Hardcoded Secrets: The Danger of API Keys in Code

The Underestimated Danger: What Are Hardcoded Secrets?

In modern software development, development speed is often a decisive factor. To quickly connect different systems with one another, software developers frequently store sensitive credentials, known as secrets, directly in the source code. This confidential data includes API keys, passwords, database credentials, and cryptographic certificates. Many companies lull themselves into a false sense of security as long as their code sits in private repositories. The reality, however, is alarming: an analysis shows that a full 35 % of all scanned private repositories contain at least one secret in plaintext^[1]. Once credentials are firmly embedded in the code, they can leak to the outside unnoticed via backups, workstations, or compromised accounts. As part of a professional cybersecurity practice, continuously tracking down these vulnerabilities is therefore a critical building block.

• API keys for external cloud services and interfaces that grant access to sensitive customer data or computing resources
• Plaintext passwords and database credentials for test or production environments, which are often stored unencrypted in configuration files
• Private cryptographic keys and tokens with which IT systems and automated services authenticate one another

Out of convenience or under time pressure, these secrets are often placed in the code as a supposedly temporary solution and then simply forgotten after a successful test run. For cybercriminals, such unprotected credentials are an open door: they do not need to overcome highly complex security barriers or exploit zero-day vulnerabilities. Instead, they simply log into your systems with the real, hardcoded permissions. For you as a managing director or IT manager in a mid-sized business, this poses an extreme risk. A single forgotten API key can be enough to compromise your entire network, exfiltrate data, or launch a devastating ransomware attack.

Threat Statistics: Why Mid-Sized Businesses Are in the Crosshairs

The German Mittelstand is long past being a sideshow when it comes to cyberattacks. On the contrary: small and mid-sized companies are increasingly coming into the focus of attackers, because their defense mechanisms are often easier to overcome than those of large corporations. A particularly underestimated entry point here is hardcoded secrets, that is, credentials, passwords, and cryptographic keys that are stored unprotected in the source code. Once these repositories are read out, attackers have an easy time taking over your company's sensitive systems.

• Explosive growth in data leaks: In 2023 alone, more than 12.8 million new secrets were exposed on GitHub, an increase of 28 percent compared to the previous year^[2].
• Stolen credentials as the main cause: According to the Verizon Data Breach Investigations Report, stolen credentials have for years been among the most important methods with which attackers gain unauthorized access to corporate networks^[3].
• Enormous number of unreported cases in private repositories: Studies show that about 35 percent of private repositories contain at least one unprotected secret^[4], which refutes the widespread assumption that private code is automatically secure.

The greatest risk lies in the late discovery of such vulnerabilities. Often several months pass before an unnoticed data leak or security breach is even identified. During this time, attackers can burrow deep into your IT infrastructure and exfiltrate data unnoticed or prepare ransomware. With its Cybersecurity service, CAVRIX offers mid-sized companies a continuous, automated vulnerability analysis that checks your code on every single commit. This protects your company from existentially threatening incidents while simultaneously fulfilling the strict requirements of compliance directives such as NIS-2.

The Fallacy of Private Repositories: False Security in Everyday Work

Many IT managers and developers in mid-sized businesses lull themselves into a false sense of security as soon as source code sits in a private Git repository. There is a widespread myth that internal environments are protected from external access and therefore place lower demands on code hygiene. The reality, however, looks different: statistics show that private repositories exhibit a far higher density of hardcoded credentials than public projects. According to a study by GitGuardian, private repositories contain sensitive secrets on average eight times more often than public repositories, because developers act far more carelessly there^[5]. For you as an IT manager or technical decision-maker, this thoughtless practice represents a considerable, often unnoticed security risk.

• Lack of risk awareness: Because access to the repository is restricted internally, API keys, passwords, and database credentials are often stored directly in the source code for quick testing.
• Human errors and misconfigurations: A single oversight in permissions or an incorrect setting in the version control system can instantly make a formerly private repository visible to the entire public.
• Compromised accounts: If attackers gain access to the credentials of a single developer through phishing or password leaks, the entire source code, including all secrets hidden within it, is exposed.
• Supply chain vulnerabilities: Cloned repositories on local developer laptops or unsecured backup servers multiply the attack surface far beyond the original cloud environment.

Effective protection against these risks requires a systematic approach that goes beyond spot checks. As part of our Cybersecurity service, CAVRIX proactively closes this security gap. We carry out a continuous vulnerability analysis of your repositories that takes effect on every single commit. This way, hardcoded secrets are detected immediately, before they can cause damage. Combined with an automated vulnerability scan and human triage by our experts, we ensure that your code stays clean and that the strict security requirements of directives such as NIS-2 are met without gaps.

The Legal Obligation: How NIS-2 Mandates Secrets Management

For the German Mittelstand, the legal grace period is over. With the EU directive NIS-2, companies with more than 50 employees or over 10 million euros in annual revenue must implement strict technical and organizational measures for cyber hygiene and risk analysis^[6]. If you, as a managing director or IT manager, must secure your IT infrastructure, technical controls above all are in focus. An often overlooked but critical aspect is secrets management. If credentials such as API keys or passwords are stored unencrypted in the source code, this poses a massive security risk that directly violates the legal requirements for risk analysis and damage minimization.

The Legal Consequences for Mid-Sized Businesses

Non-compliance with the requirements is no longer a trivial offense. NIS-2 explicitly demands security measures in the supply chain and in vulnerability management. Hardcoded secrets are considered blatant security gaps in audits. In the event of breaches of duty, companies face not only substantial fines in the millions, but also personal liability of the management. Because IT security is now legally anchored as a matter for top management, you must act proactively and demonstrate that your systems are continuously checked for such vulnerabilities.

