// Guides

Guides

Concrete first aid and background knowledge on digital security — structured, discreet, without empty promises.

Account hacked — the first steps

E-mail or online account hacked? The key immediate measures in the right order — calm, structured, without destroying evidence.

AI now writes flawless, personalised phishing messages. Why the old rules no longer suffice — and how to spot fraud anyway.

Data leaks put credentials online. How to check whether you are affected and secure your most important accounts.

After crypto fraud, evidence is decisive. Which data to secure immediately — and what is realistically possible.

Manipulated QR codes lead to fake pages. Where quishing lurks and how to protect yourself — with the current BKA warning.

With a few seconds of audio, AI clones a voice. How the grandparent scam 2.0 works — and how a code word protects you.

WhatsApp or Instagram account taken over? How to get access back and secure it — step by step.

Data encrypted, ransom demanded? The right first steps for small businesses — isolate, document, do not pay.

Strangers ordering in your name, invoices and debt-collection arriving? How to respond in a structured, deadline-aware way.

An e-mail claims to have compromising footage of you and demands a crypto payment? Usually a bluff. How to respond.

Fake online shops take prepayment and deliver nothing. How to spot a fake shop — before you pay.

Unknown charges on your credit card? How to block the card properly and challenge unauthorised transactions.

Suddenly no mobile signal? In SIM swapping, offenders hijack your number and intercept SMS codes. How to respond.

GDPR in the daily life of small businesses: the key basics implemented pragmatically — without bureaucracy overkill.