SANS Digital Forensics and Incident Response Blog: Category - Evidence Analysis

Understanding EXT4 (Part 3): Extent Trees

Hal Pomeranz, Deer Run Associates There's one more big concept we need to cover before you can really start decoding EXT4 file systems. As I mentioned in Part 1 of this series, you can only have a maximum of 4 extent structures per inode. Furthermore, there are only 16 bits in each extent structure for … Continue reading Understanding EXT4 (Part 3): Extent Trees


Understanding EXT4 (Part 2): Timestamps

Hal Pomeranz, Deer Run Associates Well I certainly didn't plan on three months elapsing between my last post on EXT4 and this follow-up, but time marches on. That was supposed to be a clever segue into the topic for this installment- the new timestamp format in the EXT4 inode. OK, I know what you all … Continue reading Understanding EXT4 (Part 2): Timestamps


Digital Forensics Case Leads: Pwn2Own 2011 underway

Last week I was in Boston teaching SANS FOR 408: Computer Forensic Essentials, now renamed to Windows Forensics In-Depth. Thank you to all those in my class, it was fun. Huge thanks to my facilitator, Mike. I mention the course here, because I had a mix of students from experienced veterans to those brand new … Continue reading Digital Forensics Case Leads: Pwn2Own 2011 underway


Computer Forensics How-To: Microsoft Log Parser

As any incident responder will agree, you can never have too many logs. That is, of course, until you have to analyze them! I was recently on an engagement where our team had to review hundreds of gigabytes of logs looking for evidence of hacking activity. I was quickly reminded of how much I love … Continue reading Computer Forensics How-To: Microsoft Log Parser


Digital Forensics Case Leads: SMS botnet has ripples into mobile forensics; New iOS forensic tool; New USB encryption tool; Record a cop, go to jail? Free RSA Expo Pass and Free Beer!

This week's case leads features a new SMS botnet attack that has ripples into mobile forensics; Guidance Software releases an iOS forensics tool; an in-depth legal analysis of a recent ruling that could encourage lawyers to sue businesses due to downstream liability, and these lawsuits could involve considerable e-discovery; SIFT wins forensic award; PLUS get … Continue reading Digital Forensics Case Leads: SMS botnet has ripples into mobile forensics; New iOS forensic tool; New USB encryption tool; Record a cop, go to jail? Free RSA Expo Pass and Free Beer!