Month: April 2019

Software Integrity Tools

There are a number of tools used to detect security issues in a software application codebase. A simple and free one is flawfinder. A sophisticated commercial one is Veracode.  There’s also lint, pylint, findbugs for java, and xcode clang static analyzer.

Synopsis has bought a few tools like Coverity and Blackduck for various static checks on code and binary. Blackduck can do binary analysis and scores issues with the CVSS. A common use of Blackduck is for license checking to check for conformance to open source licenses.

A more comprehensive list of static code analysis tools is here.

Dynamic analysis tools inspect the running process and find memory and execution errors. Well known examples are valgrind and Purify. More dynamic tools are listed here.

For web application security there are protocol testing and fuzzing tools like Burp suite and Tenable Nessus.

A common issue with the tools is the issue of false positives. It helps to limit the testing to certain defect types or attack scenarios and identify the most critical issues, then expand the scope of types of defects.

Code obfuscation and anti-tamper are another line of tools, for example by Arxan, Klocwork, Irdeto and Proguard .

A great talk on Adventures in fuzzing. My takeaway has been that better ways of developing secure software are really important.



Open Compute Project 2019

OCP has the mission to “design and enable the delivery of the most efficient server, storage and data center hardware designs for scalable computing”.

OCP had its global 2019 summit recently. Some interesting trends on hyperscale networks are discussed here and here with the use of F16 fabric network with its a focus on higher bandwidth but also performance at the right cost instead of at any cost. The heart of this new F16 fabric is the Minipack switch, with contribution from Arista which Facebook says will consume 50 percent less power and space than the Backpack switch it replaces in the network.  It is a 128x100Gb switch and uses a Broadcom Tomahawk-3 Asic. Quote: “a path from a rack in one building to a rack in another building over Fabric Aggregator was as many as 24 hops long before. With F16, same-fabric network paths are always the best case of six hops, and building-to-building flows always take eight hops. This results in half the number of intrafabric network hops and one-third the number of interfabric network hops between servers.”

Intel announced an industry collaboration around Platform Root of Trust at the Open Compute Project 2019 summit.

There’s a talk on Stratum and the use of P4 and Switch Abstraction Interface (SAI) for SDN, by Open Networking Foundation (ONF) and Google. Tencent has a use case for disaggregating their monolithic network into a modular switch with a network of controllers instead of a single controller.

Smaller data centers at the edge is another trend.