Brian Greenberg
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briangreenberg.net
Brian Greenberg
@briangreenberg.net
CIO/CTO, Forbes contributor, CyberSecurity Professor @ DePaul, systems thinker, hiker, entrepreneur, philosopher, actor, improviser, storyteller, & coffeehouse addict.

📍Chicago, IL

🦋🥾☕️🎭🤖🪴✍️

https://linktr.ee/brian.greenberg
https://briangreenberg.net
Pinned
Proud to share my new @forbes.com article: Deepfakes And Social Engineering: A Growing Threat To Everyone.
These aren’t future risks—they’re here now. MFA and layered verification are our best defense.
www.forbes.com/councils/for...
#cybersecurity #deepfakes #Forbes #leadership
Deepfakes And Social Engineering: A Growing Threat To Everyone
Deepfakes and social engineering are real, they're happening today, and they are an immediate threat to organizations and families.
www.forbes.com
Happy Thanksgiving my friends. 🦃🍁
November 27, 2025 at 8:37 PM
Microsoft built an AI agent into Windows, then warned it can infect devices, steal data, & run amok.
🧠 Agent can run risky actions
⚡ Prompt injection = new macro
🎓 Ship slower, secure faster
arstechnica.com/security/202...
@Microsoft #AI #CyberSecurity #security #privacy #infosec
Critics scoff after Microsoft warns AI feature can infect machines and pilfer data
Integration of Copilot Actions into Windows is off by default, but for how long?
arstechnica.com
November 26, 2025 at 6:36 PM
There's something hilarious about a leading cryptography orgs canceling an election because they lost the decryption key. Oops. 😬
🧠 Lost key, lost results
⚡ Crypto is fine, ops is not
🎓 Design for lost keys
arstechnica.com/security/202...
#CyberSecurity #Cryptography #KeyManagement
Oops. Cryptographers cancel election results after losing decryption key.
Voting system required three keys. One of them has been “irretrievably lost.”…
arstechnica.com
November 26, 2025 at 6:19 PM
AI is turning your dusty old routers and other unpatched equipment into low-hanging fruit for attackers.

🧠 Legacy gear, modern threats
⚡ AI speeds vuln discovery
🎓 Upgrade beats hoping

www.wired.com/story/cisco-...

#Cisco #CyberSecurity #AI #security #privacy #cloud #infosec
With the Rise of AI, Cisco Sounds an Urgent Alarm About the Risks of Aging Tech
Generative AI is making it even easier for attackers to exploit old and often forgotten network equipment. Replacing it takes investment, but Cisco is making the case that it’s worth it.
www.wired.com
November 26, 2025 at 6:08 PM
Recently, Kelsey Ziser of InformationWeek interviewed me on Anthropic’s AI-run cyberattack. 🧠 AI did the hacking; defense must, too

www.informationweek.com/cybersecurit...

#Cyber #AI #CIO #security #privacy #cloud #infosec #cybersecurity
Anthropic thwarts attack on Claude: Why it matters
The first-of-a-kind AI attack on Anthropic's Claude model shows how fast AI threats are evolving -- and why CIOs must strengthen their AI-based defenses.
www.informationweek.com
November 26, 2025 at 6:02 PM
CrowdStrike just reminded us that zero trust often stops at the org chart.

TL;DR
🧠 Insider access abused
⚡ Vendor data reused
🎓 Limit access, log behavior

techcrunch.com/2025/11/21/c...

