In the 1980’s the rock group The Who, had a hit song: ‘Who are You.” That was rock’n’roll, but what is happening now is a question of, “Is it Real, or is it Fake?” Who are You? In modern digital enterprises, the fastest-growing identity population is no longer human users; it is machine identity. APIs, microservices, containers, cloud workloads, CI/CD pipelines, robotic process automation, and AI agents all authenticate using identities. Each relies on credentials such as keys, certificates, tokens, or secrets to interact with systems and data. In large cloud-native environments, machine identities often outnumber employees by hundreds or even thousands to one.[1]
Yet most identity and access management (IAM) programs were never designed to govern this scale or type of identity. What exactly is machine identity?
A machine identity is any non-human entity that must authenticate to perform an action. Common examples include:
- Cloud service accounts
- Kubernetes workloads and pods
- API clients and integrations
- CI/CD tools and automation scripts
- Serverless functions
- AI agents and background services
Unlike human users, these identities:
- Operate continuously
- Authenticate non-interactively
- Cannot perform MFA challenges
- Are frequently created and destroyed automatically
Machine identities combine high privilege, low visibility, and weak governance, making them particularly attractive to attackers.
- Long-lived and hard-coded credentials. Many machine identities rely on credentials that:
- Are embedded in configuration files or code
- Rarely expires
- Are shared across multiple systems
Once exposed, these credentials may grant persistent access without triggering traditional security alerts. GitHub has repeatedly reported that leaked secrets in repositories are one of the most common sources of compromise.
- Excessive privileges by design. Service accounts are frequently over-permissioned to avoid operational disruptions. This violates the principle of least privilege and allows attackers to move laterally once a single credential is compromised.
US NIST highlights the importance of least privilege and continuous access evaluation in Zero Trust architectures.
- Lack of ownership and accountability. Organizations often cannot answer:
- Who owns a given service account?
- Which application depends on it?
- Whether it is still in use?
Orphaned machine identities remain active long after the systems that created them are gone, creating silent attack paths.
- High automation velocity. Cloud-native environments create and destroy identities dynamically. Traditional IAM workflows manual reviews, quarterly certifications, ticket-based provisioning cannot keep pace.
This gap leaves security teams blind to real-time identity risk.
Attackers are exploiting machine identities at scale. Attackers increasingly bypass phishing entirely and instead target:
- Exposed API tokens
- Cloud access keys
- CI/CD secrets
- OAuth tokens and session artifacts
MITRE ATT&CK explicitly maps techniques involving credential dumping, token theft, and service account abuse. Once compromised, machine identities often provide:
- Broad access
- No MFA enforcement
- Minimal behavioral monitoring
In many breaches, attackers appear as "legitimate services" rather than suspicious users. Why traditional IAM is insufficient. Conventional IAM focuses on:
- Joiner, mover, leaver processes
- Human authentication events
- Periodic access reviews
Machine identities do not:
- Join or leave organizations
- Take vacations or resign
- Respond to Login Challenges
- Fit neatly into quarterly review cycles
As a result, machine identities often fall between IAM, cloud security, and DevOps responsibilities, with no single team accountable.
The shift toward workload identity and secret less access. To reduce machine identity risk, organizations are adopting workload identity models that eliminate static secrets altogether. Major cloud providers now support identity federation for workloads:
- AWS IAM Roles for Service Accounts (IRSA)
- Google Cloud Workload Identity Federation
- Azure managed identities
These approaches replace long-lived credentials with short-lived, automatically issued tokens tied directly to the workload's runtime identity.
Emerging best practices for securing machine identities
Leading organizations are beginning to treat machine identities as first-class security principals, adopting practices such as:
- Centralized inventory of all machine identities
- Automated discovery of service accounts and secrets
- Short-lived credentials instead of static keys
- Automated credential rotation
- Least privilege policies scoped to specific workloads
- Continuous monitoring for anomalous identity behavior
CISA and NIST increasingly emphasize identity-centric security controls as foundational to cyber resilience.
The strategic reality going forward - As AI agents, autonomous systems, and large-scale automation expand, machine identities will dominate enterprise identity ecosystems. Security programs that continue to prioritize human identities alone will lag attacker tactics.
The future of IAM will require:
- Unified governance across human and non-human identities
- Integration with DevOps and cloud-native tooling
- Suggest remediation steps
- Identity-aware threat detection and response
- Clear accountability for every identity, regardless of type
In tomorrow's breaches, the most important question will not be "Which user logged in?" but, "Which identity human or machine was trusted, and why?"
This article is shared at no charge for educational and informational purposes only.
Red Sky Alliance is a Cyber Threat Analysis and Intelligence Service organization. We provide indicators of compromise information via a notification service (RedXray) or an analysis service (CTAC). For questions, comments or assistance, please contact the office directly at 1-844-492-7225, or feedback@redskyalliance.com
Weekly Cyber Intelligence Briefings:
- Reporting: https://www.redskyalliance.org/
- Website: https://www.redskyalliance.com/
- LinkedIn: https://www.linkedin.com/company/64265941
Weekly Cyber Intelligence Briefings:
REDSHORTS - Weekly Cyber Intelligence Briefings
https://register.gotowebinar.com/register/5207428251321676122
[1] https://www.secureworld.io/industry-news/machine-identities-security
Comments