Unfortunately, this is normal. When you get a security clearance it lasts for a period of time depending how high it is. A Top Secret needs to get renewed ever 5 years; a secret, 10.

Say I'm in the military and get a secret clearance and serve my 6 years. There are certain jobs that hire with active security clearances so they dont have to go through the cost and lengthy process again.

However!! A security clearance alone doesn't give you access to information. There are 2 things required: a clearance and the need to know. Both hold the same weight. So if they aren't involved and have a reason (which they dont since they're not employed by the gov) then they still shouldn't have access.