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The Schellman Blog

Stay up to date with the latest compliance news from the Schellman blog.

Blog Feature

Cybersecurity Assessments | Penetration Testing

By: MATT WILGUS
June 16th, 2023

Some might say a good decision is based on knowledge and not on numbers.

Blog Feature

Penetration Testing

By: Cory Rey
March 2nd, 2023

The world of information security is ever-evolving as further innovation and development continue to drive the market forward. Web applications are no exception, but as they grow more complex with the addition of new features and supporting technology, so do their attack surfaces. Sometimes, it can feel like the latest risk to your web application is seemingly around the corner, and really, that might be true—it’s become more important than ever to maintain a good security posture.

Blog Feature

Penetration Testing | SchellmanLife

By: JOSH TOMKIEL
December 21st, 2022

There’s a Latin proverb that says, “if the wind will not serve, take to the oars.” If you’ve ever hunted for a (new) job, you likely can relate. Of course, every workplace has its idiosyncrasies, but you need to find the “wind” that serves you best.

Blog Feature

Cybersecurity Assessments | Penetration Testing

By: Loic Duros
December 14th, 2022

Once again, we need to talk about Burp. At Schellman, we’ve talked about this tool before—on our penetration testing team, we use it a lot and it serves us well, including in our work with mobile applications. But that doesn’t mean there still aren’t situations where extra effort is required in order to get the job done. Our fellow pen testers all know that things evolve so quickly in our field that sometimes we must improvise a new technique to properly solve to the problems we run into. Stop me if you’ve heard this one before, but one such issue that we are seeing crop up more and more during mobile penetration tests has to do with intercepting traffic from an application. Each time we watch some of that traffic escape our data flow, we’ve found each instance difficult and puzzling, because it’s not a static problem—when it comes to intercepting traffic from mobile applications, the issues can range from common to complex. One of those trickier ones to troubleshoot as a tester is when you can see most of the general web traffic from the mobile device being tested as it goes to Burp, but you also see that none, or very little, of the traffic from the actual mobile app under test follows. When that happens, you probably also note that there are no TLS errors for the domain in scope in the Event log from the Burp dashboard, and that, at the same time, the app seems to be working well, performing requests and receiving data as expected—there’s no other problem, it’s just that some of that traffic has decided to shoot off to the Great Unknown rather than where you know it should be. Does that sound familiar? If you’ve been frustrated by this same problem before, welcome to the club. This article will seek to understand why this even occurs in the first place before laying out a potential solution we worked up to curb any traffic trying to escape your proxy. Read on, and next time said traffic tries to get away from you, you’ll be ready.

Blog Feature

Penetration Testing | SchellmanLife

By: JOSH TOMKIEL
December 6th, 2022

When you’re applying for a new job, you have your reasons—whether it’s to find a new challenge or to escape a toxic workplace, you want to trust that somewhere else will be better for you and your career. But when you’re sending off applications, it’s hard to know what you might be getting yourself into—most times, you won’t know until you’ve signed your new employment contract and are in (a new set) of weeds.

Blog Feature

Penetration Testing

By: Cory Rey
November 16th, 2022

When conducting a web application penetration test, cross-site scripting (XSS) is one of the most common vulnerabilities identified by testers—it stems from an application’s lack of sanitization when certain characters are rendered from user-controlled input.

Blog Feature

Cybersecurity Assessments | Penetration Testing

By: Clint Mueller
October 27th, 2022

If you’ve ever created payloads for different pen testing or red team projects, you might have run into the problem that comes after bypassing antivirus/endpoint detection and response (AV/EDRs)—after successfully circumventing these, the code and techniques used only works for a few weeks or months before getting flagged as malicious.

Blog Feature

Cybersecurity Assessments | Penetration Testing

By: Rene Guerra
October 4th, 2022

If you’re running a business online, you’re likely providing an application program interface (API) on your website that allows your customers or business partners to enter and retrieve data. At Schellman, we primarily see REST-based APIs, but we’ve also tested GraphQL and occasionally SOAP.

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