The Israeli marketing security firm CHEQ says that at least 15% of Chinese Twitter accounts are likely to be bots. CHEQ’s security platform identifies and filters out invalid traffic (such as bots) visiting the websites of its marketer customers. So it can see, and study, bots and other fake accounts that follow ads and organic links out of Twitter to its customers’ websites. Over the past month, it studied 879,000 such visits and detected what website the bots were coming from, as well as the country in which the bot account was created. The analysis showed that 7.5% of all...