Doyle Security Systems Inc., ranked No. 20 on the 2025 SDM 100, acquired Complete Security Inc. based in Buffalo, N.Y. Complete Security has provided security services to thousands of commercial and residential clients in the Buffalo community since 1991. The acquisition enhances Doyle’s already strong customer base in the Buffalo area. 

Mike Iannello, owner of Complete Security since 1991, will bring his vast industry experience and security expertise to the Doyle Security team as a sales consultant at the Buffalo branch. 

Doyle Security President and CEO, Jack Doyle, said, “Doyle has been a monitoring partner for Complete Security for many years, which gives us a great deal of familiarity with Complete Security’s customers and allows for a seamless transition as we welcome them to the Doyle Security family.” 

Mike Iannello said about the merger, “Complete and Doyle share similar values and business philosophies, and I am confident that Complete customers will be thrilled with the level of professionalism and customer service that Doyle provides.”