In this special holiday episode, Steve Gibson and Leo Laporte revisit their classic conversation about vitamin D—diving into the science, surprising updates, and practical tips for your health. Whether you've heard it before or are tuning in for the first time, this "blast from the past" is the perfect way to kick off 2026 with wisdom, laughs, and a little bit of eggnog recovery.

Read more at https://www.grc.com/health

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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What if your smart TV and Firefox extensions were secretly hijacking your security and privacy? This episode reveals the jaw-dropping discovery of a massive TV botnet and the surprisingly clever malware lurking behind innocent browser icons.

• North Korea's profitable fixation on cryptocurrency.
• Amazon uncovers a cryptomining sneaking into customer clouds.
• Insecure Docker API servers are also hosting cryptominers.
• A new and truly massive SmartTV-based botnet discovery.
• DNS Benchmark's 4th release.
• Who, besides Let's Encrypt, offers free automated certs.
• Some interesting listener feedback.
• And how a PNG Icon was used to infect 50,000 Firefox users

Show Notes - https://www.grc.com/sn/SN-1057-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

Sponsor:

• zscaler.com/security

Australia's nationwide social media ban has put tech's age verification tools under the spotlight, exposing the flaws and privacy risks in today's facial detection systems and sparking worldwide debate about what's coming for the rest of us.

• Home Depot's puzzling reluctance to close a bad hole.
• GNOME's shell extension manager is unhappy with AI.
• How attacks on open source repositories compares in 2025.
• China's researchers have taken aim at the US power grid.
• How bad has the React2Shell vulnerability turned out to be.
• More new React vulnerabilities.
• Apple moves to iOS 26.2.
• Let's Encrypt's crosses into one billion servers managed.
• A DNS Benchmark update.
• Some interesting listener feedback, then...
• How things going with Australia's social media ban and what we are learning

https://www.grc.com/sn/SN-1056-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:

• zapier.com/securitynow
• threatlocker.com/twit
• joindeleteme.com/twit promo code TWIT
• veeam.com
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