All the security firms fight together in order to create decryption keys for ransomware viruses. The folks from BleepingComputer have added the master keys for the Dharma ransomware (Crysis variant) on their website and soon after that, ESET, Avast and Kaspersky have added the keys to their decryptor tools.
This means that the users that got infected with this ransomware malware and got their files encrypted with the .dharma extension can now recover their files for free, without having to pay the ransom.
Decryption tools are also available on No More Ransom, a campaign site run by Europol, Dutch National Police, Intel and Kaspersky.
If you don’t know this yet, the ransomware malware is a type of virus that encrypts all the data on the infected computer and leaves an instruction file on the desktop, to offer the necesarry information to contact the hacker and pay for the decryption key in bitcoin.
It is hard to protect your computers against it because every person with a little computer skills can create its own ransomware virus and harm others.
Personally, I use Cyberfree Anti Ransomware and I have both a Zemana antimalware license, to keep my computer safe from such viruses.