The official website has a Doc tab that gives some documents to check integrity of wallet and verify it.
Verify the integrity of your software
When installing the wallet, you may choose to download the package from the official clearnet or the tor hidden service , or to compile the source code from the official GitHub repository Please verify the signatures after completing downloads. The concern here is that you may accidentally fall for a phishing attempt and be on a malicious site downloading a malicious piece of software.
How can I verify PGP signatures
On the WasabiWallet.io
website you can download the packages of the latest release. Make sure that in addition you also download the separate signature .asc file. In the terminal, change the directory to the one with the downloaded files, and verify the signature with gpg --verify Wasabi-1.1.11.1.deb.asc. Everything is valid if it returns Good signature from zkSNACKs and that it was signed with the Primary key fingerprint: 6FB3 872B 5D42 292F 5992 0797 8563 4832 8949 861E.
For an in-depth guide for Debian and Ubuntu, other Linux, Windows, and macOS see the main documentation.
Some topics on phishing
What to do to avoid phishing sitesHost-file to deal with phishing sites