

Security Now (Video)
TWiT
Cybersecurity guru Steve Gibson joins Leo Laporte every Tuesday. Steve and Leo break down the latest cybercrime and hacking stories, offering a deep understanding of what's happening and how to protect yourself and your business. Security Now is a must listen for security professionals every week.
Records live every Tuesday at 4:30pm Eastern / 1:30pm Pacific / 20:30 UTC.
Records live every Tuesday at 4:30pm Eastern / 1:30pm Pacific / 20:30 UTC.
Episodes
Mentioned books

Aug 13, 2025 • 0sec
SN 1038: Perplexity's Duplicity - Malicious Repository Libraries
CISA's Emergency Directive to ALL Federal agencies re: SharePoint.
NVIDIA firmly says "no" to any embedded chip gimmicks.
Dashlane is terminating its (totally unusable) free tier.
Malicious repository libraries are becoming even more hostile.
The best web filter (uBlock Origin) comes to Safari.
The very popular SonicWall firewall is being compromised.
>100 models of Dell Latitude and Precision laptops are in danger.
The significant challenge of patching SharePoint (for example).
A quick look at my DNS Benchmark progress.
Does InControl prevent an important update.
An venerable Sci-Fi franchise may be getting a great new series.
What to do about the problem of AI "website sucking"
Show Notes - https://www.grc.com/sn/SN-1038-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
Join Club TWiT for Ad-Free Podcasts!
Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit
Sponsors:
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Aug 6, 2025 • 2h 47min
SN 1037: Chinese Participation in MAPP - Why Signal is Leaving Australia
A follow-up to the SharePoint server patch mess.
How Russia arranges to spy on other country's local embassies.
"Dropbox Passwords" manager app is ending in October.
Signal will leave Australia rather than help spy.
YouTube deploys viewing history age-estimation heuristics.
Chrome adds clever lightweight extension signing to prevent abuse.
A domain registrar is coming close to losing its rights.
A TP-Link router that doesn't encrypt its configuration.
What is "TruAge" and might it be useful for age verification.
An update on "Artemis".
With U.S.-China tensions on the rise, should Chinese security companies receive weeks of advance notice of forthcoming Microsoft flaw patches?
Show Notes - https://www.grc.com/sn/SN-1037-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
Join Club TWiT for Ad-Free Podcasts!
Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit
Sponsors:
bitwarden.com/twit
bigid.com/securitynow
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Melissa.com/twit
threatlocker.com for Security Now

Jul 30, 2025 • 2h 58min
SN 1036: Inside the SharePoint 0-day - Is Our Data Safe Anywhere?
Brave randomizes its fingerprints.
The next Brave will block Microsoft Recall by default.
Clorox sues its IT provider for $380 million in damages.
6-month Win10 ESU offers are beginning to appear.
Warfare has significantly become cyber.
Allianz Life loses control of 125 million customers' data.
The CIA's Acquisition Research Center website was hacked.
The Pentagon says the SharePoint RCE didn't get them.
A look at a DPRK "laptop farm" to impersonate Americans.
FIDO's passkey was NOT bypassed by a MITM after all.
Is our data safe anywhere?
The UK is trying to back-pedal out of the Apple ADP mess.
Meanwhile, the EU resumes its push for "Chat Control".
Microsoft fumbled the patch of a powerful Pwn2Own exploit
Show Notes - https://www.grc.com/sn/SN-1036-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
Join Club TWiT for Ad-Free Podcasts!
Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit
Sponsors:
canary.tools/twit - use code: TWIT
threatlocker.com for Security Now
bitwarden.com/twit
uscloud.com

Jul 23, 2025 • 2h 48min
SN 1035: Cloudflare's 1.1.1.1 Outage - Bypassing Passkey Protections
Bypassing all passkey protections.
The ransomware attacks just keep on coming.
Cloudflare capitulates to the MPA and starts blocking.
The need for online age verification is exploding.
Microsoft really wants Exchange Servers to subscribe.
Russia (further) clamps down on Internet usage.
The global trend toward more Internet restrictions.
China can inspect locked Android phones. Use a burner.
Web shells are the new buffer overflow.
An age verification protocol sketch.
What Cloudflare did to create an outage of 1.1.1.1
Show Notes - https://www.grc.com/sn/SN-1035-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
Join Club TWiT for Ad-Free Podcasts!
Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit
Sponsors:
zscaler.com/security
1password.com/securitynow
go.acronis.com/twit

