I have said it many times: The internet is used for stuff which it is not capable of handling (securely).
What Does This Mean? Is My Data at Risk?
The threat actor may attempt to use brute force to guess your master password and decrypt the copies of vault data they took. Because of the hashing and encryption methods we use to protect our customers, it would be extremely difficult to attempt to brute force guess master passwords for those customers who follow our password best practices. We routinely test the latest password cracking technologies against our algorithms to keep pace with and improve upon our cryptographic controls.
The threat actor may also target customers with phishing attacks, credential stuffing, or other brute force attacks against online accounts associated with your LastPass vault. In order to protect yourself against social engineering or phishing attacks, it is important to know that LastPass will never call, email, or text you and ask you to click on a link to verify your personal information. Other than when signing into your vault from a LastPass client, LastPass will never ask you for your master password.