From the mind of Seth Holloway, to you
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  • Flash, you sneaky bastard!

    Posted on February 21st, 2010 Seth No comments

    Flash, the popular multimedia platform that helps make websites more interactive, has cookies separate from your web browser’s cookies. They’re called local shared objects (LSO) and they may be a security hole–like all things Flash ;-)

    There are a number of directories where the flash cookies may be stored. For example, on Mac OS X, LSOs are stored in two locations:

    • ~/Library/Preferences/Macromedia/Flash\ Player/#SharedObjects/
    • ~/Library/Preferences/Macromedia/Flash\ Player/macromedia.com/support/flashplayer/sys/

    And there are more possible! For a detailed list, check the list of locations on Wikipedia’s LSO entry.

    You can manually navigate to these locations and delete nasty ad-tracking/malware-hosting objects; however, while deleting unwanted cookies is worthwhile, it’s not a good long-term solution. I recommend you update your Flash settings (this interface also allows you to delete your LSOs) now! There are several tabs to look through, but don’t worry–it’s quick. Make sure you deny access to your camera and microphone! For finer grained control, the Firefox extension Objection helps track and eliminate Flash cookies.

    Whatever your strategy, I wish you luck!

  • The on-screen keyboard: A hint more security

    Posted on June 8th, 2009 Seth 1 comment

    Keyloggers are rampant! They are the most prolific trojan horse and they can easily transmit your passwords to bad guys. They’re simple and effective.

    Keyloggers work by intercepting and transmitting keystrokes, so a simple countermeasure is to avoid keystrokes. While this is impractical as a general approach, you can add a hint more security to your workflow by inputting passwords (or even bits of a password) via an on-screen keyboard.

    In Windows, it is very easy to turn on an on-screen keyboard:

    Start -> All Programs -> Accessories -> Accessibility -> On-Screen Keyboard

    Once the keyboard is up, simply set focus on an application then use your mouse to press the keys on the on-screen keyboard.

    Does anyone have evidence that on-screen keyboards are also vulnerable? Any other simple security tips?

  • Forget Ocean’s 11, these heists are all digital

    Posted on January 20th, 2009 Seth No comments

    Over the holidays Wired published an article, the Seven Best Capers of 2008, that ran down a list of crafty, entertaining schemes that ultimately resulted in the perpetrator getting caught. I encourage you to read the entire article; you’ll find that every story involves a digital component. Here’s the top rated heist:

    The Snohomish Smokescreen

    In September, a robber disguised as a gardener pepper-sprayed an armored car driver using a pesticide sprayer and ran off with a bag stuffed with $400,000 in cash. When police arrived seconds later, they found the sidewalk crowded with dozens of men decked out in the same attire as the perp: blue shirt, Day-Glo vest, safety mask and glasses. While the cops hacked through a forest of suspects, the real perp fled to a nearby creek and escaped in a waiting inner tube.

    Turns out the unwitting decoys had been lured to the crime scene by a Craigslist ad that promised construction work to those showing up in a “yellow vest, safety goggles, a respirator mask … and, if possible, a blue shirt.” A month later, following a lead from a homeless man who witnessed the preparation for the Brinks job, police arrested 28-year-old Anthony Curcio fresh from a Las Vegas vacation. Curcio is now charged with “Interference with commerce by threats or violence,” because “Pulling the most awesome robbery ever” isn’t listed in the U.S. code.

    Missing from the list are the scams by Wall Street, car companies, and any other bailout recipient as well as individuals like Bernie Madoff :)

    While not as entertaining to watch as the daring Ocean’s 11, the list helps to highlight how new media (using twitter to create flashmobs, for example) and cybercrime are the way of the future. A realistic movie about any one of these heists would involve a kid at a computer for days on end, slowly accumulating wealth.

    Stealing physical items was much easier to catch and prosecute; with modern plots siphoning off fractions of a cent per transaction, we face a brave new world. America has to increase technological infrastructure, educate citizens about risks, and allow greater research into security.

    What do you think? Have I misinterpreted? What’s the future of crime and high-stake heists? How can we prevent it or at least mitigate the losses?

  • Do we need AV software?

    Posted on December 14th, 2008 Seth 2 comments

    Do we need AV software? It is naive to think that safe practices will protect you–there are simply too many ways to get into a system. You need something to protect your computer, and good AV software won’t hurt.

