The spread of ransomware WannaCry raising fears big. Why not, these malicious programs can go quietly to the computer without being noticed, then encrypts the data so that the computer is locked and could not be used. WannaCry not indiscriminate in attacking the victim.
An incident occurred in the United Kingdom, where at least 16 hospitals are victims of WannaCry. In just less than two days, the ransomware had already spread to 99 countries and infects tens of thousands, if not hundreds of thousands, of computer system.
Compared to other ransomware, WannaCry more sophisticated and dangerous. Ransomware not need user intervention to be able to infect your computer. Necessity to spread is just a connection to the network.
What is the secret? WannaCry exploits cyber weapons tool owned by the US intelligence service, the NSA, which in April was stolen and leaked by a group of hackers named Shadow Broker. A tool named “EnternalBlue” that exploit security gaps in the Windows operating system through the execution of SMBv1 remote code.
Once successfully logged into a single computer in an Office environment that is connected in LAN network, the worm in the WannaCry will automatically find another computer in the network that are vulnerable to infection.
As a result the fatal: computers under attack will be locked. The data is encrypted so that it cannot be accessed. Malware simply displays a message on the computer screen which asks for a ransom of $300 in the form of virtual currency Bitcoin transactions that could not be traced.
If a ransom was paid to their digital wallet, there is no guarantee that the makers of ransomware really will send the encryption key to unlock the data on the victim’s computer.
How To Prevent Ransomware “WannaCry”
How to prevent not to become a victim? So that the user does not switch on and connect your computer directly to a LAN or the internet. Previously, users are suggested in order to advance backup important data and update Windows.
This is because the security gaps exploited by the WannaCry are actually already patched through Windows by Microsoft security patch in March 2017 and then, but not all of the computer to install the update.
Here are the steps to prevent ransomware infection WannaCry. More can be seen below:
- Unplug your LAN connection and turn off Wi-Fi computer to prevent infection.
- Update Windows security by installing the patch MS17-010 can be obtained at the following link. Windows XP users recommended that replace the operating system to a later version because this version of the OS is not support the security patch from Microsoft.
- Do not enable the macros function.
- Disabling SMB v1 functions.
- Blocking port 3389 and 139/445.
- Update anti-virus and anti-ransomware software.
- Always backup important files on your computer and save it elsewhere, if possible in storage that are not connected to the network or the internet.
The steps above if reasonably cannot be done on your own, you can ask for the help of colleagues who understand or to the IT team office.
Thank you very much for reading How To Prevent Ransomware “WannaCry“, hopefully useful.
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