Maybe make lecture about hardening

[ivafanas]

libc++ hardening:
https://libcxx.llvm.org/Hardening.html

C++26 std lib hardening:
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3471r4.html

C++ safe buffers:
https://clang.llvm.org/docs/SafeBuffers.html

+maybe pointers tricks from chromium