A C programmer reading this list knows exactly why they are there. It is not at all a controversial list.

Edit: I guess some down voter doesn't believe me but it continues to be true. They are all string functions. Most of them do not take an output buffer size, so a source string exceeding the destination buffer will overflow. Others, like strncpy, take an output buffer size but will not null terminate when exceeded, so the buffer size must be reduced by 1 by the caller and potentially manually terminates, which is too easy to not consider. But any C programmer with significant experience already knows these pitfalls. So it's not controversial.