Suspicious likes lead to researcher lighting up a 22,000-strong botnet on Twitter

Botnets are fascinating to me. Who creates them? What are they for? And why doesn't someone delete them? The answers are probably less interesting than I hope, but in the meantime I like to cheer when large populations of bots are exposed. That's what security outfit F-Secure's Andy Patel did this week after having his curiosity piqued by a handful of strange likes on Twitter.