TechWithAmardeep

What is a VPN? How It Works, Types, When You Need One & Limitations (Complete 2026 Guide) What is a VPN? How It Works, Types, When You Actually Need One & What It Cannot Protect You From (Complete 2026 Guide) By Amardeep Maroli  |  April 16, 2026  |  VPN, Privacy, Network Security  |  14 min read Home About Contact The Colonial Pipeline ransomware attack that shut down 45% of the US East Coast's fuel supply started with a single compromised VPN password — on a VPN account with no multi-factor authentication enabled. The attackers did not need to bypass any firewall. They did not exploit a zero-day vulnerability. They logged in through the front door, using a password almost certainly obtained from a dark web credential market. That attack illustrates something important about VPNs that most guides miss entirely: a VPN is both a critical security tool and a significant ...

What is a Firewall? Types, How It Works & Why You Need One (Complete 2026 Guide) What is a Firewall? Types, How It Works & Why You Need One (Complete 2026 Guide) By Amardeep Maroli  |  April 15, 2026  |  Firewall, Network Security, Cybersecurity Basics  |  14 min read Home About Contact Every day, your home router silently blocks thousands of connection attempts. Port scanners probing for open services. Bots checking whether your device is running a vulnerable version of a protocol. Automated scripts testing default credentials. You never see this activity — your firewall handles it before any of it reaches your devices. At the enterprise level, next-generation firewalls process billions of packets per day, applying hundreds of rules in microseconds, blocking exploit attempts, identifying malware command-and-control traffic, and enforcing policies about which applicati...

What is a DDoS Attack? How It Works, Types, Real Examples & How to Defend Against It (2026 Guide) What is a DDoS Attack? How It Works, All Types, Real Examples & How to Defend Against It (Complete 2026 Guide) By Amardeep Maroli  |  April 14, 2026  |  DDoS, Network Security, Cyber Attacks  |  14 min read Home About Contact On February 5, 2025, Cloudflare's network absorbed the largest DDoS attack ever recorded — a 31.4 terabits-per-second flood of traffic that lasted just 35 seconds. To put that number in context: if you tried to download that much data on a home internet connection at 100 Mbps, it would take 35 years. Cloudflare's automated systems detected, analysed, and mitigated it before a human engineer had time to respond. That single attack was 726% larger than the previous world record. And it was one of 47.1 million DDoS attacks that hit the global internet in ...