My view is that job security is your ability to get your next position. Any given job can blow up on you for reasons beyond your control. You have to continuous

My view is that job security is your ability to get your next position. Any given job can blow up on you for reasons beyond your control. You have to continuously push yourself so you can easily pick up the pieces if/when that happens. But 2008-11 was a formative experience for me, so maybe I'm just bitter. Same with the dotcom crash. Those with sharp technical skills soon found work with old-skool companies when the dotcoms evaporated. The others struggled for a long time after.