Tom Hollingsworth

About the Author:

Tom Hollingsworth is a networking professional, blogger, and speaker on advanced technology topics. He is also an organizer for networking and wireless for Tech Field Day.  His blog can be found at https://networkingnerd.net/

Articles by Tom Hollingsworth

EVPN Doesn’t Need VXLAN

August 23, 2022

In this episode, Tom Hollingsworth and his panel discuss the pros and cons behind how EVPN Doesn’t Need VXLAN.

Tech Facing a Money Crunch? | Tomversations: Episode 31

August 18, 2022

In this episode we will discuss the state of funding in the IT space and how it might impact future career prospects. Wonder how startups get funded? Or why interest rates are linked to investments? Tune in to learn more!

Intel has an AEpic Security Problem | Gestalt IT Rundown: August 10, 2022

August 10, 2022

It’s Black Hat and DEFCON week and it wouldn’t be a show without the disclosure of a few big bugs. The winner so far seems to be a new exploit found in Intel’s SGX memory encryption technology. Per pre-briefing ahead of a talk happening today, security researchers found a flaw in the Advanced Programmable Interrupt Controller (APIC) that allows them to read uninitialized memory that could contain stale data before it’s cleared by the CPU. Unlike Spectre and Meltdown, this isn’t a side channel attack. It’s a flaw in the CPU architecture. This means that attackers can recover data very quickly. Tests showed a 128-bit AES encryption key could be recovered in less than 2 seconds with 94% accuracy and a 1024-bit RSA key could be nabbed in about a minute and a half with 74% accuracy. Intel is saying the exploit is on their 10th, 11th, and 12th gen processors which includes Ice Lake but no mention of Sapphire Rapids. This and more on this week’s episode of the Rundown. Head to GestaltIT.com for show notes.

Wireless is Not Mission Critical

July 26, 2022

On this episode, Tom Hollingsworth and the panel discuss how the world is more wireless that ever and if it’s reliable enough in critical situations.

Industrial Systems Coming Under Siege | Gestalt IT Rundown: July 20, 2022

July 20, 2022

Attackers are starting to target the critical infrastructure that runs industrial and manufacturing facilities. That may not sound like a new thing but the speed and sophistication with which they’re increasing their attacks is. Security firm Dragos hast noted in a recent post that there has been a significant increase in the number of people using password cracking tools on industrial equipment such as programmable logic controllers (PLCs). Where the real devilish genius comes into play is not tha these attackers are trying to corrupt them. Instead, they’re converting these machines into nodes in large botnets to amplify attacks. And if you think it’s hard to clean a malware infection from a PC try doing it on a PLC that can’t be shut down. Dragos noted that while they only tested one particular kind of PLC many other samples had traces of malware infections. Stephen, is this going to cause issues for our already strained supply chain?

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