Tag Archives: trust

What, Me Worry?

According to Yahoo news Infrastructure Services Users Worry Less About Security. This article references a Yankee Group study that found although security remains a top barrier slowing the adoption of cloud services in the enterprise, most companies that have adopted Infrastructure-as-a-Service (IaaS) worry less about security once they begin using the technology.

Once they’ve made the leap into the cloud, the article suggests, users conclude that the security issues aren’t as significant as they had been led to believe. I find myself in partial agreement with this; the industry has created a level of hysteria around cloud security that isn’t necessarily productive. Taking pot shots at the security model in the cloud is pretty easy, and so many do—regardless of whether their aim is true (and for many, their aim is not).

Nevertheless, my interpretation of these results is that they are uncovering less a phenomenon of confidence genuinely earned and more a case of misplaced trust. The article makes an interesting observation about the source of this trust:

Twenty-nine percent of the companies in the survey viewed system integrators as their most trusted suppliers of cloud computing. But among early adopters of IaaS, 33 percent said they turn to telecom companies first.

Do you remember, back around the turn of the century, when large-scale PKI was first emerging? The prevailing wisdom was that state-sponsored PKI should be administered by the post offices because this organization above all was perceived as trustworthy (as well as being centralized and a national responsibility). Hong Kong, for instance, adopted this model. But in general, the postal-run PKI model didn’t take hold, and today few federal post services are in the business of administering national identity. Trust doesn’t transfer well, and trust with letters and packages doesn’t easily extend to trust with identity.

Investing generalized trust in the telcos reminds me of the early PKI experience. The market is immature, and because of this so too are our impressions. Truthfully, I think that the telcos will be good cloud providers—not because I have an inherent trust in them (I actively dislike my cell provider on most days), but because the telcos I’ve spoken to that have engaged in cloud initiatives are actually executing extremely well. Nevertheless, I don’t think I should trust them to secure my applications. This is ultimately my responsibility as a cloud customer, and because of I can’t reasonably trust any provider entirely, I must assume a highly defensive stance in how I secure my cloud-resident applications.

I hope my provider is good at security; but I need to assume he is not, and prepare myself accordingly.


Why Health Care Needs SOA

A recent article in DarkReading offers a powerful argument as to why the health care sector desperately needs to consider Service Oriented Architecture (SOA). In her piece Healthcare Suffers More Data Breaches Than Financial Services So Far This Year, Erika Chickowski cites a report indicating that security breeches in health care appear to be on the rise this year, with that sector reporting over three times more security incidents than the financial services industry.

I worked for many years in a busy research hospital, and frankly this statistic doesn’t surprise me; health care has all of the elements the lead to the perfect storm of IT risk. If there is one sector that could surely benefit from adopting SOA as a pretext to re-evaluate security as a whole, it is health care.

Hospitals and the health care eco-system that surround these are burdened with some of the most heavily siloed IT I have ever seen. There are a number of reasons why this is so, not the least of which is politics that often appear inspired by the House of Borgia. But the greatest contributing factor is the proliferation of single-purpose, closed and proprietary systems. Even the simplest portable x-ray machine has a tremendously sophisticated computer system inside of it. The Positron Emission Tomography (PET) systems that I worked on included racks of what at the time were state-of-the-art vector processors used to reconstruct massive raw data sets into understandable images. Most hospitals have been collecting systems like this for years, and are left with a curiosity cabinet of samples representing different brands and extant examples of nearly every technological fad since the 1970s.

I’m actually sympathetic to the vendors here because their products have to serve two competing interests. The vendors need to package the entire system into a cohesive whole with minimal ins and outs to ensure it can reasonably pass the rigorous compliance necessary for new equipment. The more open a system is, the harder it is to control the potential variables, which is a truism also in the security industry.  Even something as simple as OS patching needs to go through extensive validation because the stakes are so high. The best way to manage this is to close up the system as much as reasonably possible.

In the early days of medical electronics, the diagnostic systems were very much standalone and this strategy was perfectly sound. Today, however, there is a need to share and consolidate data to potentially improve diagnosis. This means opening systems up—at least to allow access to the data, which when approached from the perspective of traditional, standalone systems, usually means a pretty rudimentary export. While medical informatics has benefited some from standardization efforts, the medical systems still generally reduce to islands of data connected by awkward bridges—and it is out of this reality that security issues arise.

