Sadly, the only way to fully secure yourself against this kind of threat is to keep your personal files backed up on an external hard drive not connected to the internet.
You need to have good, off-site backup. And if you're a business then it's really important to have a really well thought-out backup plan.
We expect ransomware to stick around and continue to be a thorn in our side as long as it continues to make money for people.
If you have lost any data and at risk of failing to recover it you can contact Proformac Technologies and we will do our best to recover the data.
We have already helped some of our business clients to recover all the data safely. Contact us now for a free IT health check.