Provide some level of detail on how they looked for evidence. "We have no evidence" could mean "we didn't bother looking for evidence", or "we looked extensivel

Provide some level of detail on how they looked for evidence. "We have no evidence" could mean "we didn't bother looking for evidence", or "we looked extensively for evidence, but didn't find any." In fact, the company has an incentive not to keep logs or collect evidence specifically so they can truthfully claim they don't have any evidence of a breach