IB might have got spoofed. Was SSL disabled by hackers. Your passwords may have been comprised. Do you check IB's IP address everyday? What your IB's IP addresses do you got? Check this IB IB or IB IPs tracker CANNOT LOG IN TODAY MEANS SOMETHINGS GOING ON!
On IB's system check page: 08:36 EST Some customers may experience connectivity issues while using SSL. If you experience this please uncheck the box and try again. We are aware of the issue and are investigating. All other IB systems are functioning normally. What the F does this mean? IB has been hacked?