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HDR / Faults and failures / A ransomware attack

Your files are encrypted

Hull ransomware recovery. Rushed encryption leaves gaps, and the files come from them. No ransom is paid.

Locking a whole network overnight is a rush job. And rush jobs are messy. And that's where your files come from. The shadow copy the script never reached. A snapshot left on the NAS. The originals were deleted but still sitting there in free space. Large file encrypted only partially. We service clients from Hull, the East Riding and North Lincolnshire. We handle your data. We do not speak to whoever did this.

Only pay if we recover your data, on most jobs Free to look at, then one fixed price Parcels come in from Beverley, Grimsby and Skegness

An engineer will take the details
0800 6890668

Putting a name to the symptom.

Nothing similar? Go to the triage →
The symptomsWhat the fault isWhat to try
There are additional suffixes being applied to filenames now; .akira or a custom string of characters that has been assigned to you personally.The encryption process continued through to completion. Each Qilin extension that is generated represents an individual victim.Snap a photo of it. Remove the network cable.
akira_readme.txt sitting in every folderAkira's own note. Other teams have used fn.txt and/or powerranges.txtDo nothing with any of them.
README-RECOVER-<extension>.txtQilin again: the note is called whatever your extension is.Save everything
RECOVER-<id>-FILES.txtBlackCat/ALPHV name their notes in this fashion.That is evidence. Save it.
Your desktop wallpaper was changed to a ransom note.The note says you are supposed to negotiate via a Tor link.Take a picture of what appears on your screen.
All shadow copies gone. vssadmin delete shadows in the logThat eliminates any rollback, since Windows has nothing to restore back toOddly useful to us: tells us where to start
Send it to us: get a quote first, either over the telephone or via our online quote form. Then carefully package it to prevent damage in transit, insure it for its full value and post the package using a trackable service to the Leeds intake laboratory; alternatively you may drop it off there (Monday to Friday, 9am to 5:30pm, no appointment needed). For laptops, PCs, Macs and recorders, we require only the drive unit itself (storage soldered to the board is not taken on; if you're not sure which kind you have, ring us first); for RAID arrays and servers, we just need the individual disks, labelled by their respective bays; for a NAS, send the drives if you can remove them, but if not, please include the entire NAS device. A single external drive goes whole, with its cable and power adapter. We pay for return postage. If you would like an engineer to inspect the packaging prior to taping the box closed, please give us a call first. Further information is available on our sending page.

The ransomware crews attacking UK networks in 2025–26.

QilinIn 2025 alone, it was named in more attacks than any other group. Its publicly available list of victims now exceeds a thousand organisations. This included Synnovis, and NHS pathology in London ceased operations in June 2024. Unfortunately, no "free" decryption key exists.
AkiraIn November 2025, CISA and the FBI jointly issued an advisory stating it is a live threat. A 2023 version was broken, and in 2025 a researcher demonstrated a way to break a 2024 Linux version using brute-force cracking; however, there is no general decryptor for the versions currently circulating.
Post-LockBitAn NCA-led (National Crime Agency) investigation broke up LockBit in February 2024, returning keys to some of its victims. Since this disruption, activity has shifted to smaller-scale attacks.
The free decryptorsNo More Ransom hosts any legitimate free tools used to decrypt files. As of today, there are no such tools offered for use with Akira or Qilin or Medusa or RansomHub or INC. Any item marketed as a "universal decryptor" that can be purchased online is both fake and worthless.

From the box arriving to the files going back.

Jobs we have logged →
01

A case number first, then a free diagnosis Free

Every piece of gear that shows up receives a case number on the very same day it arrives. An engineer examines it and determines what is really wrong with it and there is no charge for this. We give you straight language about which files we will be able to copy from the disk and which ones we won't be able to. Then we provide you with a single price quote, in writing, based upon these findings. We don't begin working on anything until you agree to the quoted price.

The diagnosis is freeOne price, put in writingNothing to pay yet
02

Isolated first, then copied as found

Everything infected is removed from the network before we touch it. Each disk is then fully imaged, free space included, because the original data is typically left intact there. We clean nothing. All evidence (the ransom note, the changed wallpaper, the locked screen) goes into the case file.

A forensic image of each diskIncluding unallocated space
03

Lift out what is left

Most ransomware does not encrypt data in place. Instead, they first read the data, create an encrypted copy adjacent to it, and then delete the original. Deleting a file only deletes the pointer. The actual bytes are left on the disk until something else uses the allocated space. This is why recovering the exact, original bytes requires little more than normal carving techniques. Other methods receive similar treatment: shadow copies the run ignored; snapshots on NAS devices; partial encryption of larger files; and the presence of a legitimate decryptor when one is available for that particular type of ransomware.

Deleted originals carved outChecked against the published keys
04

New media, and a written record

No information will go back to your "kit" that the attack affected. All of your files will return on the media purchased for the purpose of the job and include a written summary of all of the completed work. This will be adequate for both an insurance claim and the Information Commissioner's Office.

