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7 Threats & Disruptive Forces Changing the Face of CybersecurityThis Dark Reading Tech Digest gives an in-depth look at the biggest emerging threats and disruptive forces that are changing the face of cybersecurity today.
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Here’s some insight on what's working – and what isn't – in the data center.
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3 Comments
User Rank: Ninja
11/4/2015 | 3:03:56 PM
Encrypt your data. CryptoWall can't encrypt files that are already encrypted by the end user.
The data can be decrypted on access which would lock the files currently opened. When the file is closed it is
automatically re-encrypted in realtime. As an extra layer of security it is also possible to encrypt volume shadow
copies of the files as the behavior of CryptoWall will automatically sdelete (Secure Delete) all shadow copy data
on the infected machine. I am no way suggesting not to backup your data. However, a proper retention policy
should also be correctly set to seven or more days. If a backup whether it be to a local, network drive, or cloud
based is not encrypted there remains the risk of the files being encrypted by the ransomware and changes of
modified files by CryptoWall propagating and overwriting the original backup of end user data. Also, CrytoWall
only affects files by extention (ie .docx, .qbw, .xlsx) If a file extention is modified to something completely
obscure in no relation with any application they will remain unaffected by this ransomware.