Security researchers have reported spikes in mass SQL injection attacks of late. These attacks take advantage of common vulnerabilities in the way that Web applications interact with back-end databases. Black hat attacks have been linked to black hat efforts to redirect victims to exploit kits like Blackhole or Phoenix. The attacks are automated, quick-and-dirty attacks that drop malicious code onto the website. There are a growing number of professional hackers and crime groups that specialize in quick and rapid identification of websites that are vulnerable to SQL injection.”]
Source: https://www.darkreading.com/database-security/mass-sql-injections-spike-again