PUBLIC OBSERVATION · V1Fri, Aug 21, 2026 1:04 PM

Link Behavior Trace

https://martin.kleppmann.com/2007/07/19/yes-no-cancel-causes-aspirin-sales-to-soar.html

Observed result Suspicious signals observed 100% observation completeness

Trace another link

SIGNATURE COMPONENT

LINK BEHAVIOR TRACE

0 transition(s)

Final

martin.kleppmann.com https://martin.kleppmann.com/2007/07/19/yes-no-cancel-causes-aspirin-sales-to-soar.html

Observed signals

1 recorded

Embedded frame observed from a different domain

Observed page structure

LOW

Landing behavior

Observed response

HTTP status200

Content typetext/html

Forms0

Password inputs0

External domains19

Binary responseNo

Security header configuration

Poor

Recommended headers observed0 / 6

Not observed

strict-transport-securitycontent-security-policyx-frame-optionsx-content-type-optionsreferrer-policypermissions-policy

Configuration, not a security guarantee. This describes which response headers were observed, not whether the site is otherwise secure — a "strong" grade means these specific headers were present, nothing more.