WordPress has historically been a security nightmare.
Possibly there was a tone of anger in the way PravlageTiem expressed themselves, but the security flaws in WordPress are worth discussing any time that WordPress is discussed.
Certainly, when I have a freelance client, and they ask me "Should we use WordPress?" I typically answer with some long version of "It has a good admin section for non-technical users, and also designers love it, but it also has a lot of security flaws."