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Ransomware: 5 Threats To Watch
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Marilyn Cohodas
Marilyn Cohodas,
User Rank: Strategist
7/18/2014 | 3:23:23 PM
good overview
How did you select the order of these threats, Kelly? In terms of ransom, complexity, date?  
Kelly Jackson Higgins
Kelly Jackson Higgins,
User Rank: Strategist
7/18/2014 | 3:36:17 PM
Re: good overview
Mostly by prevalence, although the data is a moving target these days!
Marilyn Cohodas
Marilyn Cohodas,
User Rank: Strategist
7/18/2014 | 3:43:31 PM
Re: good overview
Definitely a moving target! Thx,,,
Robert McDougal
Robert McDougal,
User Rank: Ninja
7/22/2014 | 9:37:56 AM
Re: good overview
I volunteer with a few non-profits in my area and unfortunately one of them was completely crippled by the Cryptowall ransomware.  We were able to restore most of the data from backup but not all.  
Kelly Jackson Higgins
Kelly Jackson Higgins,
User Rank: Strategist
7/24/2014 | 10:45:40 AM
Re: good overview
Were you able to determine how they were infected? Did any of them actually pay the ransom?
Robert McDougal
Robert McDougal,
User Rank: Ninja
7/24/2014 | 10:59:06 AM
Re: good overview
The attack vector was an email pretending to contain a receipt for a large purchase.

This time the ransom was not paid.  However, when cryptolocker was brand new the President of one of these non-profits fell victim.  She had a bad habit of not storing her data on the server (which was backed up) and instead stored the data locally.  As such, she had 10 years worth of data encrypted and no way to recover it.

Long story short, we paid the ransom and were able to decrypt the files.
Kelly Jackson Higgins
Kelly Jackson Higgins,
User Rank: Strategist
7/24/2014 | 11:14:36 AM
Re: good overview
Wow--that's a nightmare scenario with a relatively good ending.
Robert McDougal
Robert McDougal,
User Rank: Ninja
7/24/2014 | 11:50:00 AM
Re: good overview
Very much so a nightmare...

However, other than costing a little over $500 it served as a valuable lesson for the President.
Marilyn Cohodas
Marilyn Cohodas,
User Rank: Strategist
7/24/2014 | 1:37:40 PM
Re: good overview
But did it change the security culture at the non-profit ? Any impact on practices, user ed, etc? 
Robert McDougal
Robert McDougal,
User Rank: Ninja
7/24/2014 | 1:58:15 PM
Re: good overview
I was asked to give a presentation on how to spot malicious and phishing emails shortly afterwards.   I gave a 30 minute presentation that included several hard examples including the email that caught the President.

Things seemed great for a while but less than 6 months later, another employee(who was in the presentation) fell for another email.  Sometimes I just don't know what to do...
Marilyn Cohodas
Marilyn Cohodas,
User Rank: Strategist
7/24/2014 | 2:03:43 PM
Re: good overview
I have heard a similar version of that story from enterprise security pro many, many times! I guess the takeaway is that you need to give that presentation every couple of months... 
Robert McDougal
Robert McDougal,
User Rank: Ninja
7/24/2014 | 2:50:53 PM
Re: good overview
I think you are exactly correct.  Sometimes I lose track that I see this stuff on a daily basis and I take being able to spot it for granted.  The normal user isn't naturally cautious and as such prone to falling for scams.  I have to tell myself that if I didn't know better, it would be very scary to receive a receipt for $2500 in furniture and I would want to know right away what was going on.

Constant education is the answer.
chriscinfosec
chriscinfosec,
User Rank: Apprentice
7/22/2014 | 9:26:49 AM
Ransomware a growing threat
We see a lot of blocked ransomware attempts at Invincea, increasingly being spread through malicious ad networks ("malvertising").  Most small-to-medium sized businesses have much less risk from the theft of IP or click-fraud bots if they get infected -- ransomware on the other hand encrypts your files making them inaccessible.  This can jeopardize your business very quickly and is almost impossible to recover from.  Paying the ransom doesn't always work...


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