7 Crucial Steps to Take After a Credential-Based Cyberattack

TL;DR

Credential-based attacks are a significant threat, accounting for nearly half of all data breaches. This article outlines seven critical steps to take after such an attack, including scanning Active Directory for compromised passwords and implementing proactive security measures. Learn how to safeguard your organization effectively.

Introduction

In the evolving landscape of cybersecurity, credential-based attacks have emerged as a prevalent method for hackers to infiltrate systems. Unlike traditional hacking techniques that involve exploiting software vulnerabilities, these attacks leverage stolen user credentials to gain unauthorized access. According to recent reports, nearly half of all data breaches are attributed to compromised credentials¹. This underscores the critical need for organizations to bolster their defenses against such threats.

Understanding Credential-Based Attacks

Credential-based attacks exploit usernames and passwords to gain unauthorized access to systems and data. These attacks are particularly dangerous because they bypass many traditional security measures, allowing attackers to move laterally within a network undetected. Common methods for obtaining credentials include:

• Phishing: Tricking users into entering their credentials on fake login pages.
• Malware: Installing keyloggers or other malicious software to capture login information.
• Brute Force Attacks: Using automated tools to guess passwords through trial and error.
• Credential Stuffing: Using previously breached credentials to gain access to other accounts.

7 Steps to Take After a Credential-Based Cyberattack

1. Contain the Breach

Immediately isolate affected systems to prevent further unauthorized access. Disconnect compromised accounts from the network and reset their passwords.

2. Identify Compromised Credentials

Scan your Active Directory for compromised passwords using tools designed to detect weak or breached credentials. Regularly update your password policies to enforce stronger authentication methods.

3. Implement Multi-Factor Authentication (MFA)

MFA adds an extra layer of security by requiring users to provide additional verification beyond just a password. This significantly reduces the risk of unauthorized access even if credentials are compromised.

4. Conduct a Thorough Investigation

Perform a comprehensive audit to understand the extent of the breach. Identify how the attackers gained access, what data was compromised, and any other systems that may have been affected.

5. Notify Affected Parties

Inform all stakeholders, including employees, customers, and partners, about the breach. Provide clear instructions on how to protect their accounts and monitor for any suspicious activity.

6. Enhance Security Measures

Strengthen your security posture by implementing advanced threat detection systems, regular security audits, and employee training programs focused on cybersecurity best practices².

7. Prepare for Future Threats

Develop an incident response plan that outlines steps to take in the event of future attacks. Regularly update this plan to address emerging threats and ensure all team members are well-prepared to respond effectively.

Conclusion

Credential-based cyberattacks are a growing concern for organizations worldwide. By taking proactive measures such as scanning for compromised passwords, implementing MFA, and enhancing overall security protocols, businesses can significantly reduce their risk of falling victim to these attacks. Staying vigilant and prepared is key to safeguarding sensitive data and maintaining trust with stakeholders.

References

1. BleepingComputer (2025). “7 steps to take after a credential-based cyberattack”. BleepingComputer. Retrieved 2025-04-18. ↩︎

2. Microsoft (2025). “Best Practices for Cybersecurity”. Microsoft Security. Retrieved 2025-04-18. ↩︎