October 28, 2025

Security Now 1049: DNS Cache Poisoning Returns

Listen Later

2 hours 55 minutes

Just when you thought DNS cache poisoning was a thing of the past, Steve and Leo reveal why this 17-year-old bug is making a dramatic comeback—and why most DNS resolvers still can't manage high-quality random numbers after all this time.

The unsuspected sucking power of a Linux-based robot vacuum.

Russia to follow China's vulnerability reporting laws.

A pair of Scattered Spider UK teen hackers arrested.

Facebook,Instagram and TikTok violating the EU's DSA.

Microsoft Teams bringing user WiFi tracking bypolicy.

You backed up. That's great. Did you test that backup?

Coveware reports all-time lowransomware payment rate.

Ransomware negotiator reports how the bad guys get in.

Lots of listener thoughts and feedback about NIST passwords.

And against all reason and begging credulity, it seems we still haven't managed to put high-quality random number generators into our DNS resolvers.

Show Notes - https://www.grc.com/sn/SN-1049-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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Sponsors:

hoxhunt.com/securitynow

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1password.com/securitynow

veeam.com

zscaler.com/security

...more

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By TWiT

4.3

200200 ratings

October 28, 2025

Security Now 1049: DNS Cache Poisoning Returns

Listen Later

2 hours 55 minutes

Just when you thought DNS cache poisoning was a thing of the past, Steve and Leo reveal why this 17-year-old bug is making a dramatic comeback—and why most DNS resolvers still can't manage high-quality random numbers after all this time.

The unsuspected sucking power of a Linux-based robot vacuum.

Russia to follow China's vulnerability reporting laws.

A pair of Scattered Spider UK teen hackers arrested.

Facebook,Instagram and TikTok violating the EU's DSA.

Microsoft Teams bringing user WiFi tracking bypolicy.

You backed up. That's great. Did you test that backup?

Coveware reports all-time lowransomware payment rate.

Ransomware negotiator reports how the bad guys get in.

Lots of listener thoughts and feedback about NIST passwords.

And against all reason and begging credulity, it seems we still haven't managed to put high-quality random number generators into our DNS resolvers.

Show Notes - https://www.grc.com/sn/SN-1049-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:

hoxhunt.com/securitynow

zapier.com/securitynow

1password.com/securitynow

veeam.com

zscaler.com/security

...more