Of course cybersecurity can be solved... the solution was worked out in the 1970s, and there are commercially available secure systems. The Operating Systems most of us use daily, on the other hand, do not support multi-level security, nor the Bell-LaPadula model.<p>If we did use such systems, the user interface would be almost identical, but our applications would only be able to open the files we fed them, and not everything, by default. The world would be a much more secure place, but that would have made the NSA's job a lot harder, so such systems aren't talked about much.