Attacks/Breaches
9/26/2008
03:30 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Portrait Of A Computer Forensic Examiner

While data can be recovered from any computer, expert Ives Potrafka believes that corporate IT departments have far less control over what happens on PCs used for work.

Ives Potrafka, a forensic examiner with the Center for Computer Forensics, sees a lot of data theft. Those responsible tend to be ex-employees, either starting up a company while employed or going to a competitor and taking trade secrets.

According to Potrafka, when insiders steal corporate data, they tend to do it via noncorporate e-mail accounts or using external storage media.

Potrafka spent four years as a Special Agent, Computer Forensic Examiner, and Internet Investigator in the High Tech Crime Unit in Michigan Attorney General's Office, and served as a law enforcement officer for 24 years. "Certainly, hacks take place. ... Those are the ones that makes the papers," he says. "But it's more common that it's insider-related and employee-related."

Nowadays, Potrafka tends to work for clients in civil actions, though he still works on the occasional criminal case. A lot of his work involves e-mail analysis and keyword searches.

"A few years ago, we did a case for a major banking corporation where the president of the corporation and the majority of the staff, all within a two-to-three day period, resigned and went to another bank," he said. "We got a call on a Saturday from IT at the bank asking us to come look at some computers at the bank on Monday. Rather than wait until Monday, we came in on Saturday night and started looking at them and by Monday morning, we had found out that the president plugged in an external hard drive to his computer two days before he resigned."

The bank's attorneys then filed a legal demand to see that hard drive, Potrafka said. When they received it, they found stolen files.

Encryption can be an issue, but it isn't a common problem. "If a file is truly encrypted, without the key, you're not looking at it," Potrafka said. "But very honestly, we don't see much of it."

Potrafka participated in a homicide investigation several years ago in which he was asked to construct a timeline that showed when a murder victim had been using her computer.

"It was a case where the husband came over and killed his ex-wife," he said. "She had been connected to America Online. And the America Online records showed she was online the entire time, from like 8:00 p.m. or 9:00 p.m. until 7:50 am the next morning, when her son found her deceased. We were asked to look at the computer and show when she was really using it. ...Working with Microsoft and America Online, we were able to show that she stopped using the computer about 10:50 p.m., which is about her estimated time of death. It kind of blew a hole in the husband's defense."

Previous
1 of 2
Next
Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2015-0279
Published: 2015-03-26
JBoss RichFaces before 4.5.4 allows remote attackers to inject expression language (EL) expressions and execute arbitrary Java code via the do parameter.

CVE-2015-0635
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to spoof Autonomic Networking Registration Authority (ANRA) responses, and consequently bypass intended device an...

CVE-2015-0636
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (disrupted domain access) via spoofed AN messages that reset a finite state machine,...

CVE-2015-0637
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (device reload) via spoofed AN messages, aka Bug ID CSCup62315.

CVE-2015-0638
Published: 2015-03-26
Cisco IOS 12.2, 12.4, 15.0, 15.2, and 15.3, when a VRF interface is configured, allows remote attackers to cause a denial of service (interface queue wedge) via crafted ICMPv4 packets, aka Bug ID CSCsi02145.

Dark Reading Radio
Archived Dark Reading Radio
Good hackers--aka security researchers--are worried about the possible legal and professional ramifications of President Obama's new proposed crackdown on cyber criminals.