KamberEdelson, a law firm created by the recent merger of two small law firms — one in Chicago and the other in New York — aims to become the go-to firm for plaintiffs seeking to combat illegal infringements on their computer and cell phone and on their Internet use.

The law firm is carving out a niche in representing consumers who say their rights are being abridged by unwanted text messages on cell phones and undisclosed online meddling with their computers, among other things, in a kind of “digital trespassing,” said Scott Kamber, the firm’s lead attorney in New York.