Twitter Inc. has notified some users that their accounts may have been hacked by state-sponsored actors, as the company works to investigate the attack.

Uber is asking its U.S. drivers to sign a re-worded contract that restricts their right to sue in an escalation of a battle over whether they should be treated as employees.

As drone registration increases, observers predict that some states will require recreational drone operators to carry insurance coverage, much like mandatory insurance for motorists.

Though the policy is targeted at worried parents, adults who suffer harassment online will also be covered.