Mobile devices and insider threat investigations: Why access keeps getting harder
Key takeaways
- Data exfiltration and IP theft and departing employee cases are common enterprise investigations, and mobile devices are increasingly central to how they get resolved.
- Sixty-six percent of DFIR teams report growing mobile device volume, yet 53% can only extract limited data, the top mobile challenge for the third year in a row.
- Consent-based, category-scoped extraction is how DFIR teams get defensible mobile evidence without over-collecting an employee’s personal data.
When a company suspects an employee of taking a trade secret, client list, or product plans to a competitor, that’s an insider threat. These internal investigations often start with laptops and corporate email. Increasingly, the evidence that proves intent lives somewhere else: a bring your own device (BYOD) phone, in a messaging app the company has no visibility into.
The 2026 State of Enterprise DFIR report, based on responses from more than 350 private sector digital forensics and incident response professionals, shows how common these cases are and how central mobile forensics has become when investigating them. From messaging and location history to app data, mobile evidence often provides the most direct insight into user behavior and intent, even as operating system changes, tighter security controls, and evolving privacy expectations reshape what investigators can collect and how.
49%
of enterprise DFIR teams say they frequently encounter data exfiltration or IP theft investigations.
Why insider threat conversations happen on mobile
Many corporate DFIR programs have achieved maturity around endpoints, email, and cloud logs. That infrastructure is monitored and well understood, but it’s increasingly not the only place where conversations are taking place. Sixty-six percent of enterprise DFIR teams say the number of mobile devices in their investigations is growing, and insider cases are a big part of why.
Forty-six percent of teams say they frequently handle departing employee investigations. An employee coordinating with a future employer, or moving files ahead of a resignation, is unlikely to do so over their corporate email. They’re more likely to use Signal, WhatsApp, or a personal email app on a BYOD device. A phone’s camera adds another layer since photographing an office whiteboard or documents left out on a desk leaves no trace on a monitored system.
Why mobile access is getting harder
Mobile evidence is key to modern investigations, but it’s also increasingly governed by the same safeguards meant to protect users and organizations. New operating system releases, stronger device security, and stricter privacy rules are all reshaping what investigators can collect, how they collect it, and under what conditions.
48%
of DFIR professionals cite inability to gain access to devices due to MDM controls as a challenge.
Why targeted evidence collection matters
In BYOD environments, where phones often hold a mix of corporate-relevant and personal data, extracting everything from the device usually isn’t the right call. The goal is consent-based collection that limits over-collection, using category-based extraction to target work-related messages or files rather than the entire device. That way, an employee isn’t asked to hand over their whole personal life to resolve a work-related issue, and they get their phone back faster, too.
How Magnet Verakey and Axiom Cyber support internal investigations
Once there’s consent to examine the device, the goal is achieving the most complete picture without unnecessary intrusion. Magnet Verakey can perform a full file system extraction from iOS and Android devices, including deleted and encrypted data, and a narrow category-based extraction to avoid collecting personal information. From there, Magnet Axiom Cyber handles analysis and reporting, parsing mobile artifacts alongside cloud and computer evidence in a single file, using the Timeline and Connections features to reconstruct what happened and when.
What this means for enterprise DFIR teams
Mobile evidence is now central to how insider threats and other internal investigations get resolved. Keeping pace means adapting tools and processes for a more regulated, technically complex environment, and keeping technology stacks current as new mobile operating systems change what can be collected and how.
That balance between evidentiary value and privacy, security, and legal obligations only gets more important in BYOD environments, where a single device often holds both corporate and personal data. Having a consent-based, defensible path to mobile evidence before a case depends on it is no longer optional for enterprise DFIR teams.
Read the full 2026 State of Enterprise DFIR report
See how 350+ DFIR professionals are rethinking mobile evidence, AI, real-time collaboration, and the toolkits that support modern investigations.