I don't think that anyone "hired" a PI firm. Here's what I suspect happened....
1. On August 25, 2023, the Big Ten announced that it had hired U.S. Integrity (USI) "to enhance monitoring efforts and provide additional educational resources to help prevent student-athletes, coaches, and staff from engaging in prohibited sports wagering.... USI will provide integrity monitoring, educational, and social media monitoring services to the Big Ten Conference via its proprietary dashboard. USI conducts analysis across dozens of data sets to proactively identify irregular contest-level, officiating and wagering patterns." This was no secret – the Big Ten issued a press release announcing the hire.
2. With the increasing legalization and prevalence of sports wagering, USI was probably hired as a precautionary measure to prevent any game fixing shenanigans. I doubt that the Big Ten had any inkling of the scUM Sig Stealing Scandal when it hired USI.
The following is speculation....
3. A representative from USI held an introductory meeting with the coaching staffs of each Big Ten program – "If you notice any suspicious activity, please give us a call." The idea was for USI and the teams to work together to prevent "cheating".
4. Sometime in September or October of 2023, a member of the scUM coaching staff, for whatever reason – personal integrity, axe to grind, doesn't really matter – contacts USI and eventually turns over evidence of the Sign Stealing Scandal. And he turns over LOTS of evidence.
5. On October 17, 2023, less than two months after the Big Ten hired USI, an "outside investigative firm" notifies the NCAA of a potential prohibited sign-stealing scheme conducted by members of the Michigan football staff. The scheme allegedly involves Connor Stalions (and persons hired by him) attending opponents' games and filming their signs from coaches to players.
6. I have to believe that this "outside investigative firm" was USI. The timing of the notification to the NCAA, as well as the inside access to the scUM program, point directly to USI. EDIT: This scenario also helps to explain the alleged "gambling" aspect of the scandal.
Any thoughts
@Premierdrum ?