According to Reuters, two former Twitter employees revealed that as of the beginning of this year, more than 1,000 employees and contractors can use internal tools to change user account settings and provide control to others. This makes it more difficult to prevent the large-scale hacking attacks last week. Twitter and the FBI are investigating this hacking incident. Twitter declined to comment on this number, nor would it disclose whether the specific number had dropped before the hacking incident. However, the company said it is looking for a new security director, hoping to strengthen system security and train employees to guard against external attacks.