NASA hasn't offered a theory as to what the tiny object might be, but they are squashing speculation that their technicians intentionally shut down the feed. Tabatha Thompson, a spokesperson for NASA, wrote to Valuewalk.com, "The station regularly passes out of range of the Tacking and Relay Data Satellites (TDRS) used to send and receive video, voice, and telemetry from the station. For video, whenever we lose signal (video comes down on our higher bandwidth, called KU) the cameras will show a blue screen (indicating no signal) or a preset video slate, depending on where you are watching the feed."
NASA told the Mail Online that, "Reflections from station windows, the spacecraft structure itself or lights from Earth commonly appear as artefacts in photos and videos from the orbiting laboratory." Classic weather balloon stuff there.
It's probably a bit of a stretch to assume that this UFO is the kind of UFO featured in Independence Day and not just some meteor or satellite. But whatever, dream on UFO hunters.