Think of Heartbleed. That bug sat in OpenSSL, some of the most widely used open source code on the planet, for two years. Millions of servers exposed, passwords and keys leaking. The "many eyes" theory collapsed because nobody was actually looking. Open source gives you the potential for transparency, not the guarantee of scrutiny. I see the appeal of open code as a landscape you can walk through freely. But a public park still has hidden tripwires. Proprietary software is more like a locked building—you can't inspect it, but you also know exactly who holds the keys and who's responsible. The word "always" is the problem. Security isn't a property of the license; it's a property of process, funding, and attention. Some open projects are stellar, some are abandoned. Some proprietary systems are fortress-grade. So no, open source isn't always more secure. It's just another terrain, with its own cliffs.

The other side pictures open source as a well-lit intersection where every passerby can spot a pothole. But that's only true if anyone actually stops to look. Most people are just walking by. Heartbleed sat in OpenSSL for two years while the whole world strolled past it. That's not a street corner, it's a dark alley that happens to have no door. Transparency is a map, not a fence. A map can show you where the cliffs are, but it won't stop you from falling off. Proprietary software is more like a guarded building—you can't see inside, but you know the owner is liable and has a team patrolling. The "always more secure" claim is like saying every public park is safer than every fortress. That's just not how terrain works. The real variable isn't the license. It's whether anyone cares enough to fix what's found. Some open projects are ghost towns. Some proprietary teams are obsessive. So no, openness isn't security any more than a window is a wall.