check the latest HWInfo application, it shows mem temperatures now for the 3090s..

mining software is pretty much always detected as malware/troje. making sure the source you download from is good it the only way to make sure its ok/source code. i use awesome miner and have had no issue so far over 4 years.

you need to make sure the windows AV  exceptions are set correctly to ignore it

they need to stop newbie accounts from posting links..