There was an inverse problem with a language called Clojure that had all of these security features built in.

Because the programmers believed that everything was secure by default, they were naive and programmed without even thinking about security which left sites coded by these people vulnerable to all sorts of vulnerabilities that went out of date a decade ago - cross site scripting and SQL injection attacks were very commmon.

If you know your language doesn't care about security and does exactly what you tell it to, then you worry yourself sick over security and actually do a good job. Sometimes.