The world has gotten a lot more dangerous than people realize. People generally quite correctly assume that hackers aren't going to spend person-months attacking their system personally but don't realize that the attacker tools are quite sophisticated now and they don't have to. Shoving code into a small little buffer overflow to lift to a larger buffer overflow to load exploit code over the network that will run a pre-packaged root priv escalation to install a rootkit to add them to their botnet is no longer the work of a team of hackers for months. It's all off-the-shelf tech now and it's more like writing a 20 line function now; you don't need to attract very much attention now to attract that level of sophistication.
We are leaving C behind collectively for very good reasons. If you are playing with C and you do not intimately understand those reasons, you're going to relearn them the hard way.