The Ghost of Rose Mary Woods did it!
"The (DHS) notified us that many U.S. Secret Service...text messages from January 5 and 6 2021 were erased as part of a device replacement program," (DHS Inspector General) Cuffari wrote. "The USSS erased those messages after (the inspector general) requested records of electronic communications from USSS, as part of our evaluation of events at the Capitol on January 6."