logo
mobileLogo
  • Latest
  • News
    • Firefox 100

      Firefox version 100 is out

    • Twitter

      Twitter accepts Elon Musk's buy offer

    • twitter

      Elon Musk's offer to buy Twitter

    • aws

      AWS EC2 instances now with auto-recovery service

  • Articles
    • Unable to save as SVG in Inkscape on Ubuntu Linux

    • Internet Globe

      What is an unvalidated redirect?

    • macOS tools

      7 macOS built-in tools for handling everyday tasks

    • top in ec2 console

      AWS EC2 instances finally receive an easy remote console

  • Tutorials
    • Debian

      APT /etc/apt/sources.list for every Debian release

    • MS Teams on Linux with Background Settings

      How to use background settings in Microsoft Teams on Linux Desktop

    • Chrome for Linux

      How to install Google Chrome from APT repository

    • Onyx to fix mac Mail index

      How to fix continuous "moving e-mails" in Mac Mail with Onyx (Freeware)

  • Crypto
    • Cardano K framework

      Cardano Smart Contracts and why it’s a big thing

    • Yoroi rewards

      How to send $ADA to a hardware wallet and stake (mine) ADA / Cardano?

  • Events

Security

Internet Globe
Security

What is an unvalidated redirect?

If you're working with security audits and vulnerability scanners, you might come across the term ...
By Claudio Kuenzler
February 17, 2022
TLS certificate chain
Security

How to create and troubleshoot OpenSSL SSL/TLS certificates

Working with SSL/TLS certificates? Need to verify a certificate chain? Need to create a private ...
By Claudio Kuenzler
November 26, 2021
Facebook data leak
Security

Data from 500 million Facebook users leaked and shared for public download

A massive data leak from Facebook was collected and shared online, which includes data from ...
By Claudio Kuenzler
April 7, 2021
How DNSBL works
Security

What is a DNSBL (DNS Black List) and how do they work against spams?

A DNSBL, also known as DNS Black Lists or DNS Block Lists or RBL (Real-time ...
By Claudio Kuenzler
February 4, 2021
Wordpress stats
Security

How to protect your WordPress site from brute force login attacks

Every WordPress administrator looking at site statistics becomes quickly aware that one of the most ...
By Claudio Kuenzler
February 2, 2021
Windows
Security

How to kill your Windows machine in one second (critical NTFS vulnerability)

There is a critical vulnerability in Windows which will destroy the NTFS file system when ...
By Michael Aigner
January 16, 2021
Let's Encrypt Logo
Security

Certbot unable to issue certificate, instead asks for 'Please choose an account'

When trying to add a new Let's Encrypt TLS certificate, certbot failed with the following ...
By Claudio Kuenzler
January 6, 2021

Categories

  • bg-0
    News
  • bg-0
    Tutorials
  • bg-0
    Crypto
logo
  • About us
  • Contact us
  • Privacy Policy

logo

✕
  • Latest
  • News
  • Articles
  • Tutorials
  • Crypto
  • Events

Latest Posts

Unable to save as SVG in Inkscape on Ubuntu Linux

Firefox version 100 is out

Twitter accepts Elon Musk's buy offer

Elon Musk's offer to buy Twitter

AWS EC2 instances now with auto-recovery service