Data theft investigation

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Beatrice

New Member
May 1, 2018
3
0
#1
Hi. I’m seeking for some opinions. I am attached to a local banking company in Malaysia. Recently one of my ex-staff in the Customer Relation department has left the company with less than 24 hrs notice resignation. Other staffs were perplexed and also kept thinking about why. Someone has taken his own initiative to check his computer station (I’m not quite sure that guy was doing) but he suspects there could have been some data from has been stolen. All panicked. How can we investigate that possibility? What information we should look into? Is there any quick way to prove something of data theft possibility? The nightmare is, worst case scenario, he has copied some of confidential data of high customer profiles and could have sold it. Should we invite computer forensic team from local enforcement agencies or we do it the 'forensic' thing?
 

Lids

New Member
Experienced Member
Oct 23, 2018
22
Ratings
19
3
#2
I realise this is an old thread now so the investigation may have come and gone - would be interesting to hear how it went if so. But in general, you want to isolate the suspected machine as soon as possible after believing something untoward has taken place. Then you should absolutely have someone with forensic experience take a look at it -- this will ensure that if the matter needs to go to court, that it can be presented in a forensically sound way ... the person that took their own initiative may have ended up destroying forensic artifacts on the system or providing misleading information when an investigation does take place.

As for the investigation itself, an analysis of MRU's, USB device connections, Shellbags logged to network locations and removable devices, Link files / Jumplists, etc in the lead-up to the person leaving could be performed to produce a timeline of events and provide some level of comfort as to whether anything of concern has occurred. The investigation strategy will depend on length of time since the incident is suspected to have taken place, user policies, if it's a shared device, privacy laws, etc.
 

azuleonyx

Member
Experienced Member
Oct 20, 2018
33
Ratings
29
18
Charlotte, North Carolina Area
cyberfenixtech.blogspot.com
Twitter
https://twitter.com/AzuleOnyx
#3
One thing you are going to need to remember about "doing your own thing" for forensics is how do you want to proceed if you do take legal action. If you or someone else is not properly trained nor has credited experience, then all the forensic work is lost. This could be a huge hit for stolen data cases where company propriety information is stole and needs to be protected. So, sometimes, better to talk to local law enforcement about performing the forensics on behalf of the company.

Also, in any company, forensics starts with a solid security program where the proper care is taken to log and document as much as relevant per company security risk assessment.
 

Farinka

New Member
Oct 31, 2018
4
1
#4
It is necessary to collect the maximum number of documents and other things that have been preserved. No matter how much they lay, the main thing is that there is any information. Also, you need to look at the computer log files, all actions are displayed there and they can help prove the guilt.
 

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