Exposed Credentials: A Critical Vulnerability Threatening Organizations
Exposed credentials are giving attackers a head start many organizations don’t see.
The Prolonged Threat of Exposed Credentials
Compromised credentials can persist in active use for extended periods, creating opportunities for malicious actors to exploit them before organizations detect the breach. A 2026 analysis by Enzoic highlights increasing recognition of this threat, yet many entities still lack effective mechanisms to monitor and respond to credential exposure.
Infostealer Malware and Credential Theft
Infostealer malware has emerged as a critical vector for credential theft, harvesting passwords, browser data, authentication tokens, and session cookies. Attackers can leverage valid session cookies to access accounts without triggering password prompts or MFA challenges, significantly reducing the window for response.
Key Findings from Industry Reports
A 2026 Verizon Data Breach Investigations Report found that 39% of organizations identified employee credentials in infostealer logs during the past year, while 43% either do not monitor such datasets or are uncertain about their monitoring practices.
Monitoring and Response Challenges
Proactive analysis of breach and infostealer data is essential to detect exposed credentials before exploitation occurs. Password screening processes often focus on credential creation or resets, neglecting later exposure through phishing, third-party breaches, or infostealer malware.
Limitations in Continuous Monitoring
Continuous monitoring of active credentials remains limited, with fewer than 20% of companies implementing ongoing surveillance and automated remediation for compromised accounts. This aligns with NIST SP 800-63B guidelines, which advise password changes upon evidence of compromise rather than fixed intervals.
The Role of Multi-Factor Authentication
MFA complicates the use of stolen passwords but does not eliminate credential exposure. Organizations report attack techniques that bypass or weaken MFA, including adversary-in-the-middle attacks, users without MFA, password fallback mechanisms, and credentials used before MFA challenges are triggered.
Effectiveness of MFA
Only 13% of organizations believe MFA sufficiently addresses credential exposure. Password fallback remains prevalent, with some citing MFA as sufficient protection, despite its limitations.
Coverage Gaps in Credential Monitoring
Credential monitoring efforts often prioritize workforce identity systems, leaving SaaS accounts, service accounts, machine identities, customer-facing systems, and third-party access with inadequate coverage. External identities also receive limited attention, creating additional attack paths with weaker safeguards against exposed credentials.
Organizational Responses and Future Strategies
In response, companies are increasing investments in credential security, planning to expand MFA, passwordless authentication, identity threat detection and response (ITDR), and compromised credential monitoring. However, responsibility for credential security is frequently fragmented across teams or lacks a defined owner, hindering integration and prioritization of automated credential abuse mitigation.
Conclusion
As threat actors increasingly exploit compromised credentials, organizations must adapt to close gaps in their defenses.
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