"Since Sysinternals were bought by Microsoft many years ago and the tools are distributed directly via Microsoft, such tools are unlikely to have an issue being signed."
It's a damn shame that Russinovich sold out to Microsoft as that broke Sysinternals' independence. It seems clear to me that Sysinternals was getting a bit too clever for Microsoft's liking and by buying Russinovich out then meant that it could control the process. Likewise, Process Explorer is being silenced for similar reasons, and denying certificates is obviously cheaper.
It's a damn shame that Russinovich sold out to Microsoft as that broke Sysinternals' independence. It seems clear to me that Sysinternals was getting a bit too clever for Microsoft's liking and by buying Russinovich out then meant that it could control the process. Likewise, Process Explorer is being silenced for similar reasons, and denying certificates is obviously cheaper.