Basically they're warning the public to stay away from C and C++ for security reasons. I know QB64PE ain't C, but because it uses a C compiler as part of its tool chain, people who use QB64PE at work at a bigger security-conscious company might find the IT department locking things down (like they always do!) so just a heads up! You might want to proactively contact your IT group and let them know why they might find minigw on your system, and provide them the info they need to allow you to keep it on your machine. The QB64PE devs might be able to tell us if QB64PE using minigw opens it up to the kinds of memory exploits that programming directly in C/C++ might, and if not, explain why, so anyone affected knows what to tell their IT dept. They've been limiting our tools and options forever, and each year it's more and more, thanks to those pesky hackers, and it's damn annoying! (But maybe better annoying than being the guy who gets blamed for the next big security breach, right?) Anyway I hope this helps!
The NSA list of memory-safe programming languages has been updated
The NSA list of memory-safe programming languages has been updated