It's a mess, and no operating system is immune. Most of the attacks are generated with software that's readily available on various hacker sites such as WarForge and CyberArmy . This is where teenagers go to grab a quick attack package to harass people who won't date them. I'd advise the computer-using public to become familiar with the thinking behind such sites and see for themselves the kinds of tricks the sites promote. Note, however, that only a few hackers are good enough to cover their tracks completely, and many attacks can eventually be traced to the originator.
Law enforcement has an interesting dilemma.
The presence of law enforcement patrols ups the ante. It's obvious that the second, lax approach, is in effect today. They key to stopping all this hacking is a massive worldwide sting. In fact, I suspect one is underway already, although I have no evidence of it. It's just a sense I have.