Discover how Anthropic's secretive red team and the MITRE ATT&CK framework are mapping the chilling rise of malicious AI use, revealing cyber threats that now move faster than defenders can respond.

• Was a U.S. law firm right to pay a $20 million ransom.
• Could Cisco have yet another SD-WAN 0-day in the wild.
• Why is it so difficult to author secure PHP code.
• Teens use "WeedHack" to spy and attack each other.
• Researchers create the first AI-enabled Internet worm.
• Google Chrome pops-up "Shop with confidence." What...
• The discovered and irresponsibly disclosed HTTP/2 Bomb.
• What Anthropic learns from their past year of Claude abuse: It's bad

Show Notes - https://www.grc.com/sn/SN-1082-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.

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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!
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• XBOW.com

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

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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

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

Sponsors:

• cyberhoot.com/securitynow
• guardsquare.com
• doppel.com
• outsystems.com/twit
• threatlocker.com/twit

Google is sneaking a massive 4.7GB AI model into Chrome, and Mozilla is fighting back as the future of browsers threatens to turn into an AI arms race. Find out what's really happening behind this push and why it's setting off alarm bells across the web.

• Hackers AI-code a portal, forget to add authentication.
• The UK's NCSC issues a Mythos warning. Where's CISA?
• Another (of many) Linux local privilege escalations.
• AI may be spelling the end of bug bounties.
• Anthropic releases "Claude Security" mini-Mythos.
• ChatGPT gets very serious about login security.
• Syncthing's SyncTrayzor v1 abandoned; v2 created.
• Google drops an AI API into Chrome; Mozilla objects

Show Notes - https://www.grc.com/sn/SN-1077-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
• zscaler.com/security
• meter.com/securitynow
• bitwarden.com/twit
• hoxhunt.com/securitynow
• trustedtech.team/securitynow365

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

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