Serguey Asael Shinder – IT Professional

I once believed in the perfect wall. I’d built one strong defense at the front of a system, felt genuinely proud of it, and mentally checked the box marked “secure.” One excellent barrier, and I could rest.

The problem with one wall is the day someone finds the one gap. And someone did — not through the front I’d fortified, but through a seam I’d never reinforced because I’d spent all my attention on the main gate. Once they were past that single layer, there was nothing behind it. No second check, no limit on what they could reach. The wall had been everything, so getting over it was everything.

That taught me the idea that reshaped how I think about security: depth beats perfection. You will never build a flawless barrier, so stop betting the whole system on one. Build layers instead. Validate at the edge and check again deeper. Authenticate and also limit what each role can touch. Encrypt in transit and at rest. Assume any single layer will eventually fail, and make sure it doesn’t fail into open ground.

The goal isn’t a wall that never falls. It’s that when one falls — and one will — the next one is already standing, buying time, shrinking the damage, turning a catastrophe into an incident.

I don’t chase the perfect defense anymore. I build several imperfect ones and assume each will have its bad day. That assumption is the most secure thing I’ve ever done.

– Serguey Asael Shinder