Safety
security in the network
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Skiff Mail: Anonymous emails plus free identities for registrations
Unlimited email addresses, open source apps and more: Skiff offers a surprising number of extras for an email service. We'll show you what it's all about.
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WhatsApp: block chats and protect them with biometrics
You want to prevent others from seeing your chats in WhatsApp? No problem! We'll show you how to block access.
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Encrypt files in the browser: Fast, easy and free
Encrypt files without having to install a program? And then standards-compliant and open source? Yep, that works!
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Calculate file hashes on Windows, macOS and Linux
File hashes tell you what's really in a file. We'll show you how to calculate it and what you need to know.
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Extended data protection for iCloud: How to activate end-to-end encryption
Apple now allows you to encrypt all iCloud data and keep the keys yourself. We show what you have to consider.
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iOS 16 Passkeys: This is how you can test the login without a password
With Passkeys, insecure passwords should be a thing of the past. You can easily test passwordless login on an iPhone with iOS 16.
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Instructions: Change Netflix password
Have you passed on your Netflix access data or are you concerned that it has been stolen? No problem: It's that easy to change your Netflix password.
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Google Chrome: View, check and delete saved passwords
If you save your passwords in your browser, you should check them from time to time. We'll show you how it works in Google Chrome.
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Instructions: Set up folder backup on NAS with Synology Drive
Are you using a Synology NAS? Then you can easily set up backups of your important data and folders. We show you how to do it.
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Google: Run security checks on your accounts
Are you using a Google account? Then you should definitely check whether it is also adequately secured. An assistant will help!
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Instructions: Set up 2-factor authentication via app
Two-factor authentication ensures online security - but how does it work? We will show you how to efficiently secure your accounts.
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2-factor authentication: With this database you secure your online accounts
Secure your online accounts with two-factor authentication. But where does that go and how do you find the necessary information? A database helps.
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Synology: Disable admin account and increase security
The admin account on your Synology NAS can be a security risk. We'll tell you why this is the case and how to turn it off.
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Alternative DNS: Increase security, circumvent censorship on the Internet
With an anonymous and uncensored DNS, you can surf more securely and anonymously and bypass censorship. The DNS of a specific provider is ideal for this.
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Delete Kaspersky Antivirus – on PC and Mac
According to the BSI, the virus scanner Kaspersky Antivirus currently poses a security risk. We will show you how you can delete the antivirus software from your PC and Mac.
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Ukraine war: bring information to Russia
The Russian invasion of Ukraine is a terrible thing. At the same time, the Russian government is massively censoring the Internet. But there are ways and means of getting information to Russia –…
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Instructions: Creating a backup made easy
Backups are an annoying topic. Losing data is even worse. So you should take care of that. We show how you can easily ensure security.
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Apple Private Relay: Better than VPN?
Is the Apple Private Relay sufficient as a VPN replacement? Or is it better to rely on a VPN for anonymization on the Internet?
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Mac, iPhone & iPad: Hide email address when signing in
In iOS or iPadOS 15 and macOS 12 Monterey you can create temporary email addresses with just a few clicks to hide your real email.
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iOS 15: Hide IP address in Safari
With Private Relay you can disguise your IP address under iOS 15. Here we will tell you how it works and what you have to consider.
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Instructions: Use Raspberry Pi as a VPN router
If you don't have a router that protects your entire network via VPN, you can easily set up and interpose a VPN router with a Raspberry Pi.
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Send encrypted emails - immediately, without setup!
You can also send encrypted emails using the PGP standard without having to install your own PGP - immediately and without registering.
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Unwanted download and network errors on Windows? Here's the solution!
If Chrome and Edge refuse to download files, it's Windows - we'll show you how to fix the problem.
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Instructions: Set up FritzBox parental controls
Protect kids online? With the FritzBox child safety device, many people already have the tools they need at home. However, there is a small catch.
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Activate DNS over TLS in the FritzBox and surf more securely
With an encrypted DNS, you can not only speed up your surfing experience, but also make it more secure. Only a few hand movements are necessary for this.
