What is jailbreaking? Risks for corporate mobile devices

Imagine an employee using a company-issued iPhone with access to corporate email, CRM systems, and business documents. One day, they need to install an app that isn’t available through App Store. However, Apple’s built-in restrictions prevent them from doing so.

Instead of contacting the IT department, the employee decides to bypass those restrictions on their own. They perform a jailbreak, unaware that they have just opened a potential backdoor to serious security threats. What exactly is jailbreaking, and why should every organization be concerned about it?

What is jailbreaking?

Jailbreaking is the process of removing the restrictions imposed by Apple on the iOS operating system.

It is typically performed to gain full control over the device, allowing users to install unauthorized applications and modify the appearance and functionality of the operating system – including components that are critical to its stability and security.

How does jailbreaking work?

From a technical standpoint, jailbreaking exploits vulnerabilities in iOS to gain administrative privileges, commonly referred to as root access. Special software is installed on the device to ‘unlock’ the operating system. Once the process is complete, users can modify the system at a level that is inaccessible under Apple’s standard configuration.

In other words, the user takes control of the device’s operating system in a way that was never intended by the manufacturer. For an employee, this may mean greater customization and flexibility. For an organization, however, it can mean losing control over a mobile environment that processes sensitive business data every day.

Is jailbreaking legal and safe?

Whether jailbreaking is legal depends on the laws and regulations of a particular country. In many countries, jailbreaking is not explicitly prohibited, and users may jailbreak their iPhones at their own risk.

The real issue lies in the consequences:

• Loss of warranty and support. Jailbreaking violates Apple’s licensing terms. A jailbroken iPhone may no longer qualify for support or repair services provided by Apple.
• Regulatory risks. Jailbreaking increases a device’s exposure to mobile threats, potentially leading to violations of regulations such as GDPR when personal data is processed on the device.
• Violation of corporate policies. In a business environment, jailbreaking may be considered a breach of security policies or a failure to comply with employee responsibilities.

In summary, jailbreaking itself may be legal, but its consequences can result in legal and organizational issues.

As for whether jailbreaking is safe, the answer is straightforward.

Jailbreaking significantly weakens a device’s security posture by compromising the integrity of the operating system and allowing the installation of unverified applications.

As a result, devices may become less stable, more prone to crashes, and increasingly vulnerable to malware infections. Protecting sensitive data stored on the device also becomes considerably more difficult.

Jailbreaking on corporate devices

The risks associated with jailbreaking apply to two categories of devices commonly used in organizations.

Corporate-Owned Devices – when an employee jailbreaks a company-owned device, the phone’s operating system no longer functions as intended, and the IT department loses the ability to enforce security controls effectively.

BYOD Devices – in a Bring Your Own Device environment, employees may jailbreak their personal devices without the employer’s knowledge. From a security perspective, the outcome is the same: corporate data resides on a device that is more susceptible to security incidents and remains outside the organization’s direct control.

Potential business impact of jailbreaking

In both scenarios, the consequences can be severe:

• compromise of credentials used to access corporate systems,
• leakage, loss, or unauthorized access to corporate and customer data,
• challenges during security audits and certification processes,
• violations of applicable regulations and internal policies (e.g., NIS2, GDPR or national cybersecurity requirements), potentially resulting in financial penalties and legal liability.

It is worth remembering that even a single compromised smartphone can become an entry point into an organization’s entire digital infrastructure. For this reason, most companies rightly classify jailbreaking as a security incident.

How to protect corporate iPhones from jailbreaking?

Effective protection against jailbreaking requires a comprehensive mobile security strategy built on three pillars: policies, technical controls, and user awareness.

Security policies: the starting point, not the solution

Any organization that relies on mobile devices should clearly define its stance on jailbreaking. A written security policy should include:

• a prohibition on using jailbroken or rooted devices in the corporate environment,
• procedures for detecting and responding to jailbreaking incidents,
• rules governing access to corporate data from both company-owned and BYOD devices,
• clearly defined consequences for policy violations.

Such a document provides the necessary formal foundation, but it cannot solve the problem on its own.

MDM: the technology that enforces the rules

No security policy is effective without tools capable of enforcing it. A Mobile Device Management (MDM) solution cannot be replaced by written guidelines or employee awareness campaigns. MDM is the only practical way to maintain meaningful control over mobile devices.

An MDM platform enables administrators to:

• monitor device compliance in real time – and identify devices that do not meet security requirements,
• enforce security policies – including strong passwords, data encryption, VPN usage, and operating system updates,
• manage applications – by maintaining whitelists and blacklists, preventing installations from unauthorized sources, and distributing approved applications.
• separate business and personal data – by storing corporate information within a managed work profile.

MDM solutions such as Proget can detect files associated with jailbreaking or rooting and automatically trigger predefined responses, such as restricting access to corporate data or locking the device (through Mobile Threat Prevention mechanisms). It is also worth noting that enrolling a device into MDM typically requires a factory reset, which removes any existing jailbreak in the process.

Employee awareness: the last line of defense

Finally, organizations should not overlook user education. In many cases, jailbreaking is not driven by malicious intent but by a lack of awareness about the associated risks. Employees should understand that modifying a corporate device can expose both the organization and themselves to significant security threats. The same applies to personal devices used to access business systems.

The key takeaway is this: jailbreaking is not merely a technical issue – it is an operational and organizational risk. If an organization lacks visibility and control over its devices, it also lacks control over its data.

FAQ about jailbreaking

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