Thousands of websites including ones run by the US and UK governments secretly hijacked browsers to mine cryptocurrency thanks to a compromised plugin.
The latest nasty security scourge plaguing the internet is cryptojacking. By running hidden code on a seemingly ordinary webpage, hackers and disreputable webmasters can highjack your CPU's processing power in order to mine cryptocurrency, line their own pockets, and kill your performance. Opera is now the first web browser with a built-in tool to fight off this practice - and hopefully it won't be the last.
It's one thing to wake up and discover that you missed the boat on a cryptocurrency boom that's making a handful of people very wealthy. It's another thing to find out that your computer is making someone else rich while it gives you poor performance and jacks up your electricity bill. With the spread of cryptojacking, that infuriating scenario is happening to more people.