A new Federal Trade Commission lawsuit is serving as an unsettling reminder to companies that it hasn’t backed off its war against deceptive website practice—what the agency dubs “dark patterns” marketing.

The FTC in late April sued Doxo.com, accusing the Bellevue, Washington-based online bill paying company of duping consumers into believing they were making payments through their biller’s websites when in fact they were using Doxo’s portal and paying it fees.