Deleted-File Forensics & Timelines

Every file has two histories: one for its life and one for how it died. Usually both can be recovered. From recycle-bin records to journal entries and shadow copies, we establish what existed on a machine, how it was used, and exactly when (and by what means) it was deleted. For York employers, solicitors and private clients with a deletion in dispute.

◇ Speed after method. The free assessment and a written scope of works come first. Forensic fees are paid upfront in full once you accept the fixed quote, before we start examining anything. On other work, in most cases you only pay if we recover your data, and electronic, mechanical and chip-level work is 50% upfront, with the balance only if we recover your data. All of our prices are shown on our data recovery cost page.

// disputes this page answers

When the deletion is the question

We examine any matter where what was removed, and when, carries weight.

The recycle bin was emptied in the days before an exit or a dispute
A folder of records is missing and nobody will say when it went
Someone claims a document never existed on the machine at all
A wiping or clean-up tool is suspected of having been run
The date of a deletion matters as much as the deletion itself
Earlier versions of an edited or overwritten file are needed

Recycle bin, or something more deliberate

Deletions come in levels, and each level leaves a different record. A file sent to the Recycle Bin gains a small piece of metadata holding its original path, its size and the exact moment of deletion, and this metadata routinely survives the emptying of the bin. A permanent deletion skips the bin altogether, but it only releases the file's entry in the file system index, leaving the content on disk until other data overwrites it. Which level of deletion occurred, and when, is usually one of the examiner's first findings, and it may say something about intent.

Rebuilding the sequence of events

In digital forensics, timeline reconstruction is the act of placing every recorded event into one dated order, from sources that cross-check each other. The NTFS Master File Table tracks created, modified and accessed times for each file. The change journal documents operations such as create, rename and delete as they occurred. The file system's transaction log adds fine detail around the moments that matter. The Windows event logs show who was signed in, and what was opened or modified, in the hours before a deletion. Read against creation dates, a deletion timestamp answers the useful question: was this routine housekeeping, or was it timed?

The versions nobody thought to delete

Workstations quietly keep more than one past. Volume Shadow Copy snapshots, created for restore points and backups, hold earlier states of the disk, complete with files that were later deleted and versions from before an edit. Compare a snapshot with the current volume and you see exactly which files disappeared between two dates, which is often the cleanest exhibit a deletion case can produce: the file present on the 3rd, absent on the 10th, and the journal recording its removal on the 7th.

When a wiping tool has run

Wiping software is not quiet. The anti-forensics detection techniques we apply start from the traces the tools themselves leave: installation records and prefetch entries naming the program, execution timestamps, the overwrite patterns left on disk, and the absence of expected artefacts. As such, a wipe destroys content but creates evidence (the tool used, when it ran, under whose account, and what it missed). Many wipes are partial or interrupted runs, and what survives them is recovered through standard means.

Information related to acquiring digital images of computers and preserving the integrity of those images during processing can be found at the forensic recovery hub. Deleted data associated with removable devices continues on USB device forensics. Whole machine capture is discussed in workstation deep imaging and fees for services can be located on our prices page.

// the sources the timeline draws on

Six records, one sequence

Each source corroborates the others; the timeline stands because they agree.

Recycle-bin metadata

The original file path, file size and date and time of deletion, which survive an emptied recycle bin.

File-table entries

All time stamps (created, modified, accessed) for both existing and deleted files.

Change-journal records

Creations, renames and removals, in operation-by-operation order.

Event-log corroboration

Sign-in activity and access around each removal, as reported by the system's own logs.

Shadow-copy versions

Previous states of the volume including files deleted since then.

Wiping-tool footprint

Which utility was run, when, under which account, and what it missed.

// fees and footing

Forensic fees, and the lawful basis we require

What forensic work costs

The free diagnostic that opens every case is completed within two working days of arrival; forensic casework itself is paid upfront once you accept the fixed quote. Our standard fee for a full forensic investigation including report is £800 plus VAT, payable 100% upfront. The cheaper forensic binary image and deleted-file extraction service, without the report, is £400 plus VAT. Both figures are itemised on our prices page, and the written scope is agreed before payment is taken.

Who we can act for

Deletion casework is done on company-owned computers, your own devices, or on a solicitor's instruction. We accept instructions on three footings only: equipment the company itself owns; the instruction of a solicitor, insurer or court; or a computer which is genuinely your own, including one jointly owned in family law cases. We will never hack into a computer. We will never intercept live communications. And we will never examine a device that you have no right to examine.

// getting your device to us

Sending it in — easier than you'd think

Every day of normal use costs a deletion case something. So please take the computer out of use immediately and call 0800 689 0668 today to get a quote. Once you've got that quote, the hard drive (not the computer) is sent to our Leeds lab by tracked next-day post, or handed in at the Leeds lab's reception, Monday to Friday, 9am to 5:30pm. No appointment is required. On arrival, the drive is signed into the custody record.

Is the hard drive or SSD still inside a machine, such as a laptop, MacBook, iMac, CCTV/DVR system or server? Please remove the hard drive or SSD from the machine first and then post just the bare drive by itself; we do not provide a service for removing drives from devices. For a server or RAID, send every disk, each clearly marked with its bay. For a NAS, send its disks labelled by bay if you can remove them, otherwise send the NAS itself. We cannot work on storage soldered to the motherboard (e.g. Apple Silicon Macs, T2 Macs and certain slim laptops): if it doesn't come out, it can't come in. If you are unsure whether your storage is removable, call us before sending.

  • A sturdy box or bubble wrapped parcel will suffice. External drives are posted as complete enclosures including their cables and power supplies. For everything else the cables, caddies and power supplies remain at home.
  • Download and print off the booking-in & shipping form (PDF). Add your name, phone number and a short explanation of what happened to the booking form. Place the completed booking form inside the parcel.
  • Royal Mail Special Delivery ensures tracking and insurance throughout transit. Your own courier can provide a similar service if you would prefer to book one. There is no collection service at our end.
  • Prefer to hand deliver? Once you have your quote, the Leeds lab has a reception area at the address here where drop-offs can be made, Monday to Friday, 9am to 5:30pm, with no appointment needed.
// where your device is headed

Leeds Data Recovery

17th Floor, The Pinnacle
Albion Street
Leeds, LS1 5AA

↓ Print the booking-in & shipping form (PDF)

Once you have your quote, send your package addressed to Leeds Data Recovery (about a 40 minute drive from York on the A64 & A1(M) or next working day if you want to send it using trackable post). We will contact you as soon as we have taken delivery of your package and put it in line to be worked upon.

Can't figure out what to pack? Ring 0800 689 0668 first, or try our free online diagnostic tool.

// deleted files — answered before instruction

The questions deletion cases start with

Yes, frequently, and in fact twice over. The bin's metadata usually survives to show what was deleted and exactly when. The actual content remains in unallocated space until it is overwritten. So the sooner the machine stops being used, the more of both survives.
This is exactly what the timeline is for. Each bin record, journal entry and log event carries its own timestamp. Where they agree, the moment of deletion can be stated with confidence, and read against the file's creation date and the surrounding events, its timing speaks for itself.
Attribution is to the user account and the session: which login was active, from where, and when the deletion ran. Tying that account to a hand on the keyboard is a matter for the wider case; we state exactly how far the technical attribution goes, and no further.
Ongoing use of the computer overwrites unallocated space a little at a time, so the odds of recovery fall with every week, although journals, bin records and shadow copies often persist regardless. Stop using the machine now and the assessment will tell you honestly what is left.

Deleted is a claim. The disk holds the record.

Stop using the machine, call the freephone number, and let the timeline speak for itself.