Category: Embedded Diagnostics

Locks, Keys and Traps: Securing device JTAG interfaces

Alan Sguigna

July 10, 2017
5:57 pm

In two previous articles, I looked at the JTAG access port from a security perspective, and considered what exposure the choice of BMC operating system might have on a platform supporting At-Scale Debug. Now, let’s consider the root of all trust, the silicon itself, and see what options exist for locking it down.

Security of BMC Operating Systems

Alan Sguigna

July 2, 2017
1:58 pm

Given that they are network-accessible, BMCs present an attack surface. Which operating systems are hardened enough to be secure against malicious actors?

Embedded Boundary Scan for Defense Systems

Alan Sguigna

June 21, 2017
11:18 am

ASSET was recently awarded a multi-year contract for embedding boundary-scan test technology within a military system design. This meets a requirement of greater than 92% structural test diagnostic accuracy in-system, and will save millions of dollars over the lifespan of the system.

Securing JTAG-based At-Scale Debug

Alan Sguigna

June 18, 2017
4:14 pm

Security through obscurity is not a meaningful means to mitigate malevolent attacks. With the greater forensics capabilities offered by At-Scale Debug (ASD), how are platforms protected?

The MinnowBoard Chronicles Episode 18: Reverse-Engineering Code Execution

Alan Sguigna

June 11, 2017
1:55 pm

In my last article, I used Last Branch Record (LBR) Trace to manually capture UEFI program flow source and destination addresses. This week, I look at the associated instruction opcodes and mnemonics and try to figure out what is going on.

At-Scale Test

Alan Sguigna

April 30, 2017
1:32 pm

Now that At-Scale Debug (ASD) is becoming a de facto standard on Intel designs for the remote execution of CScripts, what other applications can take advantage of this technology?

At-Scale Debug Hardware Design Guidelines

Alan Sguigna

March 12, 2017
4:43 pm

Using an embedded debug agent, as opposed to an external JTAG debug probe, requires a connection between the service processor and the JTAG chain of the target CPU.

ASSET attends the Open Compute Summit

Alan Sguigna

March 9, 2017
8:57 pm

I spent the past two days at the Open Compute Project (OCP) U.S. Summit 2017, in Santa Clara, California. The HUGE news is that Microsoft has ported Windows Server to ARMv8 chips from Qualcomm and Cavium (but, for now, only for use within Azure).

At-Scale Debug

Alan Sguigna

February 12, 2017
3:40 pm

The use of embedded run-control is fast becoming a standard for remote debug on Intel server designs. It’s important to understand the key functionality and performance criteria in evaluating a solution for this application.

BMC-Assisted Debug

Alan Sguigna

January 2, 2017
5:20 pm

Run-control technology is rapidly becoming a de facto standard for forensics retrieval within high-availability, Intel Xeon-class servers. How did this standard come to be established?

Category: Embedded Diagnostics

Locks, Keys and Traps: Securing device JTAG interfaces

Security of BMC Operating Systems

Embedded Boundary Scan for Defense Systems

Securing JTAG-based At-Scale Debug

The MinnowBoard Chronicles Episode 18: Reverse-Engineering Code Execution

At-Scale Test

At-Scale Debug Hardware Design Guidelines

ASSET attends the Open Compute Summit

At-Scale Debug

BMC-Assisted Debug

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