Several community-developed tools offer similar functionality to UMT's converter and editor features without a subscription fee:
Account security is no longer a joke. While phishing still exists, the "session token stealer" malware that spread via Discord and shady mod sites is effectively dead. Even if a token is stolen, the combination of hardware binding and rapid expiration makes it useless. Your Minecraft account is now as secure as your Microsoft 365 login.
with a reputable antivirus like Malwarebytes or Windows Defender. Change your passwords