Cyber security in a company today is more than one antivirus on a computer; sometimes it seems obvious, but in practice it is a series of decisions and settings that protect the entire IT infrastructure from real attacks. In this category, we'll show you how to secure your company step by step - from setting up next-generation firewalls and intrusion detection systems (IDS/IPS), to implementing SIEM class solutions, to EDR and XDR platforms; however, it's worth remembering that tools alone without clear procedures and training won't do much. We pay a lot of attention to the security of web and e-commerce applications: practical instructions cover SSL/TLS, WAF configuration and API protection (e.g., request limiting, token validation, key rotation). We don't leave out backup and disaster recovery - we describe how to design backups (full and incremental) and recovery procedures that really work after an incident. We also touch on the topics of IAM, multi-factor authentication (MFA) and network segmentation; you'll find specific tool recommendations, on-premise vs. cloud comparisons, and implementation instructions tailored to SME budgets. It may seem like a lot, but it's better to have a plan than to improvise after an attack.