Ransomware Wanna Cry
How Ransomware Works?
It basically works on two encryption algorithm called as AES and RSA.
RSA (Ron Rivest, Adi Shamir) It is called asymmetric cryptographic algorithm. Asymmetric mean two different key uses by this algorithm. It is also called public key cryptography. One key available for everyone publically and a second one called private key kept by the user.
AES (Advanced Encryption Standard) also known as Rijndael, is a 128-bit block cipher algorithm. This encryption standard used by the U.S National Institute of Standards and Technology (NIST). But now hackers use this secure encryption in Trojan for harm windows system. This algorithm uses symmetric keys, which uses the same key to encrypt and decrypt information.
How to prevent your system from This Malware?
Don’t download anything from the malicious site. Always download any software from official or trusted website. Don’t open and click attached spam mail. Most of the report told that this virus comes from spam emails. You can use antivirus program in your system. It blocks that kind of malware who harms your computer. Update your antivirus security update regularly for remove any new threat. Regular make backup of your system data. If your system harm with this worm, you can get backup data which you have stored somewhere.