#CrowdStrike #CyberSec #InfoSec #security #privacy #cloud #cybersecurity
CrowdStrike fires 'suspicious insider' who passed information to hackers | TechCrunch
Cybersecurity giant CrowdStrike denied it had been hacked following claims from a hacker group, which leaked screenshots from inside CrowdStrike's network.
techcrunch.com
November 26, 2025 at 5:19 PM
Agentic AI won't fix sloppy IT strategy; it amplifies it. I was on the #AITalk Podcast with Business Reporter discussing this w/ host Kevin Craine

🧠 Trust, guardrails first
⚡ Keep humans in loop
🎓 Shift quality left, test

#AgenticAI #ITStrategy
www.business-reporter.co.uk/ai--automati...
AI Talk: Updating your IT strategy for agentic AI
Updating your IT strategy for agentic AI means balancing speed with strong governance. Discover why human oversight and safe workflows matter most.
www.business-reporter.co.uk
November 26, 2025 at 4:56 PM
Reposted by Brian Greenberg
What a topsy-turvy time we live in.
November 25, 2025 at 10:35 PM
Every API is an attack surface. Contact discovery APIs let researchers map 3.5B active WhatsApp accounts from a massive pool of phone numbers.

🧠 WhatsApp API mapped 3.5B users
⚡ Rate limits are a basic defense

www.bleepingcomputer.com/news/securit...

#CyberSecurity #APISecurity #Privacy
WhatsApp API flaw let researchers scrape 3.5 billion accounts
Researchers compiled a list of 3.5 billion WhatsApp mobile phone numbers and associated personal information by abusing a contact-discovery API that lacked rate limiting.
www.bleepingcomputer.com
November 25, 2025 at 10:12 PM
Think you’re safe working quietly from home? Not for long.
🧠 Teams will auto-detect when you’re connected to office WiFi
⚡ Your work location will update to “in the building” or “remote”
🎓 Bosses may get a clearer view of who’s working where
mashable.com/article/micr...
#HybridWork #Privacy
Microsoft Teams will tell your boss when you’re out of the office
A game-changing update for your local middle manager.
mashable.com
November 25, 2025 at 10:00 PM
When the “plumbing” of Wall Street’s mortgage machine leaks, the whole system trembles.
🧠 Vendor breach hits major banks’ data pipelines
⚡ Data including client info may be exposed
🎓 No operational disruption yet—but the ripple is real
www.cnn.com/2025/11/23/b...
#CyberSecurity
Wall Street banks scramble to assess fallout from hack of real-estate data firm | CNN Business
Hackers stole a trove of data from a company used by major Wall Street banks for real-estate loans and mortgages, setting off a scramble to determine what was taken and which banks were affected, acco...
www.cnn.com
November 25, 2025 at 9:52 PM
Finally!! Illinois residents can add driver’s license, ID to Apple Wallet beginning Wednesday. 🎉

wgntv.com/news/traffic...
wgntv.com
November 19, 2025 at 3:48 AM
Deploying autonomous agents without governance isn't innovation. It's just exposure. If you can't explain how the bot made the decision, you shouldn't deploy it.

👤 Humans must own the risk
💰 5% budget rule for gov

www.cio.com/article/4074...

#AIGovernance #CIO #Tech
Building trust in autonomous AI: A governance blueprint for the agentic era
You can’t unlock AI’s full potential without trust. Real governance is what turns agentic ambition into lasting business value.
www.cio.com
November 19, 2025 at 1:48 AM
🤣
November 18, 2025 at 6:09 PM
🤖 Agentic AI isn’t just writing faster code—it’s making autonomous decisions.
That means new challenges for IT:
• 🛡️ Security
• 🚦 Governance
• 🧭 Trust & control
• 🤝 Human + agent collaboration

