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Nmap (Network Mapper) is the standard open-source tool for discovering hosts and services on a network and checking for security weaknesses. It runs well on Windows with a full GUI. This guide covers installing it, the commands you’ll actually use, common fixes — and the one legal rule you must not skip.

Reviewed and kept current by the Coppers.io editorial team — see how we research .

⚠️ Scan only what you’re allowed to

Before anything else: only scan networks and systems you own or have explicit written permission to test. Unauthorised scanning can violate laws like the US Computer Fraud and Abuse Act and your ISP’s terms, and can disrupt networks. Use Nmap on your own lab, your home network, or an authorised engagement — never on systems you don’t control.

WordPress powers a huge share of the web, which also makes it a favourite target for automated attacks. The good news: nearly all WordPress hacks exploit the same few weaknesses — outdated plugins, weak logins, and missing hardening — and all are preventable. Here’s how to lock your site down.

Reviewed and kept current by the Coppers.io editorial team — see how we research . For non-WordPress sites, start with our broader website security guide.

Website security is the set of measures that protect your site — and your visitors’ data — from attacks like malware, data breaches, and downtime. Whether you run a personal blog or an online store, a few core practices stop the overwhelming majority of threats. Here’s what to defend against and how.

Reviewed and kept current by the Coppers.io editorial team — see how we research .

Why website security matters

A compromised site can leak customer data, get defaced or filled with spam, spread malware to visitors, vanish from search results, and cost you trust and revenue. And “too small to be a target” is a myth: most attacks are automated bots scanning the entire web for known weaknesses — they don’t care how popular you are. Security isn’t a one-time setup; it’s ongoing maintenance.

Most VPN problems come down to a handful of causes — a busy server, the wrong protocol, a firewall, or an out-of-date app — and most have quick fixes. This guide walks through the common issues in order, from “won’t connect” to “keeps dropping,” with the steps that actually solve them.

Reviewed and kept current by the Coppers.io editorial team — see how we research .

Start here: the 30-second checklist

Before anything else, these resolve a surprising share of VPN issues: