The recent House of Cards (S02E03) is actually refreshingly good. There are a holes that pretty much have to exist for plot but overall they actually talk about real things. Not random gibberish.

I don't think that any sane screenwriter would want to do hacking and security stuff seriously if they could - the pacing/dynamics of how hacking is shown currently is much better fit to what works in movies as narrative media; showing it realistically simply would generally hurt the movie and be unappreciated by the vast majority of viewers.

It's just as with any other time-consuming thinking activities such as invention/tech research; crime/plot investigation; medical diagnosis - they're much more successful when the screenwriters/directors misrepresent reality of 'how it happens', so they do so intentionally.

That's how that media works - if you want realistic portrayal of hacking and security, then it (just as many, many other topics) is quite suitable for a written narrative, but not really for a two-hour movie/30min tvseries format.