Paranoia is definitely building. Awareness of how exposed people are is building. Yet, exposure is going up not down. People are posting more stuff online. I wonder if, for example, the cloud hack has impacted the trend of people taking nude picture at all? I suspect it hasn't. I suspect that none of these leaks will impact user behavior.
On one hand, a leak of an Ashley madison profile or salacious photos makes people aware that the danger exists. On the other, it confirms how widespread and normal it is to do these things.
Here's my (soft) prediction: Norms concerning fidelity and/or modesty will give before online behavior does. If the choice is stop sending nudie pictures or stop getting embarrassed when they leak, we'll go for the latter. For infidelity… maybe strict monogamy will soften as a norm.