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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. You can join Club TWiT for $10 per month and get ad-free audio and video feeds for all our shows plus everything else the club offers...or get just this podcast ad-free for $5 per month. New episodes every Tuesday.
Updated: 2 hours 33 min ago

SN 1084: The Residential Proxy Threat - Malicious Proxies in Your Living Room

Tue, 06/23/2026 - 10:33pm

A flood of everyday gadgets, from cheap streaming boxes to digital photo frames, are being secretly conscripted into global proxy networks and used to mask major cyberattacks—possibly even targeting your own home network.

  • Worries of AI-power cyberattacks are spreading.
  • Mythos "missed some" important vulnerabilities in Firefox.
  • Every recent patch Tuesday Nightmare Eclipse has struck. What now?
  • Massive store of valid FortiGate VPN credentials found.
  • F5 issues emergency updates to their NGINX-based server offerings.
  • Introducing "AI Potpourri" -- deeply altering an AI's personality.
  • A close look at the explosion in malicious proxy networks.
  • A Canadian judge okayed the illegal removal of such infections

Show Notes - https://www.grc.com/sn/SN-1084-Notes.pdf

Hosts: Steve Gibson and Leo Laporte

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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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SN 1083: Patch Tuesday à la AI - Arch Linux Repo Under Siege

Tue, 06/16/2026 - 10:14pm

This episode unpacks the jaw-dropping surge in vulnerabilities unearthed by AI, revealing how Microsoft shattered its own patch records while adversaries and defenders race to outpace each other. The conversation gets real about whether AI is fixing our broken software or just making attacks easier for everyone.

  • Rootkits found in more than 400 ArchLinux User Repository packages.
  • The US government requests Anthropic to remove Mythos and Fable.
  • CISA responds to AI-driven attacks with new patching requirements.
  • NPM to switch to more secure install defaults. Will it help.
  • Our listeners react to last week's PHP commentary.
  • June shows that AI has arrived for vulnerability discover

Show Notes - https://www.grc.com/sn/SN-1083-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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SN 1082: The Malicious Use of AI - Anthropic's Red Team Report

Tue, 06/09/2026 - 9:17pm

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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SN 1081: AI Captured the Flag - Personal AI: Productivity Superpower or Privacy Threat?

Tue, 06/02/2026 - 11:08pm

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.

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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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Categories: Security Now