Copied onto new mediaA write-up for the ICO
05

You sign it off, then it comes back

You will not be charged while you think about this. First, you receive a list of everything that was recovered from the drive. Once you have seen the list and given us the go-ahead, the bill comes next. Files are returned to you on media purchased specifically for this job and we cover the return postage as well. Your job is kept open by us until you can view them on your personal computer.

You approve the listing firstCopied onto new mediaReturn postage at our cost

What turns up most often

  • vssadmin delete shadows /all /quiet: you'll see this in most attacks. It deletes the restore point(s) Windows has been keeping. When we spot this in logs, we can generally figure out what script was used and which other computers might have been compromised.
  • Read, encrypt, delete leaves behind residue when attackers use it. They remove the link to the original file but don't erase it, so it remains in unused space on the hard drive until Windows needs the space again. Anytime we carve out a deleted file, we'll probably end up getting back the entire file.
  • In a rush, attackers tend to hurry through encryption and only partially encrypt a large file. If they skip over anything, they're leaving it open for access.
  • Rules are tightening: a new government plan announced in July 2025 proposes that public institutions should never pay ransoms. With that, all critical national infrastructure should follow suit. Next, private industry may face similar restrictions. Direction is clear.

Now refusing to pay is the norm: in a June 2025 Sophos survey, 97% of organisations were able to recover their data, and 49% ended up paying to recover it. According to Coveware, in Q3 2025, they reported their lowest ransom payment percentage ever, at 23%. The British Library was hit with a ransom demand of close to £600,000 in 2023, refused to pay, and rebuilt itself. Paying does not ensure you won't lose your data and it was never the only way out; it was simply the option being presented to you by those who locked you out.

Under attack? Ring these

  • Report Fraud (previously known as Action Fraud): you can contact them at 0300 123 2040 to report cyber crime. If you call them when you are under attack, someone will answer regardless of what time it is.
  • NCSC: after you experience a ransomware attack, you should also file a report with the National Cyber Security Centre. Its ransomware guidance is worth following step by step, in order, not in pieces.
  • ICO, inside 72 hours: the UK GDPR time clock begins once you discover personal data may be compromised. Three days after that and it is done. Do not wait.
  • No More Ransom: nomoreransom.org, backed by Europol, is the one place where a legitimate, free decryption tool is going to appear. Check there first before believing any other "offer".

Our role is data recovery. It's our duty to image the disks, recover everything possible, put the files back onto hardware that we know is clean, and document the work the way an insurance company or the ICO will want it. We do not establish communication with the attackers, nor should you.

One case from the casebook.

HU · HUL-2026-0638LOGGED ✓

A builders' merchant in North Lincolnshire, hit by ransomware overnight

The files were never locked in place. Each file was opened and a locked version created. Then the originals were deleted. This allowed us to carve out of the free space on the disk whatever was needed. All the rest of this was sitting in a NAS snapshot that no one looked at. The business was running within the week with no ransom paid and no response given to the threat.

Trading again in under a weekNothing paid to anyone

Before you box it up.

Do these first

  • Take photographs of each ransom note and each locked screen.
  • Remove from the network anything that was infected; however, keep them turned on.
  • Save all log information. Remove nothing.
  • First contact Report Fraud, then the NCSC; however, if personal data was stolen, then you must notify the ICO within 72 hours.

What not to do

  • Do not communicate with, negotiate with, or pay the attacker(s).
  • Restoring from a backup while the device is still contaminated.
  • Trust no one offering a universal decryptor.
  • Turning back on any NAS that was previously locked before it is photographed.

Asked most weeks, answered here.

Should we just pay it?

We say no, and we won't act as a go-between either. Police guidance and the ICO both advise against paying. Any payment funds the next attack on somebody else. No criminal is bound to hand over a key that works. And the ICO has said that paying will not count in your favour when a breach is assessed.

Realistically, how much of it comes back?

Many times, most of the data affected by a ransomware attack can be recovered, in full or in part, using five different methods: a backup you made before the attack; finding any shadow copies that the attacker's script missed; restoring files from snapshots that remain on your NAS device; locating any original files deleted during the attack and found in the free space on your system; and occasionally, a free decryptor created specifically for that build of the ransomware.

Does a free decryptor exist for ours?

No More Ransom is the place to look for decryption tools. The No More Ransom project is backed by Europol. It also has a very honest description of what is currently available. At present, there is no decryption software available for versions of Qilin, Medusa, RansomHub or INC. Likewise, there is currently no decryption software available for the most recent versions of Akira or LockBit. Anybody who charges you money for access to the decryption software for one of these versions is effectively providing you with professional services to recover your files, but using a different name.

Who must be notified?

Report cyber crime to Report Fraud (formerly Action Fraud) via telephone number 0300 123 2040. Businesses should contact the National Cyber Security Centre as well. In addition, if personal data was affected, businesses will need to report this breach within 72 hours to the Information Commissioner's Office.

A drive left switched off loses nothing more.

Leave it off. There are only a few start attempts left in your failing drive and each attempt uses up a little more of what remains. Our complimentary diagnosis will determine what files are readable.

0800 6890668