You get an alert. Your company's credentials are on the dark web. What do you do?

Credential leaks are more common than people think, and your initial reaction matters the most. It should be fast, but steady and sure. No hesitation, no chaos. Just focus and a good plan to remediate and recover.

Let’s explore the 5 needed steps to navigate a credential leak with confidence!

Step 1: Detect the leak early

In the world of leaked info and dark web, time is your most precious currency. The earlier you detect a leak, the less damage it causes to your organization.

The damage can be really paralyzing, and costs a fortune, especially within sensitive sectors like banking. That undetected window of time can be dramatically fast, attackers sell access, move laterally, exfiltrate more data, and become harder to track and stop.

Defendis, as a CTI platform, helps you monitor the dark web for your domain and stay on top of any breach. It provides you with the full scenario of when and how it happened, and guides you to your next action. With its full reports, early detection becomes straightforward.

Step 2: Act Immediately, Have a Plan Ready

The main factor of reaction success is having an established, well-prepared incident response plan beforehand.

A good plan helps you map directly the path to recovery, what assets to check first, who are you calling, and how to collect evidence for legal and growth purposes. The process becomes automatic, with no chance of confusion or frustration.

Many companies fell victim to attacks, proving the point of IR plan importance, such as Uber. A breach happening in 2016 and affecting data of around 600,000 drivers in the US and 57 million Uber users around the world. The leak itself came from a poor credential management on GitHub and AWS but it reveals more than the vulnerability. The breach wasn’t disclosed immediately, attackers were paid thousands of dollars to delete the data, and the whole incident was hidden for quite some time.

The process has clear signs of fast non-precise decisions. With that being said, prepare your plan on time to avoid this pain.

Step 3: Assess scope & contain

Now that we know the leak is happening, and we have a map of important and urgent actions, we look closely at the scope of the leak.

Decide what was leaked, define the affected systems, and move to containment. While how you contain depends on the type of the leak, it generally includes:

• Isolating affected systems: The first reflex to cut off access before attackers do more damage, every compromised system is an open door welcoming more attackers in.
• Revoking credentials: Whether it’s passwords, API keys, exposed bank account details, they should all be revoked immediately with no exceptions.
• Forcing resets: Part of the IR plan is a password reset policy, that forces users to change their passwords when there is evidence of compromise.
• Killing active sessions: Closing the gap of attackers still having access, all across devices and browsers.
• Documenting evidence properly: Logs, timestamps, and access records are very important for the next step.

Step 4: Investigate the source

Stopping the damage and containing the risk is not the end of the mission. An even more important step is investigation, to understand what went wrong and what should be improved.

Gather your team and go through these:

• What was the entry point? (phishing, reused password, insider, third-party vendor?)
• How long were the credentials exposed before detection?
• Were they actively exploited, or just sitting in a database?
• Did the attacker move laterally after gaining access?
• Are there other credentials that may be exposed but not yet found?

Some of the most security-mature companies today had a major incident in their past, but instead of breakage and failure, they treated it as a turning point. And a breach that’s properly investigated tells you exactly where your defenses were weak, better than any theoretical consultancy.

Step 5: Install Modifications for Long-term Hardening

As mentioned, the breach should be a turning point. A pause and reflection to build stronger foundations for what’s coming.

• Embed a security-first culture that’s easy to implement and doesn’t affect productivity
• Implement Zero trust across all interactions and third-party monitoring
• Raise cyber awareness and improve internal training, as most leaks start with a human factor
• Prepare for credential attacks, they’re growing fast, and you have to be faster. The new era of threats with leaves no room for weakness.
• Always monitor the dark web, not only when something goes wrong. Defendis will help you do exactly that. Book your demo to know more!

In a nutshell

You get an alert. Your company's credentials are on the dark web. Now you know exactly what to do.

A credential leak is never the end. Sometimes, it’s the start. It’s a full test that puts your systems under pressure to evaluate your readiness and cyber-maturity. So stay prepared and protect what matters.

Stay close for more cybersecurity guides to sharpen your security posture.

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