Until this week, Apple's browser didn't offer a sandboxed Flash player, while Internet Explorer, Firefox, and Chrome did.
Earlier this week, Apple announced it would make its new OS X Mavericks 10.9 operating system available as a free download through the App Store.
Mavericks, named after a popular surfing spot in Northern California, isn't exactly a sweeping overhaul of the hallowed Apple OS, but it does include a rejiggered Calendar, an improved iBooks application, multiple-display support, and a spruced-up Safari. And part of that new Safari experience is a sandboxed version of Flash, the popular multimedia player.
What is sandboxing, exactly? Well, in tech terms, it refers to protections that wall off the rest of the system from damage from potentially untrustworthy content. Adobe already offers a sandboxed Flash player on the Internet Explorer, Firefox, and Chrome browsers. But until recently, Safari was left out of party.