Should TorBrowser users be concerned about these claims made by kaspersky?
We came across a number of clipboard injection attacks targeting cryptocurrency users multiple times. We look at how these attacks work and why they are dangerous.
Information theft or ‘clipboard injector’ attacks against cryptocurrency users
Source: ( Inyector para el portapapeles que se propaga como si fuera Tor Browser | Securelist )
If users download Tor Browser binaries from trusted source, then no problems.
If users prefer to obtain it from random places on the internet, then yes, they should be concerned.
If you download the Tor Browser from the official website you should be safe. For additional security, check the signature of the downloaded file: How can I verify Tor Browser's signature? | Tor Project | Support