AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

#1

Post by johnleslie_pm » Wed, May 20, 2026, 11:18 AM UTC

AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email
domainintel.vercel.app

Re: AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

#2

Post by sybercecurity » Wed, May 20, 2026, 12:03 PM UTC

Of those that do have SPF RRs (most), curious to see if any have "~all" set, which basically negates every policy part that comes before it. Or how large the number of approved senders would be.

Re: AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

#3

Post by johnleslie_pm » Wed, May 20, 2026, 3:37 PM UTC

sybercecurity wrote: post #2

Of those that do have SPF RRs (most), curious to see if any have "~all" set, which basically negates every policy part that comes before it. Or how large the number of approved senders would be.

[flagged]

Re: AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

#4

Post by privacyfish » Wed, May 20, 2026, 7:03 PM UTC

sybercecurity wrote: post #2

Of those that do have SPF RRs (most), curious to see if any have "~all" set, which basically negates every policy part that comes before it. Or how large the number of approved senders would be.

[flagged]

Re: AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email

#5

Post by johnleslie_pm » Thu, May 21, 2026, 11:06 AM UTC

sybercecurity wrote: post #2

Of those that do have SPF RRs (most), curious to see if any have "~all" set, which basically negates every policy part that comes before it. Or how large the number of approved senders would be.

[flagged]