Wednesday, August 12, 2026 Digital Forensics & Evidence Sign in
Lars Daniel

Digital forensics expert & expert witness · The Forbes digital forensics columnist

AI Evidence

Eric Adams’ Seized Devices-Only Source Of Specific Electronic Evidence

The New York City mayor's devices have been seized because they contain data that does exist anywhere else. Physical device access means experts can recover deleted data.

NYC Mayor Adams Commemorates 30th Anniversary Of Terror Attack On Jewish Students
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The recent seizure of New York City Mayor Eric Adams' digital devices by the FBI represents a significant moment in the ongoing federal investigation into his campaign fundraising practices.

When law enforcement seizes digital devices like smartphones, tablets and computers, it typically indicates that investigators believe these devices hold evidence that may corroborate information found in paper documents or digital records from remote sources, such as cloud-based file storage and service providers. More importantly, physical devices contain evidence that exists nowhere else.

Online Data Is Limited

While online service providers may retain deleted files in the trash or deleted folders for a short period, those records are often purged after a certain timeframe, usually on a rolling basis. Once deleted, users can also manually empty the trash folder, making those files and communications irretrievable and truly deleted from the online platform. This stands in stark contrast to physical devices.

Physical Devices Contain Data That Exists Nowhere Else

With access to smartphones, tablets and computers, digital forensics experts can recover extensive amounts of deleted data from the physical storage areas on the devices themselves.

This data includes not only the actual messages, files and records but also other types of data a user is completely unaware of and has no access to when using their devices. With these additional digital artifacts, experts can piece together a more complete understanding of the who, what, when, where and why in a case.

For example, these artifacts might include information such as when specific applications were accessed, who was involved in communications and when those exchanges occurred, even if actual message content has been erased.

Additionally, location data from the device can place individuals at specific locations during key moments, providing investigators with a detailed timeline of the user's activities.

Truly deleted data from online sources can be a relatively simple task, but erasing data from a physical device is extremely difficult and requires a correctly performed factory reset for mobile devices and full disk wiping utilities for a computer.

The seizure and examination of physical devices represent an escalation in almost every investigation. Our online activities can provide investigators with a wealth of information, but this pales compared to what can be recovered from physical devices using modern digital forensics technology.


This column originally appeared in Forbes.

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