I think a lot of the posters are missing the point of security upgrades. Security is not about keeping determined attackers who have time and access out. That can't be done. With a determined attacker who has the freedom to sit there and work on your security, they WILL get in and it doesn't matter how DoD-like your facility is.
What security upgrades do is to buy time, make noise, and make the insurance happy after your stuff has been stolen.
The second part is the one that catches a lot of people out. Insurance payouts now are largely dependent on the initial police report citing signs of forced entry. If you're using a normal lock and the perp bumps it open, or if you're using a normal strength door and the perp just shoulders the jamb hard enough to flex it and get the dead bolt out, it'll look to the cops like you either didn't lock the place or you "stole" your own stuff. The insurance won't pay out. For this reason, it's important to use locks that don't have braindead simple attacks that leave them looking undamaged. The only two locks I'm aware of sold in the US that aren't stupid-easy to open are the Abloy Protec2 and the BiLock model line. You'll pay upwards of $150 to as much as $250 per lock for them but literally everything cheaper has at least one way you can be through the lock in under 5 seconds without leaving any visible damage. To someone watching the perp enter your door, it just looks like he walked up and used the key to get in. Same idea with reinforcing the securing of the door. My Mom's house uses a door set between 2 window lights on either side of the door. The "jamb", such as it is, is just a 2x6 running vertically on each side of the door. The area the lights go into is just a piece of insulation foam with a 22 gauge sheet of metal on each side. When she locked herself out, I just came over and put my back against one side and pushed hard on the other. They spread away from each other and the door swung open. The insurance wouldn't pay out after an attack like that either, since there was no evidence of damage.
The other purpose of security upgrades is to buy time (for you, which equates to taking time away for them) and to remove the feeling of comfort they might have that they can just hang out there without attracting attention by forcing them to make noise. Buying time is important. At its most basic, if you're on the other side of the door being attacked, buying time allows you the chance to get armed, get your kids into shelter, and call 911. If the building is unoccupied, security can buy you time that either makes the perp get nervous about how long they've spent there or gives the police time to respond. Hardening the security also forces them to use tools that aren't as quiet as a bump key or a prybar. Harden things to the point that they have to use a battery powered angle grinder and they're going to be a lot less interested in doing that in the middle of the night in view of the street. Force them to break glass and that alerts you (which gives you time to get armed and safe) and may make them feel that they don't have as much time to loot your place. Breaking the glass rather than jimmying the lock also fulfills that insurance requirement for signs of forcible entry.
So, with all that wind out of the way, what am I doing?
Abloy Protec2 locks on all doors.
Door Jamb Armor (the serious stuff, not the easy to install stuff) on all doors.
No glass close enough to the deadbolt for someone to smash the glass, reach in, and throw the lock.
In the workshop where I'll never be inside with the door lock, the lock is also a double-deadbolt with no thumb lever on the inside (since that door does have glass in it)
TAPCO screens over all the windows (AWESOME products, check them out on Youtube) and French or Sliding doors.
At this point, I have forced them to break things to get in. Does that keep them out 100% for sure? Absolutely not. But I've forced them to do things that are noisy, may require tools, leave visible damage for the police/insurance, and are noisy enough to get through and take long enough to get through that it gives my wife and I the time to get awake, get secured, and call 911.
