Who is "they"?

The director of the CIA sending sexts (and as it later turned out, classified materials) to his mistress.

https://en.wikipedia.org/wiki/Petraeus_scandal

He was fired the day after it reached Obama's desk, and eventually got a slap on the wrist and two years' probation.

Thanks for the link! It looks like this affair over webmail sparked a lot of investigation and resulted in a firing, two years probation, and a $100,000 fine. That sounds like a great start for this kind of thing and they were just talking dirty, not actively sharing mission details!

Overall, yes let's please investigate and appropriately punish wrongdoing at all levels.