Device Privacy
Bluetooth privacy can change a device address without changing the device
Bluetooth LE can rotate private addresses while trusted devices still recognise each other. Learn what that protects and why it is not complete anonymity.
ACCOUNTS · DEVICES · PRIVACY
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Account Security
Before a security-key firmware update, check how recovery will work
Security-key updates depend on the exact model and firmware process. Check the manufacturer’s instructions, recovery options and reset behaviour before starting.
Software and Security
OCSP stapling: why certificate status can arrive with the TLS handshake
OCSP stapling lets a server carry a signed certificate-status response. Understand what the response adds and why it does not replace certificate validation.
Everyday Digital Security
A wildcard certificate covers less of a domain tree than it seems
A wildcard TLS certificate matches one level of subdomain. See concrete examples and check the certificate names before changing your website setup.
Software and Security
DNS CAA records: choosing who may issue your certificates
CAA records control which certificate authorities may issue for a domain. Check the live issuer and renewal path before changing the policy.
Digital Habits
What a certificate transparency log can reveal about a website
Certificate transparency records certificate issuance publicly. Learn what a log can show and why it is not proof of a website’s safety.