Security
Straightforward advice on passwords, authentication, and safer everyday habits online.
How to unlock a PDF for printing, copying and editing
A statement opens but will not print, or you cannot copy a line from a contract. Learn about the two types of PDF protection, how to remove them and what to do without the password.
How to set up SPF, DKIM and DMARC records (2026 guide)
A practical guide to SPF, DKIM and DMARC: what each record does, how to add it to DNS, what correct syntax looks like, and how to verify that it works.
How to create a secure Wi-Fi password
A secure Wi-Fi password should be long, unique, and hard to guess. See practical recommendations for home networks, offices, cafés, and guest Wi-Fi.
My password leaked: what to do step by step
Found your password in a data breach or suspect someone accessed your account? Here is what to secure first, which accounts to prioritize, and what to check.