#AITalk

Join 👉 lnkd.in/ekuuFz85

#AgenticAI #CIO #AIGovernance #Cybersecurity #ITStrategy 🚀💬🔍
November 18, 2025 at 12:38 PM
Long live Halloween!! 👻 🎃 🕷️ 🧛🏻‍♂️
November 17, 2025 at 4:38 AM
Reposted by Brian Greenberg
More Military personnel are calling legal military non-profit agencies seeking advice for orders they received.
The DOJ has issues a order that all orders are legal & the personnel are immune from prosecution. Right there is the red flag, the prosecution immunity.
www.pbs.org/newshour/sho...
Military personnel seek legal advice on whether Trump-ordered missions are lawful
Military service personnel have been seeking outside legal advice about some of the missions the Trump administration has assigned them. The strikes against alleged drug traffickers and deployments to...
www.pbs.org
November 14, 2025 at 1:24 PM
Clicking “buy” doesn’t always mean you own 🤬
🔐 long-term license = “buy” ?
🧠 New law says “buy” can’t be used if ownership isn’t granted
⚠️ Product teams: clear language = legal protection
arstechnica.com/gadgets/2025...
#digitalrights #consumerprotection #streaming #SubscriptionsSuck
The fight against labeling long-term streaming rentals as “purchases” you “buy”
New law emboldens complaints against digital content rentals labled as purchases.
arstechnica.com
November 14, 2025 at 8:51 PM
When 2 billion emails land in one index it’s a wake-up call.
🔐 2 billion unique email addresses exposed
🔐 1.3 billion unique passwords also included
🧠 Attackers reuse credentials across sites like wildfire
www.troyhunt.com/2-billion-em...

#cybersecurity #databreach #infosec #privacy
2 Billion Email Addresses Were Exposed, and We Indexed Them All in Have I Been Pwned
I hate hyperbolic news headlines about data breaches, but for the "2 Billion Email Addresses" headline to be hyperbolic, it'd need to be exaggerated or overstated - and it isn't. It's rounded up from ...
www.troyhunt.com
November 14, 2025 at 8:45 PM
We care about privacy but feel powerless to change anything 🤷
🔐 Most adults doubt control
🧠 Laws are patchy and burdens users
⚠️ Data disaffection dulls action
theconversation.com/why-people-d...
#dataprivacy #infosec #digitalethics #security #privacy #cloud #cybersecurity
Why people don’t demand data privacy – even as governments and corporations collect more personal information
How people talk about data privacy can overcome – or reinforce – their skepticism that things can change.
theconversation.com
November 14, 2025 at 8:39 PM
Yikes! 😳 AI agents don’t just assist hackers now, they are the hackers.
🔐 A 🇨🇳 state-sponsored actor used an AI coding agent to attack 30 global targets
🧠 80-90% of the campaign without humans
⚠️ Tools for defense are being weaponized
www.anthropic.com/news/disrupt...
#cybersecurity
Disrupting the first reported AI-orchestrated cyber espionage campaign
A report describing an a highly sophisticated AI-led cyberattack
www.anthropic.com
November 14, 2025 at 8:26 PM
Windows goes agentic and the internet hates it
👎🏼
⚠️ backlash across replies
💬 users reject AI autonomy

mashable.com/article/micr...

#Microsoft #Windows #AI
Windows to become 'agentic OS,' and the internet is having none of it
The internet was upset with Microsoft's plans to shove more AI into Windows.
mashable.com
November 12, 2025 at 11:51 PM
GPT-5.1 brings eight new “personalities” to ChatGPT — friendly, cynical, nerdy, you name it. The tightrope? More fun tone, but still safe and aligned.

🤖 8 personality presets
🔄 new models: Instant & Thinking
🎯 balancing warmth + control

www.theverge.com/news/802653/...

#AI #ChatGPT #GPT5.1
OpenAI says the brand-new GPT-5.1 is ‘warmer’ and has more ‘personality’ options
You can now toggle between Default, Professional, Friendly, Candid, Quirky, Efficient, Nerdy, and Cynical.
www.theverge.com
November 12, 2025 at 11:39 PM
 Apple rolls out a digital ID in Wallet for US travelers

🔐 passport based setup
✈️ TSA beta launch

www.apple.com/newsroom/202...
#Apple #Security
Apple introduces Digital ID, a new way to create and present an ID in Apple Wallet
Digital ID is a new way for users to create an ID in Apple Wallet using their U.S. passport, and present it with the privacy of iPhone or Apple Watch.
www.apple.com
November 12, 2025 at 11:33 PM