A small business guide to ransomware: the warning signs, what to do in the first hour, and why paying is rarely the end of the story.
Ransomware is no longer something that happens to large corporations and makes the national news. The attackers have moved downmarket on purpose. Small and medium businesses are targeted precisely because they have valuable data, limited IT resource, and a strong instinct to resolve the problem quickly and quietly.
The most common way in is depressingly ordinary: an email attachment that looked legitimate, a link in what appeared to be a supplier invoice, or a remote access service left open with a weak password.
Ransomware rarely announces itself politely. Things to watch for include:
Files that won't open
Documents suddenly fail to open, or ask for a password you never set.
Strange file extensions
Filenames ending in unfamiliar strings, or renamed entirely.
Ransom notes
Text or HTML files appearing in folders with instructions and a demand.
Sudden slowness or crashes
Systems struggling while encryption runs in the background.
Antivirus disabled
Protection switched off by something other than you.
Backups failing or deleted
Many attacks target your backups first, before the main systems.
Pull affected machines off the network immediately. Avoid powering down unless advised — a running machine may still hold recoverable data in memory.
If any backup is still connected, disconnect it now. Unaffected backups are the single most valuable asset you have.
Nothing about paying is improved by paying in the first hour and a great deal can be learned by not doing so.
Note the time you noticed, what was displayed, which machines are affected. This matters for insurers and for any investigation.
Speak to someone who deals with this professionally before you act. What looks like total encryption often isn't.
Note
If personal data has been affected, you may have obligations under UK GDPR, including notifying the Information Commissioner's Office within 72 hours where the breach is likely to result in a risk to people's rights and freedoms. Take advice on this promptly.
The phrase in the title is not a slogan. It reflects what actually happens to a great many businesses that pay.
Ransomware recovery and data recovery are different disciplines, but they overlap more than people expect. In many cases we can recover substantial amounts of data from encrypted systems — particularly where encryption was interrupted, where only parts of a drive were affected, or where shadow copies, temporary files and deleted originals remain intact on the underlying storage.
This is why the advice not to power things down and not to start "cleaning" the machine yourself matters. Every subsequent write to a drive reduces what can be recovered.
If you're dealing with an attack right now, call us before you take any further action. Early advice costs nothing and often changes the outcome considerably.
Don't pay before you've spoken to us. We'll tell you honestly what can be recovered from your systems and what your options are.