The Danger of Obvious Passwords: Lessons From the Louvre

Brooke Fossey

17 November 2025

Hiding in Plain Sight: Why the World’s Worst Password Strategy Threatens Your Digital Fortress

We’ve all heard the phrase, “The best place to hide something is in plain sight.” In fiction, this is the hallmark of a clever mastermind. In cybersecurity, however, it’s not a genius strategy, it’s a catastrophic error. When it comes to digital defence, hiding in plain sight is merely an open invitation to every opportunist and attacker.

The recent security blunder at one of the world’s most renowned cultural institutions provides a cautionary tale that highlights just how dangerous this approach can be for your business’s security posture.

The Painful Irony of the Louvre

The details are almost unbelievable. A post-heist report into the security procedures at the Louvre museum in Paris revealed a shocking finding: the password for its video surveillance system was, wait for it, 'LOUVRE'.

The irony is painful. A museum entrusted with protecting priceless artworks like the Mona Lisa failed to protect its own surveillance systems with even a rudimentary password. As one social media commenter rightly pointed out, that’s “basically one step above ‘password’.”

The problem didn’t end there. The report found that the password for another critical piece of software was 'THALES', the name of the company that supplied the software. This is “hiding in plain sight” taken to an absurd, negligent level, using the most obvious, instantly guessable word tied directly to the system or the organisation itself.

Why Obvious Passwords Guarantee Failure

The reason this strategy fails so spectacularly is simple: attackers don’t need to guess randomly. They employ a method called a dictionary attack.

A dictionary attack involves a sophisticated programme cycling through a predefined list of common words, names, places, and, yes, the names of every major organisation, landmark, and software provider. When your staff use 'LOUVRE' or 'THALES', you are not making an attacker work for it; you are instantly ticking off the most obvious entries on their list.

To illustrate how quickly this “hiding-in-plain-sight” method fails, consider the world’s most common passwords. Year after year, the same simple credentials dominate the list of those most frequently exposed in data breaches and instantly crackable by hackers. The top offenders include the basic numeric sequences 123456, 123456789, and 12345, along with the classic dictionary word password and the keyboard sequence qwerty.

Using any of these is the digital equivalent of leaving your house key under the doormat. Automated tools can often crack them in less than a second, rendering your security non-existent.

Cybersecurity advisor Javvad Malik notes that such weak passwords suggest a broader issue: “It’s not a policy gap, it is an invitation, serving as an indicator that the overall culture of security may be weak.” If systems safeguarding your business’s crown jewels rely on guessable credentials, you are leaving your digital front door wide open.

The Solution: Obscurity, Not Obviousness

Your business’s digital assets deserve far better than a simple, visible password. A truly secure password must be one that is virtually impossible to link to your business, your staff, or the system you are accessing. It needs to be a unique, complex key, not a common phrase that a basic software programme can try in milliseconds.

Ditch the “hiding in plain sight” cliché and focus on complexity and obscurity. Here are the fundamental rules for strong password creation that your team must adopt:

  • DO use a combination of numbers, symbols, uppercase, and lowercase letters.
  • DO ensure your password is at least eight characters long. The longer, the better.
  • DO NOT choose a commonly used password like '123456', 'password', or 'qwerty'.
  • DO NOT use a solitary word or any derivative of your name, family, pet, address, or the name of the program or organisation you are logging into.

Don’t let your password be the weakest link in your defence. Take the time to implement strong, non-obvious credentials across your business. Your peace of mind, and your valuable data, depends on it.

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