When in doubt, call the person or company directly to check first – and do so using an official number, never the phone number listed in the email.
Content filtering is a powerful tool that, if properly deployed, can offer parents, companies, and local, state, and federal governments protection by classifying Internet-based content.
When it's set up, the system asks for a login and password just like usual – but then sends a unique numeric code to another device, using text message, email or a specialized app.
Without access to that other device, the login is refused.
The worst affected countries on the continent is Russia, which account for almost 14 per cent of Europe's botnets.
The UK fell just outside Europe's top 10, ranking as the eleventh-highest source of botnet infections. London is the worst affected, with 34.4 percent of all British bots.
Most computers, phones and tablets have a built-in activity monitor that lets users see the device's memory use and network traffic in real time.
You can see which apps are sending and receiving internet data, for example.
Whether it’s computers, smartphones, security cameras or home routers, many consumers are generally unaware their device may have been corralled into a bot master’s control.
Combined, these devices form powerful networks, called botnets, which can be used to wreak havoc online.
This means an attack taking place on computers in the US or Asia could be powered by machines anywhere in the world.