David Vladeck, a former director of the FTC's Bureau of Consumer Protection, said there would likely be another investigation, and potentially another enforcement action before Twitter executives would be held personally liable.
Many former FTC officials said the agency's current chair, Lina Khan, has shown interest in going after executives if consent orders are violated.
The FTC on Thursday said it is "tracking recent developments at Twitter with deep concern.
It is Twitter itself (not individual employees) who is a party and therefore only Twitter the company could be liable," he wrote.
In the May settlement, Twitter agreed to pay $150 million and assess potential features for data privacy and security issues.