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Latest practical guides

Set Up UFW on an Ubuntu VPS Without Locking Yourself Out

Allow SSH first, open only ports 80 and 443, then enable UFW with your session still open. A safe, tested order plus an escape plan if SSH stops working.

October 30, 202617 min read

A browser dashboard shows a cookie, consent toggle, script connections, checklist and privacy shield for a UK website cookie audit.

Regional guides

UK Cookie Rules: Audit Your WordPress Site Against ICO Guidance

A step-by-step cookie audit for UK WordPress sites: list every cookie and script, check the five PECR exceptions, and decide keep, consent or remove.

October 29, 202618 min read

An email passes through a DNS policy record into a verified shield, illustrating a DMARC record audit.

DNS & security

Is Your DMARC Record Out of Date? What RFC 9989 Changed

RFC 9989 replaced the old DMARC rules in May 2026. Learn how to audit your record, swap pct for the new t tag, add np, and check report authorisation.

October 29, 202618 min read

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