thanks for your answer.
but, there are malware that have digital signature and the digital signature is in Comodo's trusted vendors list.
for example :
digital signature of staxnet is Realtek Semiconductor Corp
and Realtek Semiconductor Corp is in Comodo's trusted vendors list.
please check it.
So you're worried about digital signatures which are safe at this point but may be dangerous in the future. I agree. This is a worry of mine as well. It's for that reason that I made this wish
Please let me know what you think of it.