Many years ago it was BBS systems and then as Windows took off it became SMB shares, fun times for sure. It then transitioned to databases open and exposed to the WAN and once those admins became educated the targets were RDP clients that were poorly designed, radmin anyone? Everything to this point led to the Payment Card Industry (P.C.I.) founding as losses accrued and blame assignment for cost absorption was needed. As APIs took off, where we are now, the era of data vacuuming everything insecure continues inclusive of AWS. The future however will redefine what it means to build secure software from day zero as IoT devices that control life and property will continue to grow in popularity as well as attack. Industrial, commercial and residential targets grow by the day such as SCADA, lighting control, hot water tanks, faucets, toilets and all the other devices that will become smart in one's life but I would be remiss to not mention the most important items that will enable remote life manipulation, medical devices. What you cannot see matters most and as connectivity of everything grows exponentially one is likely to not even see it coming. Stay Healthy!