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Good to know: everyday tech literacy

Did you know the first computer program was written in the 1840s by Ada Lovelace — almost a century before modern computers existed? Tech history is full of surprises like that. Here is a quick tour of ideas that make digital life safer.

Free and open-source software

FOSS publishes its recipe — the source code — so anyone can inspect, fix and share it. Open code is audited by experts worldwide and powers much of the internet, from servers to whole operating systems.

Updates matter most

The operating system runs everything else on your device. Keeping it updated is the top security habit, since most attacks exploit flaws vendors already fixed. Switch on automatic updates and restart when asked.

Passwords and second factors

Use a long, unique password everywhere — a password manager remembers them so you memorise just one. Add a second factor, like an app code, wherever offered.

Backups: the 3-2-1 habit

Keep three copies of anything precious, on two kinds of storage, one elsewhere. And test a restore — a backup you cannot restore is not a backup.

OSINT basics

OSINT means learning from public information: maps, archives and posts. Cross-check surprising claims against several sources, verify dates before sharing — and remember your own posts leave a trail too.

Spotting scams

Most attacks target people, not computers. Treat urgent messages about locked accounts with suspicion, check sender addresses, and never share passwords or codes.