Jul 16, 2025 • 2h 56min
SN 1034: Introduction to Zero-Knowledge Proofs - Taking Down Quantum Factorization
A glorious takedown of quantum factorization.
Notepad++ signs its own code signing certificate.
Dennis Taylor has Bobiverse Book 6 on his lap.
Crypto/ATM machines flat out outlawed.
Signal vs WhatsApp: Encryption in flight and at rest.
A close look at browser fingerprinting metrics.
Rewriting interpreters in memory-safe languages.
An introduction to zero-knowledge proofs
Show Notes - https://www.grc.com/sn/SN-1034-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
Join Club TWiT for Ad-Free Podcasts!
Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit
Sponsors:
bitwarden.com/twit
joindeleteme.com/twit promo code TWIT
bigid.com/securitynow
threatlocker.com for Security Now
uscloud.com

Jul 9, 2025 • 3h 5min
SN 1033: Going on the Offensive - The Digital Arms Race
Explore the rise of new spyware vendors targeting journalists and how geopolitical tensions are prompting the EU to move away from reliance on major tech firms. A spotlight shines on cybersecurity legislation, including congressional bans on WhatsApp and rising risks from Bitcoin ATMs. Discover the implications of Microsoft's security innovations and the looming digital arms race against China. Additionally, the pod delves into struggles within open-source maintenance and the evolving landscape of cyber threats and hacker skills.

13 snips
Jul 2, 2025 • 2h 58min
SN 1032: Pervasive Web Fingerprinting - How Websites Tracks You Despite Cookie Blocks
Discover the latest shifts in cybersecurity, including Microsoft's unexpected system restarts and updates on SSL certificates. Dive into the complexities of web fingerprinting and how it tracks users without cookies. Learn about Russia's mandate for pre-installed apps on iPhones and the growing preference for Linux over Windows in Lyon. Explore groundbreaking innovations in memory-safe programming languages and the rise of AI-driven malware, all while navigating the delicate balance of privacy and targeted advertising in the digital landscape.

Jun 25, 2025 • 3h 1min
SN 1031: How Salt Typhoon Gets In - What "AI" Really Means
Discover the chilling effects of China's Salt Typhoon as it infiltrates major organizations, including a Canadian telecom. Learn about state healthcare portals leaking sensitive data and Apple's new Passkey integration. Unpack the ongoing threats in telecommunications and the implications of banning encryption. Explore the evolving role of AI in cybersecurity, balancing its potential as a tool against the risks it poses, and delve into critical vulnerabilities within Cisco devices that highlight the urgent need for enhanced network security.

Jun 18, 2025 • 2h 48min
SN 1030: Internet Foreground Radiation - The NPM Repository is Under Siege
Exploring a troubling iOS iMessage vulnerability that Apple disputes raises eyebrows about user safety. The NPM repository faces relentless attacks, leaving developers on edge. Insights reveal the risks of unsecured internet cameras and how user privacy is endangered by data brokers. Microsoft takes action by blocking risky file types in Outlook. Meanwhile, sophisticated bot scans threaten online security. The need for robust cybersecurity measures and vigilance has never been more pressing as foreign hacking groups target major companies.

8 snips
Jun 11, 2025 • 2h 46min
SN 1029: The Illusion of Thinking - Meta Apps and JavaScript Collusion
Reflecting on the legacy of Bill Atkinson, the discussion unveils Meta's concerning collaboration with JavaScript. A new filtered DNS service from the EU and OpenAI’s legal obligation to preserve user chats raise alarms. The risks of using Telegram under Russian surveillance and the implications of tracking by Meta on user privacy are explored. Adding humor, the absurdity of tech products like a captcha-requiring oven is highlighted, alongside the challenges of large reasoning models in AI. The episode underscores the urgent need for enhanced cybersecurity measures.