You're not attacking the lock, you're attacking the entire security surface. - Is there any obviously exploitable flaws within the security surface? (under-door exploits, latch slipping, REX triggering, etc) Exploit them for the cost of a drink can or a piece of paper, or a $50 tool on Aliexpress. - Is the lock high security with anti-drill pins? Cut the lock away from the door. - Is the door stainless steel clad? Cut out the hinges. - Is the entire door stainless steel? Cut out the frame. - Is the entire door assembly stainless? Find a connecting wall and cut it out, or just break through the drywall or the false ceiling. If your goal is to get into a secure area by any means necessary with no regard for signs of intrusion, there's very little that can stop you, even with consumer-level tools. And if their gear is completely secured within a bank vault or similar, you can fuck with them even more by firebombing power feeds, fiber lines, and A/C units (dumping iron filings into a ducted A/C system is a great way to destroy electronics). Removing their ability to get to their gear is almost as valuable as getting that gear for yourself. Plus if you've got a couple of grayhats or blackhats, you could even exploit the security software they use. Bottom line: if you've got physical access, there is nothing that can stop you from disrupting service.