Thursday, December 31, 2009

The Passwords Twitter doesn't want you to use


The Wundercounter blog has a list of all of the passwords embedded in Twitter's signup page. The list is a pretty broad list of bad passwords that Twitter users probably use more than we might like to hope after years of explaining the need for good passwords. Old favorites like 123456, abc123, and password show up, as does computer, many first names, and of course, twitter.

It seems like most organizations have at least one common password that users tend to gravitate to. At colleges and universities, it tends to be a school spirit oriented password, and for websites, it often involves the name of the site. What's your organization's oft joked about common password?

(flickr Creative Commons attribution licensed image courtesy 7son75)

Tuesday, December 29, 2009

Digital Photo Forensics

HackerFactor's Sec-C blog has a great writeup and analysis of a Photoshop Disasters image. There are a lot of useful techniques to learn here if you're ever asked to check if an image was Photoshopped.

Tuesday, December 15, 2009

Anti-Forensics Tools - DECAF to your COFFEE

Anti-forensics tools meant to counter mainstream forensics packages aren't new, but DECAF, a response to Microsoft's COFFEE tools are a pre-packaged forensic toolkit looks like an interesting entry into the field. Those worried by COFFEE's described capability to "decrypt passwords and analyze a computer’s Internet activity, as well as data stored in the computer" appear to have at least one possible way to counter it.

Fans of The Big Hit are likely wondering when the anti-anti-forensic device will be released...

Monday, December 14, 2009

The Importance of Background Checks

The Department of Homeland Security recently learned the importance of background checks the hard way, as a fugitive wanted on a national arrest warrant for insurance fraud was found to be working for a DHS office. This serves as a great reminder that background checks are a really inexpensive way to make sure that staff working in potentially sensitive positions (or with access to sensitive data) are worth reviewing.

Thursday, December 3, 2009

Free Security Software - A Checklist for Setting Up Your New PC

The explosion of new, inexpensive PCs has resulted in a lot of systems that didn't come with pre-packaged software, or that simply come with a trial antivirus package. Is it possible to build a capable security suite for your new system without spending money?

Yes!

Antivirus and Anti-Spyware

Get a copy of AVG's free product. It is relatively lightweight, runs well even on netbooks, and it receives good reviews.

Windows Defender is increasingly capable, and is a good second choice to install.

I also continue to recommend SpyBot as a good general purpose anti-spyware tool.

Virus Recovery and Malware Removal

MalwareBytes remains my default recommendation for those who need to recover from a virus infection.

Password Storage

I continue to use Password Safe for most of my password storage needs, but LastPass's online storage system is an excellent option as well. You can find my previous LastPass article here.

Browsers

Start with Firefox, and if you're comfortable with it, add plugins such as NoScript. Firefox's autoupdate capability as well as the wide variety of security controls available make it a great choice as your default browser.

With these free tools, you'll be well on your way to secure computing - for free!

Saturday, November 28, 2009

The Speedy Evolution of iPhone Worms

The popularity of iPhone worms targeted at jailbroken iPhones with the original SSH password that I described recently continues to grow. The exploits have also become more threatening, moving from the Rickrolling ikee worm (whose creator was recently hired by an Australian iPhone software development Mogeneration) to the more threatening worms, including one that grabs your private data from the phone.

In chronological order so far worms have been:

  • Held iPhones hostage for 5 euros (November 2nd, ihacked)
  • Rickrolled affected users (November 8th, ikee)
  • Stolen personal data such as contacts, email, SMS messages, photos, music, and other users data (November 10th, iPhone/Privacy.A)
Of note, Sophos provides a very nice writeup and commentary on ikee.

Of course, as theappleblog notes, this threat could be much worse in future generations, as the technique is quickly improved and as more iPhone aware coders take advantage of the platform. Right now, a lot of the techniques used by Windows worms haven't shown up - the self replication capabilities are rudimentary, if there at all, and the concealment methods are largely simply based on file location.

The good news continues to be that the worms only go after phones with the default jailbroken SSH password, and that changing that password on a jailbroken phone will prevent the exploit. The bad news is that malware writers are likely now building toolkits that will easily integrate with the next iPhone exploit - and all that is really needed is an OS level vulnerability that can be remotely exploited to make iPhones a treasure trove of data for successful attackers.

The iPhone will continue to be an attractive target, both because of the desire of the user base to expand the phone's capabilities via jailbreak, and because of the user data and network access that a hacked iPhone can provide. I expect to see more concerted attacks on the iPhone's OS and applications over time, meaning that security and IT staff can expect to have new threats appearing on their networks - pocketable devices scanning for other devices and infecting each other may very well be our next big user initiated threat vector.

Tuesday, November 17, 2009

NIST 800-53 v3 controls in database form - No Extra Charge!

Have you ever been asked to implement standards for your organization - only to find out that they are buried within a gazillion page document with tables and appendices that you must pull actionable items out of? Top that off with your organizations's risk scores, cross referenced controls for the defined risk level...you get the picture. I think we all have and we can agree that it isn't much fun. This morning, a colleague pointed me to a new release from our friends at NIST. Enter NIST SP 800-53 v3 in database format. From the readme:

The NIST SP 800-53 reference database application is a FileMaker runtime database solution. It represents the security controls that are organized into families for ease of use in the control selection and specification process. The security control structure consists of three key components: a control section, a supplemental guidance section, and a control enhancements section. The priority and minimum assurance requirements (i.e., low, moderate, and high) for security controls are applicable to each control. The user can browse the security controls based on various criteria, search for specific control, and export the control to various file types, e.g., tab-separated text file, comma-separated text file, XML, etc.

The download is about 42MB and is available here. After a quick decompression, you are ready to roll. However, this beta is limited to Windows support. If you're not familiar with the NIST SP 800 family of publications, you should be. They provide a great set of knowledge, vetted security controls and are available at no extra cost.

The application itself requires no installation, and therefore, will run without administrative control over the machine you are using it on (hint - you can share it with folks like legal counsel or developers so they can enjoy ease of access). To further protect the integrity of the data, the instance runs as read only. Once up and running, you are presented with a fairly busy interface that takes a bit of browsing to understand. However, after a few minutes you can quickly find the controls you need, according to your risk impact scores, with all the supporting information at your fingertips. This truly is a helpful tool to have in your cache.