By Joshua Behar
At a news briefing in 2002, then U.S. Secretary of Defense Donald Rumsfeld, famously broke down threats into three categories of “knowability”: “Known knowns,” are the threats we are fully aware of; “known unknowns,” are the things we know we don’t know; and finally, the “unknown unknowns” – those threats that we don’t even know we don’t know.

Please register to continue.
Already registered? Log in.
Once you register, you'll receive:
-
News analysis
The context and insight you need to stay abreast of the most important developments in cybersecurity. CISO and practitioner perspectives; strategy and tactics; solutions and innovation; policy and regulation.
-
Archives
Unlimited access to nearly 20 years of SC Media industry analysis and news-you-can-use.
-
Daily Newswire
SC Media’s essential morning briefing for cybersecurity professionals.
-
Learning Express
One-click access to our extensive program of virtual events, with convenient calendar reminders and ability to earn CISSP credits.