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iPhone privacy: Apps only reveal approximate location
From iOS 14 you can prohibit apps from determining your exact location. You can find out here what it is all about and what you get out of it.
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Synology NAS: Add custom repositories
You can install software on a Synology NAS from many more sources than specified by the manufacturer. We show you how to do it.
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Windows 10: Turn off camera and microphone in video conferences with a click
Do you feel like you're being watched by the webcam? If you have to dive into the video conference for a moment, we have the right solution for you!
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Android: Share WiFi and show WiFi password
Modern smartphones save the passwords for WLAN access in a secure area - so you don't usually have to remember them. But what if you enter the password yourself...
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Instructions: Remotely Erase and Unlock iPhone, iPad or Mac
You want to reset a sold iPhone, iPad or Mac afterwards? That's no problem: we'll show you how to do it.
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iPhone with iOS 14: This is what the green and orange dots on the display mean
Under iOS 14, green or orange dots appear on the display when using an app. This is a new privacy protection feature.
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Caution: Norton VPN only protects with IPv6 disablement
Norton delivers VPN in the security suites - great! It obfuscates the IPv4 address - great. And not the IPv6 - less great. And not a word about it - just lousy.
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Open source backup for Windows - second attempt: 7-Zip
7-Zip is best known as a packing program, but it can also create full backups - fast, reliable and safe. But not without a salad of letters ;)
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Synology NAS: Securely erase disks and restore factory settings
In order to securely erase the hard drives in a Synology NAS, some precautions are necessary. We'll show you how it works.
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Windows 10: Scan files and folders for viruses
Microsoft Defender now reliably protects Windows 10 against viruses. You can also check files and folders manually.
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Automatically clear Google data
Automatically deleting Google data is not a problem, but you have to know how to do it. We'll show you.
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Instructions: Delete Adobe Flash (Mac & Windows)
Adobe has declared the insecure, slow Flash player dead. We'll show you how to remove Flash from your system.
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Yubikey in practice: securing Facebook and Twitter with FIDO2 sticks
Security keys like the Yubikey are THE alternative to the classic password. We'll show you how it works in practice.
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Fix camera and microphone issues in video chats
Do you have problems with video conferencing in your home office or with friends? Usually it's the camera and microphone - we show how the video chat works.
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Coronavirus: Important links to first-hand information
In times of the corona virus, you should check carefully where you get your information from. We have bundled the most important resources.
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Instructions: Delete Apple ID and Apple account
Want to delete an unused Apple account? Apple now provides a way to directly delete the Apple ID. We show how you can delete your Apple account.
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LuLu: Free MacOS firewall for outgoing connections
The MacOS firewall is too weak and Little Snitch too expensive? With LuLu you have a free connection firewall for MacOS at hand that protects you from notorious home phone users.
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Use SSH without passwords (Ubuntu)
With SSH you don't need any passwords: you automatically authenticate yourself in the background using a pair of keys - in two simple steps.
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Using SSH on Ubuntu
The classic SSH is still the first choice for long-distance connections: secure, flexible, available almost everywhere and super easy to use. That's how it works:
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Securely delete files
Confidential data should be deleted in such a way that nobody can restore it - the "recycle bin" alone is not enough! But certainly erasers.
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Caution with PIN-SAFE: Expensive and with pitfalls
PIN-SAFE promises a lot, currently constantly via TV advertising: passwords safe and offline! Stop the chaos! Not entirely wrong, but still: Don't buy it.
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How to securely hide data - and how not
How secure is a program like Wise Folder Hider that hides folders by password? The short version: OK against eyes, not against mini hackers.
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Instructions: Bypass Gatekeeper on Mac
Gatekeeper on Mac is becoming more and more restrictive. Nevertheless, your programs can easily bypass the security function of MacOS.
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Instructions: Set up parental controls on the Amazon Fire TV
Amazon allows parental controls to be set up on its Fire TV platform. We show what this does and how you simply activate it.
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Darknet: Four search engines in comparison
A Google search for the Darknet is still a long way off - until then we will show you four alternatives. And two of them are really good!