    I was reading a lifehacker article asking readers about antivirus (AV) software. The range of knowledge conveyed in the comments is ridiculous. Some users claimed they never had a virus. There are known botnets with over a million machines. I doubt that all million machines are owned by a single individual, which means there are multiple users who are either willingly allowing someone to use their machine, or the multiple users are unaware of the heist. With the sophistication of modern viruses (rootkits, automatic replication, dynamic signature changing, etc), it is silly to claim you would even know if you had a virus.

    A couple users claim that there had never been a virus for Linux. I don’t even know where to start on that one. Definitely false. Any script kiddie could gain access to a Linux system that had not been hardened. There are a number of measures a system administrator can take to mitigate threats on Linux, but not every Linux user is a sys admin. Services like ssh being on by default increase the risks greatly. The power of a Linux command line and access to powerful development tools make subsequent attacks easier to launch.

    People seem to define virus strangely. Some viruses like vundo trigger a lot of pop-ups, but won’t necessarily crater your system. Other viruses that do not brick your machine are passively collecting information, waiting for further instructions, or launching attacks. You don’t even have to open a file to be at risk. You don’t even have to be online; infected USB keys (and other input devices) can infect a computer that isn’t online.

    It’s not just dumb users either. Viruses come from your friends and people you trust. Elaborate social networking hoaxes are being performed everyday, and everyday they get more convincing. Malware distributors have some of the most professional websites online. Their UI and interface design mimic trusted providers so a quick glance will not immediately reveal a problem. You have to realize and appreciate the ingenuity of the nefarious Internet warriors–they’re smart, creative, and talented.

    Comparisons have shown that no one piece of antivirus software will catch all viruses, so your best bet is to

    1) be safe:

    • Don’t open links in emails. Type the URL into the address bar on your own.
    • Be mindful of what your friends are sending you. Would Suzy really send you a link to get rich quick?
    • Avoid the worst of the web (pornography, gambling, warez)

    and 2) run a few different tools:

    So do we need AV software? Yes. You can never be totally safe, but you can mitigate your risks. Use common sense, a few tools, and perform frequent backups. Good luck!

  • America needs to harden its cyber security

    Posted on December 8th, 2008 Seth 1 comment

    Business Week has a nice article on how the US is falling behind in cyber security. It’s remarkably apropos after a couple high profile security stories earlier this year: computers on the International Space Station and an Iranian IT worker was executed after being found out as a spy. Are there viruses on US government computers on land? Do we have spies working in our governmental IT department? The answer to both questions is likely yes, so what are we doing about it?

    Computers are used for everything! Unfortunately, America is falling behind in security research and, more importantly, countermeasures. I am glad to see the recommendations for President-Elect Obama; I just hope Obama takes the threat to heart and hardens America’s cyber security. If we do not, no amount of firepower will protect us from attackers controlling our computers that are controlling the bombs.

    **UPDATE**

    Michael Masnick over at Techdirt pointed at that everyone knows we need better security and asks what we should do? To start, fund serious research into security. Establish courses on security in schools nationwide so that students can keep up with trends, and learn how to do things properly. Next, allow hobbyists a way to polish their skills within fear of being thrown in jail. Increase the number of jobs in cyber security and take cyber threats seriously. With the education in place and the government in line, we need to harden individuals machines. The government can (help) develop and promote helpful software: firewalls, antivirus, antispam, and intrusion protection applications. Allow Microsoft a one-time ability to patch all users systems and subsidize the operation if need be. Finally, increase the punishment for people operate outside the framework or who pass the buck (posting links to infected sites).

  • Governess Palin hacked

    Posted on September 18th, 2008 Seth No comments

    Alaska Governess Palin had her Yahoo mail account hacked recently. The hacker released a screenshot of one email:

    Palin leaked email

    It is out of context, but Palin seems loyal, friendly, and helpful. I’m actually impressed.

    I find the attack amusing, but I fear that going after high profile politicians is not the way to achieve anything. The hacker has likely hastened the end of net neutrality and Internet anonymity as politicians clamor for control. For hackers, of course, this is no worry because they’re not going to be traced anyway, but it’s bad for the rest of us.

  • Encrypt your Gmail

    Posted on August 20th, 2008 Seth No comments

    I’m a big fan of the Google suite of products. I’ve been connecting via https for a while now, but Google has now made it easier. There’s a great article on Wired about encrypting your Gmail. Anyone using the Google services should do this immediately. Here’s a quick how-to:

    • Log in to Gmail (https://mail.google.com/mail/)
    • In Gmail, click on “Settings” in the top right corner (beside your username).
    • Scroll to the “Browser connection” section at the bottom of the page
    • Click the radio button for “Always use https”
    • Click the “Save changes: button at the bottom of the page
    • Profit