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.

Walmart-Amazon Rivalry Turns Into Food Fight

Walmart on Wednesday said it would expand its Online Grocery Delivery service, currently available in six markets, to more than 100 metro areas across the United States. Its plans call for covering more than 40 percent of U.S. households by the end of the year.