have integrated WalletConnect VerifyAPI. Some wallets have it enabled by default; others require a manual update to the latest version.
Common failure reasons: VerifyAPI itself was found to have an XSS vulnerability in 2023, where attackers could inject malicious scripts by tampering with JWT token values. Although WalletConnect has fixed the flaw, it illustrates that any verification mechanism can be bypassed. Risk reminder: Do not fully trust a counterparty just because the wallet shows a "verified" badge. Phishing techniques evolve constantly, and VerifyAPI results cannot guarantee 100% accuracy.
Basic Protection Users Can Implement
Previous content has mentioned the "three‑question" habit before signing. In the WalletConnect context, you can additionally adopt the following three operational norms:
Step 1: Verify the URL Before Every Connection
What to do: Before scanning a QR code to connect, verify that the website URL you are visiting is the correct official domain.
How to do it:
Manually type the official domain; do not enter through search engine ads or shortened links on social media.
When the connection popup displays a "DApp name", compare it with the domain in your browser's address bar.
If the connection request comes from a QR code, confirm that the source of the QR code is trustworthy.
What counts as completion: You can confirm that the DApp name shown by the wallet belongs to the same project as the URL you are currently visiting.
Prerequisites: None. This is a basic action anyone can take.
Common failure reasons: Attackers may register "impersonating domains" that look extremely similar to the official one (e.g., uniswap.xyz instead of uniswap.org), making them hard to distinguish with the naked eye.
Step 2: Proactively Terminate Idle Sessions
What to do: WalletConnect sessions remain active after establishment until you manually disconnect or the session expires. You have the right to revoke an established connection at any time.
How to do it:
In your wallet's "Connected Apps" or "WalletConnect Sessions" list, view all currently active connections.
For sessions you no longer use or that have suspicious origins, manually tap "Disconnect" or "Revoke".
What counts as completion: Your wallet's active session list contains only the DApps you are currently interacting with — no idle or forgotten connections remain.
Prerequisites: Know where to view and manage WalletConnect sessions in your wallet. The location is usually under "Settings – Connections" or the "WalletConnect" menu.
Risk reminder: If you once connected your wallet to a phishing site, even without performing any transactions, attackers could leverage that session to send subsequent signature requests. Disconnecting completely severs that channel.
Step 3: Stay Cautious When Operating on the DApp Side
What to do: A secure connection does not mean every step that follows is safe.
How to do it: After connecting, evaluate every signature request initiated by the DApp individually. Do not assume all requests are safe just because you "just connected". Every signature carries an independent risk — a single malicious signature authorization is enough to empty your wallet.
What counts as completion: Pause for 2 seconds before each signature and confirm that the action matches your current intent.
Confirm you have completed basic authentication protection: Open your wallet's connected apps list and disconnect all sessions whose origin you don't know or that have been idle for over 24 hours. Then, the next time you connect to a new DApp, develop the habit of checking the URL first and then reading the wallet prompts. This is not an optional step — it is the final gate that prevents your wallet from being drained the next time you scan a QR code.