• Regular automated repository scans on every commit to identify secrets immediately
• Use of secure password managers and decentralized vaults instead of plaintext storage in the code
• Establishment of clear development guidelines for separating configuration from sensitive data
• Training of development teams regarding secure coding practices and cyber hygiene

To implement these strict requirements without your own expensive in-house security team, CAVRIX offers a seamless solution with its Cybersecurity service. We continuously check your repositories for vulnerabilities and hardcoded secrets. Through this continuous protection and the relief of your team, you retain full control and ensure that your organization meets all required criteria for compliance without losing your operational focus.

The Problem With Conventional Scanners: Why Automated Tools Alone Fail

Many IT managers and technical leads in mid-sized businesses rely on standard scanners or simple push filters in their repositories. But these automated tools quickly reach their limits. Conventional filters usually look for rigid, known patterns such as the standardized structures of large cloud providers. Generic secrets such as private keys, individual database passwords, or self-generated API tokens, however, often have no distinct patterns. Generic credentials without a fixed pattern, such as individual database passwords or self-generated tokens, escape purely pattern-based detection and are regularly overlooked by automated filters.

The second major problem is the flood of false alarms that conventional tools generate. When a system raises an alarm for every unusually formatted string, this inevitably leads to massive alert fatigue among your developers. Real dangers are lost in the daily background noise and are overlooked. An automated vulnerability scan does deliver raw data, but no classification. Without professional review and filtering, this leads to a massive overload of your IT department, which is often already suffering from the ever-present skills shortage. The result is a deceptive sense of security: you scan, but out of overload you no longer respond in time.

• Pattern limitation: Standard scanners often only recognize known formats of large platforms and overlook individual, generic passwords.
• Flood of false alarms: Unreviewed scan results generate countless false positives, which leads to acute alert fatigue.
• Lack of context: Pure software tools do not understand whether a found key sits in an inactive test environment or in production code.
• Missing remediation: A scanner only reports a vulnerability but does not resolve it - the time-consuming work stays with your team.

This is where it becomes clear why pure software solutions are incomplete. Reliable protection requires a combination of intelligent technology and human expertise. As part of the CAVRIX Cybersecurity service, this gap is closed. CAVRIX does not blindly rely on automated filters, but instead offers a continuous vulnerability analysis of your repositories on every commit - combined with human triage and subsequent, completed remediation. This way your team is relieved, false alarms are sorted out, and real security gaps are closed proactively.

The CAVRIX Solution: Continuous Code Security in the Cybersecurity Service

In the German Mittelstand, one's own repositories and internal source code are often mistakenly perceived as an inherently secure environment. This is a fatal fallacy, because professional attackers increasingly focus on exactly these internal development platforms in order to penetrate deep into networks unnoticed. With its Cybersecurity service, CAVRIX systematically breaks down this blatant risk. The integrated, managed vulnerability analysis continuously scans your code repositories on every single commit for forgotten credentials, API tokens, and passwords. This turns classic code security into an automated, proactive shield that closes vulnerabilities before they can even reach a production environment.

• Proactive check on every commit: Every code change by your developers is fully automatically analyzed in the background to immediately uncover forgotten API keys, database passwords, or cryptographic keys, before they become entrenched in the repository.
• Human triage by experts: To protect your internal IT team from a flood of alerts, the CAVRIX Security Operations Center (SOC) reliably filters out false alarms. You and your IT managers receive only verified, genuinely critical findings with a clear need for action.
• Turnkey remediation without team effort: Identified security gaps do not remain as open tasks in your ticket system. Our cybersecurity experts take over the triage and the proper remediation of the findings directly in the affected code repository, so that no additional effort arises for your developers.

That this protection is urgently necessary is confirmed by current analyses: in 2024 alone, more than 23.8 million hardcoded secrets were newly identified on public code platforms^[8]. In the private sphere, the number of unreported cases is often far higher. For managing directors and IT decision-makers in mid-sized businesses, the CAVRIX service therefore means an enormous strategic relief. With it, you not only meet the ever stricter requirements under IT security laws such as NIS-2, but also effectively protect your digital supply chain and your intellectual property from extortion attempts, without having to burden your own specialists with complex troubleshooting.

Practical Best Practices: How to Secure Your Source Code for the Long Term

Permanently banishing hardcoded API keys and passwords from your source code requires far more than just a one-time cleanup of your repositories. Rather, it demands a fundamental adjustment of your company's entire development culture. Because, according to current analyses, over 23 million confidential credentials end up unprotected in publicly accessible repositories every year^[9], IT managers and managing directors in the German Mittelstand must address the risks in their own source code actively and proactively. Effective protection of your digital supply chain succeeds only when security is firmly anchored in the development process from the outset and security gaps do not first become apparent after a successful cyberattack.

• Use of modern secrets managers: Use specialized and secure solutions to store sensitive credentials and API keys in encrypted form. Instead of placing this data directly in the code, it is made available to your software dynamically only at runtime.
• Systematic training of your developers: Continuously raise your IT team's awareness of modern and secure programming practices. There is often the misconception that internal or private repositories are secure by nature, which can quickly lead to negligence in everyday work.
• Establishing the zero-trust principle in the source code: Treat every part of your software architecture as if it could potentially be compromised. Every data flow and every access to external interfaces or databases must be explicitly authenticated and strictly controlled according to the principle of least privilege.

To establish these demanding best practices permanently in your operation without restricting the daily work speed of your developers, fully automatic monitoring of the source code is the most efficient method. Through our specialized Cybersecurity service, CAVRIX offers your mid-sized business an integrated vulnerability scan. Our system checks your repositories fully automatically on every single commit for hardcoded secrets or other security flaws. As soon as an anomaly is detected, experienced human triage ensures precise assessment and the direct initiation of remediation, so that your sensitive business data stays reliably protected.