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Secure ICS OT @secure-ics-ot.bsky.social · 3h

Feeling cute. Might swap a ICS/OT device today.

Secure ICS OT @secure-ics-ot.bsky.social · 07/10/2026

I might have done my job too well.... My aggressive equipment refresh has almost my whole fleet well below the manufacturer's generous warranty period. I might actually have time to focus more on security enhancements. 🤪

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Secure ICS OT @secure-ics-ot.bsky.social · 05/10/2026

It didn't take long for Dragos to share my contact information with Runzero.... No, I don't want a product that does active scanning of my fucking network.

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Secure ICS OT @secure-ics-ot.bsky.social · 30/09/2026

I see ICS/OT cybersecurity guru's posting on LinkedIn about protecting PLCs. My question is. What are they actually doing about it? I think it's a lot of "talk the talk" and not much of "walk the walk".

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Secure ICS OT @secure-ics-ot.bsky.social · 30/09/2026

Anybody out there using Authentik for remote access control?

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Secure ICS OT @secure-ics-ot.bsky.social · 29/09/2026

When the vendor supplies a FTP link to download firmware updates and it's not limited.

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Secure ICS OT @secure-ics-ot.bsky.social · 29/09/2026

Australia Health services should pursue legal or criminal action against Sam Altman and OpenAI.

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Secure ICS OT @secure-ics-ot.bsky.social · 28/09/2026

Vendors submitting reports, manuals, and so forth to you in Word format... Also a red flag

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Secure ICS OT @secure-ics-ot.bsky.social · 28/09/2026

Vendors submitting a quote to you in Excel format is a red flag.

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Secure ICS OT @secure-ics-ot.bsky.social · 28/09/2026

I'm not sure why anyone still uses Adobe Acrobat. Just saying.

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Secure ICS OT @secure-ics-ot.bsky.social · 28/09/2026

Have you remembered to thank AI today? You're not going to survive the AI apocalypse if you forget to thank the AI. /s

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Secure ICS OT @secure-ics-ot.bsky.social · 27/09/2026

Not all provlems need a digital technology solution.

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Secure ICS OT @secure-ics-ot.bsky.social · 27/09/2026

Present stakeholders with security solutions not problems.

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Secure ICS OT @secure-ics-ot.bsky.social · 25/09/2026

LOL That engineer is long since retired. I'm sure the approved procedures include testing and verification.

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Secure ICS OT @secure-ics-ot.bsky.social · 25/09/2026

The only time I have ever lost my luggage while flying for work. There was an oscilloscope in my checked luggage! I called the airport every day and fought with them over the phone to locate my luggage. Took a week!

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Secure ICS OT @secure-ics-ot.bsky.social · 25/09/2026

Restoring from backups isn't necessarily going to be a free pass in the ICS/OT. Even restoring from a golden backup in a critical environment, any engineer worth their mustard is going to insist on functional testing prior to putting their license on the line. Just saying.

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Secure ICS OT @secure-ics-ot.bsky.social · 25/09/2026

FYI if you purchase Seagate external drives you can use Seagates "Disk wizard" which is actually Acronis for free.

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Secure ICS OT @secure-ics-ot.bsky.social · 24/09/2026

I decided a long time ago that As a policy we are not resetting SCADA passwords or MFA without both the requester and administrator being in the SCADA office together.

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Secure ICS OT @secure-ics-ot.bsky.social · 24/09/2026

You are not deploying a ICS/OT specific firewall to the IT/OT boundary. There should be no ICS/OT protocols going across this boundary. If you have ICS/OT protocols going across this boundary you have bigger issues than the correct firewall.

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Secure ICS OT @secure-ics-ot.bsky.social · 24/09/2026

I like to start my ICS/OT network switch hardening process by... Not using a Cisco switch. After selecting a purpose made industrial switch it's a piece of cake to finish off the hardening process.

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Secure ICS OT @secure-ics-ot.bsky.social · 24/09/2026

Best compliment I have received in a while. I should be a ICS/OT cyber security instructor. 😅

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Secure ICS OT @secure-ics-ot.bsky.social · 24/09/2026

Once again.... I can explain it to you. I can't understand it for you.

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Secure ICS OT @secure-ics-ot.bsky.social · 20/09/2026

You don't make friends via email or Teams.

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Secure ICS OT @secure-ics-ot.bsky.social · 19/09/2026

You can't do effective ICS/OT security from behind a desk. You have to put on some steel toes and leave the office. Visit operations. Walk down the plant(s). Get to know managers, operators and the various trades. Put eyes on the situation.

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Secure ICS OT @secure-ics-ot.bsky.social · 19/09/2026

I have forgotten about Malcolm. Thanks!

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Secure ICS OT @secure-ics-ot.bsky.social · 19/09/2026

Why can I not setup a local AI to analyze ICS/OT syslog and network traffic using Snort IDS rules instead of using the various ICS/OT vendors?

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Secure ICS OT @secure-ics-ot.bsky.social · 19/09/2026

🚨 PSA for the younger folks 🚨 If you are not authorized to touch SCADA you're actually not authorized to touch it. We're not fucking around.

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Secure ICS OT @secure-ics-ot.bsky.social · 19/09/2026

Look at this shit people post on LinkedIn! This is f'n horrible!

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Secure ICS OT @secure-ics-ot.bsky.social · 18/09/2026

Just wiping old devices, tossing them and removing them from my asset inventory.

static.klipy.com

Trash

ALT: Trash

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Secure ICS OT @secure-ics-ot.bsky.social · 17/09/2026

Had a vendor add sim cards to devices even after we said not too. We removed the sims, disconnected the cell antennas and caped the SMA ends with terminator caps.

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Secure ICS OT @secure-ics-ot.bsky.social · 16/09/2026

I implemented sticky MACs at another of my sites today. Every day it gets a bit better.

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Secure ICS OT @secure-ics-ot.bsky.social · 16/09/2026

It took one week to let me know that it was indeed a phishing email. One week.

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Secure ICS OT @secure-ics-ot.bsky.social · 16/09/2026

I'm so glad the vendor implemented certificates for the HMI screens to work. /S Because someone might do a MITM on a HMI screen? The cert has expired and the screen is dead. The vendor got bought and the product is a paper weight. Take your crappy security ideas and shove them.

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Secure ICS OT @secure-ics-ot.bsky.social · 14/09/2026

ICS/OT nightmare: Bunch of new fancy network switches from preferred equipment vendor! Every configuration currently available is doesn't work for one reason or another. 😡

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