Cryptowall or similar

Cryptowall or similar

Postby MarcoBoschi » Tue Aug 25, 2015 5:19 pm

Hi to all,
So many our customer are victims of cryptowall or similar **virus** that
crypts many many files in so few minutes.
This time also dbf tables.
The tables "in use" are non affected by this tremendous and diabolic program.
So why do not open for instance in the server all dbf tables? I think to do so.
King regards
Marco
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Re: Cryptowall or similar

Postby Rick Lipkin » Tue Aug 25, 2015 5:58 pm

Marco

I have seen the destruction the crypto virus causes and it also hits .mdb ( access ) files. Back when I worked for state gov, I used advantage database server and I created a task that started in the morning before staff got in til just before the server backup started in the evening. That task went through and opened every .dbf I had effectively locking out anyone using the FoxPro interpreter from making any ( back door ) changes to my files, but it would still allow staff to use FoxPro to make queries.

With that said .. I was not worried too much about having ALL my tables opened because Advantage was server based and my servers all had battery backup and ( hopefully ) would never lose power and crash.

I will say this, it is dangerous to have all .dbf's open in a traditional DBfCdx application, just because workstations ( especially in a network environment ) tend to hang or lock up intermittently and wrecking havoc with your indexes.

No good answer here .. On one hand you have potential virus corruption ( for non opened tables ) .. on the other hand you could have index corruption with badly mis-behaving workstations. If it were me, the customer needs to understand they were a victim of their own 'self infliction' and should bear the brunt and your 'paid' services to put their business application back together... and hopefully they kept a decent off-site backup to restore their data from or ... 'shame on them'.

I did not mean to be ugly, Just my 2 cents worth.

Rick Lipkin
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Re: Cryptowall or similar

Postby sambomb » Wed Aug 26, 2015 11:20 am

Maybe if you change the extension of the DBF files will solve this
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Re: Cryptowall or similar

Postby MarcoBoschi » Wed Aug 26, 2015 12:53 pm

Rick,
my idea is to launch this program on the server
table indici contains all dbf of my program.

Code: Select all  Expand view

...
...
SELECT 1
USE indici
SET INDEX TO indici

GO TOP
DO WHILE !EOF()
      cDbf := ALLTRIM( indici->rdbf )
      SELECT 0
      ?? cDbf , ","
      USE &cDbf
      SELECT indici
     SKIP
ENDDO
inkey(0)
...
...
 


sambomb,
It might be a good idea

King regards
Marco
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Re: Cryptowall or similar

Postby Rick Lipkin » Wed Aug 26, 2015 6:21 pm

Marco

Crypto is brutal .. if you re-name the files you will need to go through your program and enter the name and extension of the table you wish to open. That may be a lot of re-coding :

Select 1
Use ( "\\server\App\MyTable.Dat" ) via "DBFCDX" SHARED

If you want to make a name change to your tables .. now may be the time to think about SQL and Ado .. get those tables on Sql Server, MySql or even Advantage Database Server and you can bundle those changes to your customer and sell it .. might just be a new opportunity!

Rick Lipkin

ps -- .Dat is not immune to Crypto
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Re: Cryptowall or similar

Postby nnicanor » Wed Aug 26, 2015 9:53 pm

Do not use network maps to open files use UNC path format.

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