NHS Case Study

NHS Case Study

1. Applies pychological hacking to trick you to pay the required fee for file recovery.

   • Displays webcam footage to make out as if they are being watched.
   • Locks screen with message from local authority.
   • Claims you have pirated material, pornographic material, or other inappropriate content on your computer.

2. Is a form of malware which holds your files 'hostage' for ransom.

3. Likely to encrypt the files through the use of Asymmetric, as it is the most difficult to decrypt

4. Peer to Peer network - Spreads through file sharing

   • Less secure as files are shared and distributed.

5. There are numerous ways to prevent the spreading - or developing of malware

   • Ensure computer is properly protected
   • Don't download pirated material - it is highly likely to contain malware.
   • Back files up through the use of external hard drives.

6. Demanded Bitcoin

   • Bitcoin is a virtual currency.
   • Transactions - private keys. A transaction is a transfer of value between Bitcoin wallets that gets included in the block chain. Bitcoin wallets keep a secret piece of data called a private key or seed, which is used to sign transactions, providing a mathematical proof that they have come from the owner of the wallet.
   • If they send a virus instead of a bitcoin, will spread rapidly through peer to peer network

7. The virus, called Wanna Decryptor, exploits a vulnerability in Microsoft Windows software

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