SN 942: Encrypting ClientHello - EXIM eMail Servers Exposed, Windows 11 Passkeys, Bing Chat Malware Risk - a podcast by TWiT

• Exim email server ignored ZDI's responsible disclosure of critical remote code execution flaws for over a year, putting millions of servers at risk.


• Malicious ads are appearing in Bing Chat responses, promoting fake sites distributing malware.


• Windows 11 now natively supports passkeys, though browser support may make this redundant.


• Researchers exploit WiFi beamforming side-channel to potentially reveal keystrokes, but practicality is limited.


• The ECH TLS extension encrypts the ClientHello packet to hide SNI data.


• Exim disclosure timeline and impact on millions of vulnerable servers.


• Bing chat ads mimic search result malvertising risks amplified by chatbot trust.

Show notes: https://www.grc.com/sn/SN-942-Notes.pdf

Hosts: Steve Gibson and Leo Laporte

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