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Desktop Security Software Risks - Part 1
This is the second in a series of articles highlighting reasons why we need a new model for anti-virus and security solutions. Reason #2: the Desktop Security Software Risks The risks of placing software on the desktop are such that I will be breaking this article into two parts. Fundamentally we think of having software on our desktops as a good thing. I love downloading or installing new packages and seeing what new creative things people do to the user interface or what they do to make certain aspects of my life easier or more fun. But there are problems inherent with software that resides on the desktop, especially security software. All developers will know what I mean. First and foremost, desktop software can be reverse engineered. What's that mean? Have you ever inadvertently double-clicked on a file and had garbage show up or seen something that looks similar to this? http://www.checkinmyemail.com/Articles/image001.jpg The old hex dump. Programmers will know it well. We actually spend a good deal of time trying to read this stuff. Basically, if there are programs that can (and do) turn instructions like the following If UserBirthDate < "01/01/1960" then IsReallyOld = "Yes Else IsReallyOld = "No" End If into something like the picture above, then the reverse is true: people have developed software that can take that gobbeldy-gook in the picture above and turn it somewhat into the if-statement I wrote out. The reversing software won't know that I had an item called UserBirthDate, but it will know I was testing for a value of January 1, 1960 and it will be able to say that based on that value I set another item to Yes or No. So now we install our fool-proof anti-virus software on our desktop (or our firewall for that matter). Well, so too can a virus author. And that virus author or hacker will also have gotten a copy of the latest reverse-engineering software from his local hacking site. He now goes upon his task of reverse-engineering the software and then trying to decipher the results. It's not easy but it can be done. Unfortunately, vendors know this and understand this as an acceptable risk. The problem here is that your security software is at risk. If your vendor codes an error, the virus author can and will detect it. For example, if your vendor should exclude a file from scanning, it's possible the virus author will figure out which file (or type of file) that is and bury his code there. If the vendor excludes files from scanning or heuristics, it's possible that virus author will figure out a way to corrupt that file. That being said, there are other risks. As we have said, once software is on the desktop it affords virus authors an opportunity to reverse-engineer security software. The knowledge that reverse-engineering provides is invaluable to a virus author when building his next software attack. Third, virus authors can learn where the anti-virus vendors put there software and put the links to their software (directory folders, registry entries, etc.). This too is invaluable information. In fact, in some ways it teaches people intent on writing malicious software clues as to how to infiltrate the computers' operating system, where registry entries need to be made to force software to be loaded every time a computer is started, etc. This information is generally available all over the web and in manuals for operating systems, especially manuals on such subjects as the Windows Registry. But having the software teach you where things belong to be effective is powerful knowledge. Lastly, and perhaps most significantly, is the issue of forebearance. The anti-virus vendors usually know more about the potential exploits inherent in programs than virus authors but they are bound by the fact that should they try to prevent them before the exploits occur, they could be branded as irresponsible for teaching virus authors about these very exploits. For example, when Microsoft first released the macro capabilities of Word, anti-virus vendors immediately realized the potential for danger in macros, but they were handcuffed. If they released software that disabled macros before the first macro virus was ever released, they would signal to virus authors the inherent destructive powers of macros. They chose instead to wait, handcuffed by the limitations of desktop software. Until the Internet there really has been no better medium for delivering virus solutions than desktop software. It was relatively inexpensive to deploy (either market the software and sell it in stores or provide free downloads on bulletin boards and web sites). It is, however, expensive to keep updated in terms of time and effort, even with automated update systems. The Internet caused several things to happen: by becoming a powerful medium for sharing files, whole families of viruses disappeared practically overnight (boot sector viruses, for example); by becoming the option of choice for sharing files, it was easier to infect a single file and have thousands download it. A better solution is to place the security software in an offsite appliance of its own making. All Internet, intranet, networking connections flow through the appliance. Selling off the shelf hardware appliances with built-in security software is better than a desktop software solution but it still suffers -to a lesser extent- from the pratfalls that desktop software falls prey to. Even better is to create a service that a 3rd party vendor manages in a secure environment. In such an instance both the software and the hardware are away from the prying eyes of the malicious software authors. This further reduces the opportunity for malicious authors to discover the tricks and techniques employed by the security vendors to protect you. About The Author Tim Klemmer Tim Klemmer has spent the better part of 12 years designing and perfecting the first true patented behavior-based solution to malicious software.
MORE RESOURCES: Officials detail increased D.C. security for certification, inauguration The Washington Post Homeland Security Department to Release New A.I. Guidance The New York Times Nuclear power for military bases will increase our national security Breaking Defense U.S. ambassador bashes Mexico’s security efforts. Mexico’s president pushes back - Los Angeles Times New 'spectral fingerprint' atlas of satellites aims to improve space security University of Arizona News Opinion | Trump’s national security wrecking crew The Washington Post ‘Never trust, always verify’: The zero trust approach to network security United States Army Brief altercation between fans mars France-Israel soccer match despite heavy security The Associated Press St. Francis Seraph hires security guards for Christmas, Nativity display visitors as crowds still plague area WCPO 9 Cincinnati Trump’s National Security Team Keeps Getting More Extreme The New Republic Video: How The Fortinet Security Fabric Is Combatting Cybersecurity Threats And Talent Shortage Channel Insider The Fastest Airport Security Line You Don’t Know About The Wall Street Journal The campus will be closed to anyone who is not a student, faculty or staff member. WVTM13 Birmingham Tuskegee president releases security updates following shooting WIAT - CBS42.com Do Titans QB, Coach Have Job Security? Sports Illustrated Inside The 2024 Security Benchmark Report Security Magazine Homeland Security Department releases framework for using AI in critical infrastructure The Associated Press The UN cybercrime convention threatens security research. The US should do something about it CyberScoop France draws with Israel in high-security operation to reach Nations League quarterfinals with Italy The Associated Press Endpoint Security from BlackBerry BlackBerry 3rd Annual U.S.-Mexico Defense and Security Roundtable smallwarsjournal Tuskegee University Shifts Security, Facilities Leadership Tuskegee University France-Israel Soccer Match is Overshadowed by Amsterdam Attack The New York Times Akamai: 84% of security professionals experienced an API security incident in the past year SecurityInfoWatch ‘We’re just a target’: Pickleball players call for more security Camas Washougal Post Record ESA opens registration for 2024 Town Hall Broadcast SecurityInfoWatch Trump names Florida’s Rep. Mike Waltz as national security adviser Nebraska Examiner New infosec products of the week: November 15, 2024 Help Net Security Mexican Officials Arrest Top Security Official in Mayor’s Beheading The New York Times Tom Homan, Trump’s ‘Border Czar,’ on Border Security The New York Times Linn County’s Food for Health pilot program aims to improve food security, support local economy KEZI TV South Florida campus security officer arrested after attempting to meet minor for sex WPBF West Palm Beach Silverfort Buys Rezonate to Fortify Identity Security Muscle BankInfoSecurity.com Trump Picks Kristi Noem for Homeland Security Secretary The New York Times Rand Paul Will Continue His COVID-19 Investigations From Atop the Senate Homeland Security Committee Reason NIST report on hardware security risks reveals 98 failure scenarios Help Net Security Microsoft Patch Tuesday, November 2024 Edition Krebs on Security Lamar CISD invests in safety, security amid rapid growth Community Impact Mexico’s ‘hugs, not bullets’ security strategy has failed, says US Ambassador Ken Salazar Mexico News Daily Who Is Michael Waltz, Trump’s Pick to Be National Security Adviser? The New York Times Security guard turned gunman: Christopher Farrell's fatal rampage in downtown San Diego - CBS News 8 |
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