How to prevent Ransomware?

There are a number of defensive steps you can take to prevent ransomware infection. These steps are a of course good security practices in general, so following them improves your defenses from all sorts of attacks:

• Keep your operating system patched and up-to-date, to ensure you have fewer vulnerabilities to exploit.
• Don't install software or give it administrative privileges unless you know exactly what it is and what it does.
• Install antivirus software, which detects malicious programs like ransomware as they arrive, and white listing software, which prevents unauthorized applications from executing in the first place.
• And, of course, back up your files, frequently and automatically! That won't stop a malware attack, but it can make the damage caused by one much less significant.

Ransomware removal

If your computer has been infected with ransomware, you'll need to regain control of your machine.
Important steps are to:

1. Reboot Windows 10 to safe mode
2. Install anti malware software
3. Scan the system to find the ransomware program
4. Restore the computer to a previous state

But here's the important thing to keep in mind: while walking through these steps can remove the malware from your computer and restore it to your control, it won't decrypt your files. Their transformation into unread ability has already happened, and if the malware is at all sophisticated, it will be mathematically impossible for anyone to decrypt them without access to the key that the attacker holds. In fact, by removing the malware, you've precluded the possibility of restoring your files by paying the attackers the ransom they've asked for.

Ransomware examples

While ransomware has technically been around since the '90s, it's only in the past five years or so that it's really taken off, largely because of the availability of untraceable payment methods like Bitcoin. Some of the worst offenders have been:
CryptoLocker, a 2013 attack that launched the modern ransomware age and infected up to 500,000 machines at its height TeslaCrypt, which targeted gaming files and saw constant improvement during its reign of terror SimpleLocker, the first widespread ransomware attack that focused on mobile devices WannaCry, which spread autonomously from computer to computer using EternalBlue, an exploit developed by the NSA and then stolen by hackers NotPetya, which also used Eternal Blue and may have been part of a Russian-directed cyber attack against Ukraine Locky, which started spreading in 2016, was "similar in its mode of attack to the notorious banking software Dridex."

courtesy: https://www.csoonline.com/article/3236183/ransomware/what-is-ransomware-how-it-works-and-how-to-remove-it.html

 
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