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.
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Digital Habits
Punycode explains why an international domain can appear with an xn-- prefix
An xn-- label can be the ASCII form of an internationalised domain name. Understand the encoding without treating it as either a danger sign or a safety guarantee.
Everyday Device Security
A USB data blocker is a specific connection tool, not a universal charging guarantee
A USB data blocker limits a particular connection. Check its connector and charging capabilities without treating the label as a complete security guarantee.
Practical Computing
A recovery key deserves a different home from the encrypted laptop
Find out where your BitLocker recovery key is stored before a recovery screen appears, and distinguish the key itself from the identifying number.
Digital Housekeeping
Why deleting a file is different on an SSD
Deleting a file, SSD garbage collection and sanitising a drive are different processes. Understand the distinction before selling or retiring a computer.
Everyday Digital Security
DNSSEC checks DNS authenticity without hiding the query
DNSSEC checks the authenticity and integrity of signed DNS data. Learn why that protection differs from encrypting DNS traffic or securing a website connection.