Chickowski’s article echos this, stating:

To prevent these kinds of glaring oversights, organizations need to find a better way to track data as it flows between the database and other systems.

SOA makes sense in health care because it allows for effective compartmentalizing of services—be these MRI scanners, lab results, or admission records—that are governed in a manner consistent with an overall security architecture. Good SOA puts security and governance upfront. It provides a consistent framework that avoids the patchwork solutions that too easily mask significant security holes.

A number of forward-looking health providers have adopted a SOA strategy with very positive results. Layer 7 Technologies partnered with the Universitry of Chicago Medical Center (UCMC) to build a SOA architecture for securely sharing clinical patient data with their research community. One of the great challenges in any medical research is to gather sample populations that are statistically significant. Hospitals collect enormous volumes of clinical data each day, but often these data cannot be shared with research groups because of issues in compliance, control of collection, patient consent, etc. UCMC uses Layer 7’s SecureSpan Gateways as part of its secure SOA fabric to isolate patient data into zones of trust. SecureSpan enforces a boundary between clinical and research zones. In situations where protocols allow clinical data to be shared with researchers, SecureSpan authorizes its use. SecureSpan even scrubs personally identifiable information from clinical data—effectively anonymizing the data set—so that it can be ethically incorporated into research protocols.

The UCMS use case is a great example of how SOA can be a protector of information, promoting the valuable use of data while ensuring that only the right people have access to the right views of that information.

To learn more about this use case, take a look at the detailed description available on the Layer 7 Technologies web site.

SQL Attack and the Largest Data Breach in US History

CNET’s Elinor Mills wrote an article today about the indictment of three men in the largest US data breach on record. Her article details how three system crackers, two Russians and a man from Florida,  allegedly stole data relating to 130m credit and debit cards and conspired to sell these to others. The story has also been picked up by BBC News.

The hack involved using SQL injection, a technique that was pioneered back in the PowerBuilder client/server days. Many people believe that the attack reached its zenith back then, and is of little real threat today. Clearly, this is not the case.

Indeed, in the services world, SQL injection remains a powerful and often used exploit. Here at Layer 7 we developed technology to defeat this many years ago. We use the acceleration technology in SecureSpan Gateways to scan for SQL attack signatures in messages, blocking transactions that test positive for SQL attacks.

Good security should be simple to apply. If it’s easy to implement, people will use it. Here’s what a policy with SQL injection protection looks like in the SecureSpan Gateway:


It doesn’t get much simpler than this–and that’s the point. Good security must be simple to comprehend, comprehensive, and broadly applicable.

Now, if you click on the SQL attack protection assertion, you can configure for particular attacks. This is important, because databases respond differently to certain signatures:


Can a single programmer write similar protections into his or her code? Absolutely. But do they? Well, Elinor has drawn our attention to the potential cost of not doing so. This kind of security is best applied consistently across all applications.  It’s just not realistic to assume developers will always do this correctly (or at all). Governance of services needs to be done by a dedicated security officer, one who understands the problems, and is disconnected enough from the application development process to be impartial. You separate development and QA for a good reason; sometimes you need to separate development and run time security enforcement for similar reasons.

If more organizations realized there were strong technical solutions like SecureSpan that augment their overall security and governance programs, then maybe we would hear less about massive breaches in privacy and trust like the one above.

The last word from the ever-brilliant xkcd:

On Twitter, Social Media, and Privacy

The greatest threat to our own privacy remains ourselves. CNET reports that a twitter user believes that his home was robbed because he tweeted about being on vacation. Couldn’t see that one coming…

This is a huge problem with social media. So much of it is a thinly veiled conceit, and few think about how this information could be used against them. Sometimes the exploits can be quite subtle. The article on CNET makes some really good points about determining someone’s location through geotagged flickr photos, including where they live and when/where they are out of town.

We spend a lot of time with legislation around privacy (e.g. HIPAA) and infrastrcture that enforces privacy policy, but in the end we are our own worst enemies.

Right now, I’m at home. Sharpening my knives.

eWeek: Managing Identity in the Cloud Podcast

I did a podcast recently with Mike Vizard of eWeek. Mike had some excellent questions around all the issues is managing identity and trust relationships in the cloud. This is one of those under-reported issues around cloud computing. Security always comes down to trust, and this is going to be the significant issue business faces as it moves applications out of it’s corporate network.

Listen to it here.