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by 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.
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- 2 days ago3h 19m
SN 1081: AI Captured the Flag - Personal AI: Productivity Superpower or Privacy Threat?
AI vulnerability discovery just upended the legendary Capture the Flag competitions, leaving top hackers sidelined while algorithms dominate the scoreboard. Hear why one seasoned researcher says the entire game is over for humans. As expected, UnFiOS devices are under attack. CISA commands federal agencies to update Drupal. Can the largest botnet ever, be killed. Defender endpoint can cutoff a PC from the network. Charter Communications big account leak. Chrome moves device-bound session cookies from beta. Anthropic to release Mythos shortly. cURL and Daniel Stenberg. IBM & RedHat commit to fixing open source with AI. LOTS of terrific listener feedback this week. AI spells the end of a terrific source of training Show Notes - https://www.grc.com/sn/SN-1081-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: bitwarden.com/twit hoxhunt.com/securitynow zscaler.com/security material.security meter.com/securitynow
- 1 weeks ago2h 44m
SN 1080: Vulnerability Debt Repayment - Will Mythos Change Cybersecurity Forever?
Mozilla found 271 unknown Firefox vulnerabilities in days using AI—bugs that millions of automated test runs had missed for years. Steve Gibson argues this isn't a crisis. It's the industry finally paying down decades of security debt, and for the first time, defenders may have the advantage. Cisco meets Mythos Can the aging CVE system survive AI Patch deployment latency in the AI age MSFT's official YellowKey BitLocker bypass mitigation Ubiquiti patches 5 serious vulnerabilities Drupal attacked by a PostgreSQL injection Microsoft terminates SMS as a second factor GitHub hacked - all of its source code exfiltrated Russia is using very old Western software Why to get a no-charge AI chatbot account New Sci-Fi on Netflix What we learn from Mozilla's use of Mythos Show Notes - https://www.grc.com/sn/SN-1080-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: guardsquare.com doppel.com cyberhoot.com/securitynow trustedtech.team/securitynow365 XBOW.com
- 2 weeks ago2h 51m
SN 1079: Daybreak and Codename MDASH - Microsoft's Edge Password Blunder
OpenAI, Microsoft, and Google are racing to unleash next-gen AI that hunts for software vulnerabilities and hacks at scale. This episode explores how these advancements could shake up everything we thought we knew about cybersecurity. Microsoft rethinks Edge's "intended behavior" after it gets press. Chaotic Eclipse hacker strikes again with a Bitlocker bypass. Google's threat analysis group documents malicious AI use. Canada hasn't learned the lessons of the EU and the UK. AI chatbots may be far more addictive than social media. Project: Hail Mary now available to stream. An apparently-serious zero-point quantum vacuum energy source. A bit of listener feedback. OpenAI's & Microsoft's vulnerability discovery systems Show Notes - https://www.grc.com/sn/SN-1079-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: outsystems.com/twit hoxhunt.com/securitynow zscaler.com/security meter.com/securitynow canary.tools/twit - use code: TWIT joindeleteme.com/twit promo code TWIT
- 3 weeks ago2h 40m
SN 1078: DigiCert does it right - Hugging Face Under Fire
DigiCert's latest security mishap triggered not just a scramble behind the scenes, but a cascading crisis that briefly wiped trust from millions of Windows systems. Find out how a single support slip, followed by Microsoft's heavy-handed response, left critical infrastructures exposed. The FCC decides router firmware updates are useful. Netgear applies for and gets a full FCC pass. AI uncovers a 21-year old critical FreeBSD RCE. What was behind that Let's Encrypt outage. AI model repositories are overflowing with malware. The CISA 2015 info-sharing act is being renewed. Edge leaves ALL usernames and passwords in the clear. An examination of DigiCert's breach and their response Show Notes - https://www.grc.com/sn/SN-1078-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit
- May 6, 2026solo04-min read
SN 1077: A Browser AI API? - End of Bug Bounties?
Google's integration of a 4.7GB local AI model into Chrome via a new JavaScript API has sparked controversy over privacy, control, and web standards, while Mozilla and others warn of interoperability risks and corporate overreach. Concurrently, AI is transforming vulnerability research, potentially ending traditional bug bounties as automated systems flood maintainers with high-signal findings. The episode also covers a major breach at DigiCert, a hacker-operated credit card verification service built with AI, and the UK’s NCSC warning about an impending patch wave due to AI-exposed technical debt.
- Apr 29, 20262h 35m
SN 1076: FAST16.SYS - Unmasking the NSA's Most Diabolical Digital Sabotage
What if your engineering calculations secretly sabotaged your nation's best efforts? This week, we reveal how a newly uncovered 21-year-old NSA rootkit quietly corrupted scientific research in hostile states and why it changes everything you think you know about cyberwarfare. Bitwarden's CLI hit with a supply-chain attack. Commercial routers in Iran fail shortly before the war. Meta logging all employee activity to train replacement AI. GRC's DNS Benchmark Release 5. Two miscellaneous AI thoughts. A bunch of terrific listener feedback. Unraveling the diabolical history of "fast16.sys" Show Notes - https://www.grc.com/sn/SN-1076-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: doppel.com threatlocker.com/twit material.security cyberhoot.com/securitynow guardsquare.com
- Apr 22, 20262h 40m
SN 1075: Yes. Exactly. - The Zero-Day Ticking Clock
Security leaders warn the era of AI-driven bug hunting has arrived, with Mythos uncovering hundreds of overlooked vulnerabilities in code bases as trusted as Firefox. Are defenders ready for the avalanche of exploits and the frantic race to patch? A disgruntled developer discloses multiple Windows 0-days. Microsoft purchases its own bugs in massive campaign. VeraCrypt & Wireshark suddenly lost their dev accounts. A serious problem with re-captured domain names. How might AI help to secure open source repositories. A listener wonders what we thought of Project Hail Mary. Cyber security professionals tell us What Mythos Means Show Notes - https://www.grc.com/sn/SN-1075-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: canary.tools/twit - use code: TWIT joindeleteme.com/twit promo code TWIT hoxhunt.com/securitynow meter.com/securitynow zscaler.com/security
- Apr 15, 20260
SN 1074: What Mythos Means - Marketing or Mayhem
We may already be living through the most consequential hundred days in cyber history, and the arrival of AI that can autonomously chain zero-day vulnerabilities into working exploits means the software industry's long-standing "ship it and patch it later" era is officially over. Show Notes - https://www.grc.com/sn/SN-1074-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 audio and video feeds, a members-only Discord, and exclusive content. Join today: https://twit.tv/clubtwit Sponsors: guardsquare.com hoxhunt.com/securitynow zscaler.com/security
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About Security Now (Audio)
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.
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