Wow, these ransomware events (or attacks) are causing havoc worldwide. The most recent attack is Petya (see below) where it will encrypt the files on your computer and hold your computer for ransom. Very important that you keep your computers patched with current Windows updates and security software updates.
Ransomware is alarmingly quick – Ransomware takes between five and 20 minutes to encrypt every relevant file on the average hard drive (depending on the speed of the machine and the number of files). That means that even the slowest, single-threaded ransomware can encrypt several potentially important files in seconds. Since ransomware works quickly, detection and response time is of the utmost importance, which may be problematic for certain behavioral-detection solutions.
I am seeing many of the leading security software companies coming out with various products to protect against ransomware. Big money in this… If you want something FREE that will add a level of protection to your computer, give Cybereason RansomFree a look. In a nutshell, this software uses a unique behavioral approach in detecting and blocking ransomware at the entry points where ransomware typically initiates the encryption process. When the program detects ransomware activity, it suspends the activity and displays a pop-up message warning you about an imminent attack. You will then have the option to easily stop the attack by making just one mouse click.
SOURCE: Cybereason RansomFree