How to permanently remove DDE Exploit:O97M/DDEDownloader.C? Do I need to nuke my computer? Is it safe to not do so? [duplicate]

1Starting yesterday windows defender has found and quarantined 5 copies (pic 1) of the following threat (pic2) Exploit:O97M/DDEDownloader.C see here.
I tried contacting Microsoft tech support but they were not helpful at all. The guy just … Continue reading How to permanently remove DDE Exploit:O97M/DDEDownloader.C? Do I need to nuke my computer? Is it safe to not do so? [duplicate]

After EOL, can safety-critical systems be secured when connected to internet-connected components? [Automotive]

NOTE: This was originally asked on the main StackOverflow site, but now moved here because of the security nature of the question.
Since internet-connected Infotainment Systems are now connected with other components of a car… Is it pos… Continue reading After EOL, can safety-critical systems be secured when connected to internet-connected components? [Automotive]

How can digital signatures assure the sender their message has been correctly received?

I am going through a short course on security. One of the videos is talking about non-repudiation in regards to cryptography and sending messages between Alice and Bob. This video talks about how digital signatures can be used to verify th… Continue reading How can digital signatures assure the sender their message has been correctly received?