Introduction
Every week, thousands of users suddenly discover that their files are encrypted
and a ransom note appears on their screen. Ransomware is a form
of cyberattack that locks your data and demands payment to recover it.
Before panicking or paying, follow these essential steps.
free and proven
solutions to try before seeking professional help.
1. Immediately isolate the infected computer
The first reaction is crucial: cut off all network connections .
The majority of ransomware spreads on shared drives and internal servers.
- Disconnect the network cable or Wi-Fi.
- Unplug the power cord if necessary.
- Block outgoing traffic via the firewall.
The goal is to prevent the virus from encrypting other computers or servers.
2. Do not touch anything while the ransomware is active
Do not attempt to restore any files yet.
As long as the ransomware is running, any new files copied are likely to be encrypted as well.
If you know how, identify and terminate the malicious process.
Otherwise, simply cut the power: it's better to stop it too soon than too late.
3. Remove the malware carefully
Use a good analysis tool, but with caution:
some antivirus programs can delete essential files (such as local decryption keys),
making your data unrecoverable.
Recommended utilities: HitmanPro or Emsisoft Emergency Kit .
Scan only to remove the ransomware, not the text files or ransom notes.
4. Identify your ransomware
Go to the ID Ransomware .
This free service allows you to identify the exact strain of the ransomware
by uploading:
- The ransom file (e.g.,
readme.txtorinfo.html) - Or an encrypted file from your folder
If your ransomware is known and decryptable, the site will directly offer you
a free decryption tool (for example for variants like Jigsaw ).
5. If the ransomware is not yet decryptable
This is the most common scenario.
In this case:
- Check if you have offline backups (hard drive disconnected, cloud not synchronized).
- Restore your data from these backups after you have completely cleaned the computer.
If your backups were connected, they may also be encrypted.
You can then register with ID Ransomware to be notified if a decryption tool becomes available.
6. The worst-case scenario: no backup, no known solution
If your data is critical and no free solution exists:
- Do not pay the ransom immediately.
- Consult a cybersecurity expert first.
- In some cases, researchers or authorities manage to recover the keys later.
Paying fuels crime. Even if some hackers "negotiate," there's no guarantee
they'll return your files.
7. After the incident: rebuild and protect
- Reinstall your system from scratch.
- Install a reliable antivirus and firewall.
- Create automatic backups to an offline storage device.
- Never click on a suspicious attachment or unknown link again.
Conclusion
Being a victim of ransomware is a shock, but there are ways to take action without paying.
Between free tools like ID Ransomware and public decryptors,
many threats can be neutralized without spending a penny.
The most important thing: prevention is better than cure .
Back up your data, update your software, and stay informed.
Stay vigilant, stay safe.