Learning

The Problem SEG Solves Nowadays, email is one of the most targeted places for scammers and hackers to find their victims. Statistics from Cisco state that 85% of email is spam, containing various malicious content like malware, phishing, ransomware, etc. That is why email security is very crucial and vital in the enterprise email environment. Cisco Secure Email Gateway (SEG), previously known as Cisco Email Security Appliance (ESA), is an appliance designed as a front-line defense for enterprise email infrastructure. ...

Introduction: The Magic of Instant Communication These days, sending an email feels almost effortless. We sign up for an account with Gmail, ProtonMail or another provider type out a message, hit “Send” and within seconds it lands in someone else’s inbox. But what actually happens after you click “Send” is much more complex. There’s an entire system working behind the scenes to move your message across servers, networks, and protocols before it reaches its destination. Email doesn’t travel the same way as regular web traffic and understanding how it works can be pretty fascinating. ...